Q64

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Wireless CPU? Q64 Hardware Differences between Q64 and GR64
Reference: WA_DEV_Q64_PTS_002 Revision: 001 Date: November, 2007

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Hardware Differences between Wireless CPU? Q64 and GR64

Document Information
Level 001 Date November, 2007 History of the evolution Creation (Preliminary version)

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Hardware Differences between Wireless CPU? Q64 and GR64

Overview
Q64 Wireless CPU? is powered by WMP100 Wireless Microprocessor? and designed for industrial applications. Q64 is pin to pin compatible to GR64001 with some restrictions. This document aims to list and detail differences between Q64 and GR64001.

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Hardware Differences between Wireless CPU? Q64 and GR64

Contents
1 References.................................................................................. 7

1.1 Reference documents ..............................................................................7 1.1.1 WAVECOM reference documentation ..............................................7 1.2 2 List of abbreviations ................................................................................8 General description................................................................... 10

2.1 General information of Q64 ...................................................................10 2.1.1 Overall dimensions ........................................................................10 2.1.2 GSM/GPRS Features ......................................................................10 2.1.3 Interfaces.......................................................................................10 2.1.4 Operating system ..........................................................................10 2.1.5 Connection Interfaces ....................................................................10 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 4 4.1 4.2 4.3 Electrical Differences................................................................ 11 Pin assignment comparison ..................................................................11 Electrical level differences ......................................................................12 ON/OFF Sequence .................................................................................14 VREF .....................................................................................................14 SIM Interface.........................................................................................15 UART1 multiplex with GPIO ..................................................................16 BUZZER.................................................................................................17 LED .......................................................................................................18 VRTC .....................................................................................................18 USB.......................................................................................................19 PCM Interface........................................................................................20 Antenna Diagnostics .............................................................................20 TX_ON ...................................................................................................21 SERVICE/Programming ..........................................................................21 Mechanical Differences ............................................................ 22 Overall dimensions ................................................................................22 Interface Description .............................................................................23 Physical Dimensions .............................................................................24

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Hardware Differences between Wireless CPU? Q64 and GR64

Table of Figures
Figure 1: Power-ON and Power-OFF sequence between GR64 and Q64 ........ 14 Figure 2: Example of SIM Socket implementation........................................... 15 Figure 3: Example of buzzer implementation in GR64..................................... 17 Figure 4: Example of buzzer implementation in Q64....................................... 17 Figure 5: Example of LED implementation ...................................................... 18 Figure 6: Thickness of GR64001 Wireless CPU? (including shieding can, PCB and the components on the top layer) ................................... 22 Figure 7: Thickness of Q64 Wireless CPU? (including shieding can, PCB and WMP100) .............................................................................. 22 Figure 8: Wireless CPU? Q64 viewed from above............................................ 23 Figure 9: Wireless CPU? Q64 viewed from below ........................................... 23 Figure 10: Dimensions of the Q64 and GR64001 Wireless CPU? .................... 24

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Hardware Differences between Wireless CPU? Q64 and GR64

Cautions
This platform contains a modular transmitter. This device is used for wireless applications. Note that all electronics parts and elements are ESD sensitive. Information provided herein by WAVECOM is accurate and reliable. However no responsibility is assumed for its use and any of such WAVECOM information is herein provided “as is” without any warranty of any kind, whether express or implied. General information about WAVECOM and its range of products is available at the following internet address: http://www.wavecom.com

Trademarks
?, WAVECOM?, WISMO?, Open AT?, Wireless Microprocessor?, Wireless CPU?, and certain other trademarks and logos appearing on this document, are filed or registered trademarks of Wavecom S.A. in France or in other countries. All other company and/or product names mentioned may be filed or registered trademarks of their respective owners.

Copyright
This manual is copyrighted by WAVECOM with all rights reserved. No part of this manual may be reproduced in any form without the prior written permission of WAVECOM. No patent liability is assumed with respect to the use of their respective owners.

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Hardware Differences between Wireless CPU? Q64 and GR64

1 References
1.1 Reference documents
For more details, several documents are referenced in this specification. The WAVECOM documents references herein are provided in the WAVECOM documentation package; the general reference documents which are not WAVECOM owned are not provided in the documentation package. 1.1.1 [1] WAVECOM reference documentation Wireless CPU? Q64 Product Technical Specification and Customer Design Guidelines Reference: WA_DEV_Q64_PTS_001 [2] Wireless Microprocessor? WMP100 Product Technical Specification and Customer Design Guidelines Reference: WM_DEV_WUP_PTS_005 [3] Integrator’s Manual – GR64 GSM/GPRS Wireless CPU? Reference: WI_DEV_ GR64_UGD_001 [4] AT Commands Manual for GR64 & GS64 Wireless CPU? Reference: WI_DEV_Gx64_UGD_001 [5] AT Command Interface Guide for Open AT? Firmware v6.5 Reference: WM_DEV_OAT_UGD_035

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Hardware Differences between Wireless CPU? Q64 and GR64

1.2 List of abbreviations
Abbreviation Definition ADC AT AUX CLK CTS DAC dB DC DCS DSR DTR EMI GND GPIO GPRS GSM I/O LED MAX MIC MIN RF RFI RI RST RTC RTS RX SCL SDA SIM SPI SPL Analog to Digital Converter ATtention (prefix for modem commands) AUXiliary CLocK Clear To Send Digital to Analogue Converter Decibel Direct Current Digital Cellular System Data Set Ready Data Terminal Ready ElectroMagnetic Interference GrouND General Purpose Input Output General Packet Radio Service Global System for Mobile communications Input / Output Light Emitting Diode MAXimum MICrophone MINimum Radio Frequency Radio Frequency Interference Ring Indicator ReSeT Real Time Clock Request To Send Receive Serial CLock Serial DAta Subscriber Identification Module Serial Peripheral Interface Sound Pressure Level
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Hardware Differences between Wireless CPU? Q64 and GR64 Abbreviation Definition SPK TP TVS TX TYP UART USB SPeaKer Test Point Transient Voltage Suppressor Transmit TYPical Universal Asynchronous Receiver-Transmitter Universal Serial Bus

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Hardware Differences between Wireless CPU? Q64 and GR64

2 General description
2.1 General information of Q64
The Q64 is a self-contained E-GSM/GPRS 900/1800 and 850/1900 quad-band Wireless CPU?, including the characteristics listed in the subsection below. 2.1.1 ? ? ? ? 2.1.2 ? ? ? 2.1.3 ? ? ? ? ? ? ? ? ? ? ? 2.1.4 ? ? ? 2.1.5 ? Overall dimensions Length: 50 mm Width: 33 mm Thickness: 6.8 mm Weight: 11.6 g GSM/GPRS Features 2 Watts EGSM 900/GSM 850 radio section running under 3.6 Volts 1 Watt GSM1800/1900 radio section running under 3.6 Volts Hardware GPRS class 10 capable Interfaces Digital section running under 2.8 Volts 3V/1V8 SIM interface Power supply Serial links (UART) Analogue audio ADC PCM digital audio USB 2.0 slave I2C Serial buses PWM (BUZZER) GPIOs Operating system Real Time Clock with calendar Echo Cancellation + noise reduction (quadri codec) Full GSM or GSM/GPRS Operating System stack Connection Interfaces

The Q64 Wireless CPU? has two external connections: One for RF circuit: o MMCX connector ? One for baseband signals: o 60-pin I/O connector Remark: Comparing with GR64, the antenna soldered connection in Q64 is not available.
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Hardware Differences between Wireless CPU? Q64 and GR64

3 Electrical Differences
3.1 Pin assignment comparison
Q64 is designed to be compatible to GR64001. There are only few pins which show some differences. Below table shows the pin assignment differences between GR64001 and Q64. GR64001 Pin 35 41 Name TX_ON DTM1 Function Transmit Indication UART1 Transmit Pin 35 41 Q64 Name GPIO16 DTM1/GPIO18 Function General purpose IO UART1 Transmit / General purpose IO (multiplex) 42 DFM1 UART1 Received 42 DFM1/GPIO17 UART1 Transmit / General purpose IO (multiplex) 45 46 49 RESERVED RESERVED RESERVED 45 46 49 USBDP USBDN VUSB USB USB USB

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Hardware Differences between Wireless CPU? Q64 and GR64

3.2 Electrical level differences
The following table summarizes the main electrical level differences between Q64 and GR64001 on the board connector signals. Type POWER Signal Name
VCC

GR64001 Signal Level / Configuration
Vmin =3.2V Vnom=3.6V Vmax=4.5V

Q64 Signal Level / Configuration
Vmin=3.2V Vnom=3.6V Vmax=4.8V Vmin =4.6V Vmax=6V Imax=800mA VOmin=2.74V VOnom=2.8V VOmax=2.86V ILmax=15mA 2V8 Interface VILmin=-0.5V VILmax=0.84V VIHmin=1.96V VIHmax=3.2V VOLmin=0V VOLmax=0.4V VOHmin=2.64V VOHmax=2.86V 2V8 Interface VILmin=-0.3V VILmax=0.15V VIHmin=1.6V VIHmax= 3.1V VOLmin=0V VOLmax=0.4V VOHmin=1.87V VOHmax=2.8V 10 Bit Resolution Analogue input from 0V to 2V 2V8 Digital Level IOM-2 Compatible Device

CHG_IN

VMIN =4.5V Vmax=6V Imax=500mA

VREF (OUTPUT)

VOmin=2.74V VOnom=2.8V VOmax=2.86V ILmax=75mA

UART1

DTM1/GPIO18, DFM1/GPIO17, RTS1/GPIO9, CTS1/GPIO12, DTR1/GPIO10, DSR1/GPIO7, RI/GPIO8, DCD1/GPIO11

2V8 Interface VILmin=0V VILmax=0.3V VIHmin=2.1V VIHmax=2.8V VOLmin=0V VOLmax=0.4V VOHmin=1.88V VOHmax=2.8V

UART2

DTM3, DFM3

2V8 Interface VILmin=0V VILmax=0.3V VIHmin=2.1V VIHmax=2.8V VOLmin=0V VOLmax=0.4V VOHmin=1.88V VOHmax=2.8V

ADC

ADIN1, ADIN2, ADIN3, ADIN4/GPIO5

10 Bit Resolution Analogue input from 0V to 2.59V 2V8 Digital Level Based On Texas Instruments SSI Standard

PCM

SSPDTM, SSPDFM, SSPFS, SSPCLK

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Hardware Differences between Wireless CPU? Q64 and GR64 Type AUDIO Signal Name
BUZZER

GR64001 Signal Level / Configuration
Common Emitter Connection, which needs to be driven by a transistor. VOmin =2.4V VOnom=2.8V VOmax=3.3V IOnom=8mA

Q64 Signal Level / Configuration
Open Drain Output VOLmax=0.4V. Power transistor included inside Q64 ILmax=100mA

RTC

VRTC

VImin=1.0V VImax=2V

VImin=1.85V VImax=2.5V

VOnom=1.5V

VOnom=2.45V 2V8 GPIO (IN OR OUT) VILmin=-0.5V VILmax=0.84V VIHmin=1.96V VIHmax=3.2V

OTHERS

TX_ON – GR64 GPIO16 – Q64

2V8 Logic (OUT ONLY)

VOHmin=2V VOHnom=2.8V VOHmax=3V VOLmax=1V

VOHmin=2.64V VOHnom=2.8V VOHmax=2.86V VOLmax=0.4V VOLmin=0V

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Hardware Differences between Wireless CPU? Q64 and GR64

3.3 ON/OFF Sequence
GR64 and Q64 show the similar Power-ON and Power-OFF sequence. Power on sequence: Q64 needs to hold the low state for at least 1500ms when GR64 requires 450ms. Warning: In some circumstances, the power on for Q64 can require up to 8 second. To guarantee the power on, the low state has to be hold during 8 seconds, or the application has to receive “OK” answer after sending “AT” command, or receive a WIND indicator from Q64. Power off sequence: Q64 and GR64 are equivalent for waveform and timing.

Figure 1: Power-ON and Power-OFF sequence between GR64 and Q64

3.4 VREF
GR64 provides a voltage reference interface for user applications (VREF). In case of GR64002, VREF can be set as an input, this input to drive internal level shifter to determine the GR64002 digital interface from 1.8V to 5.5V. Digital level will be equal to the voltage applied on VREF by the application. This feature is not available for GR64001 and Q64, in which VREF pin is a 2.8V output. Below table shows the electrical characteristics comparison in GR64001 and Q64. Signal VREF (GR64001 case) Parameter Output Voltage Output Current Output Voltage Output Current
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Min 2.74

Typ 2.8

Max 2.86 80

Unit V mA V mA

VREF (Q64 case)

2.74

2.8

2.86 15

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Hardware Differences between Wireless CPU? Q64 and GR64

3.5 SIM Interface
Q64 and GR64 provide interface for 1.8V and 3.0V SIM cards. For both GR64 and Q64, decoupling capacitor is necessary for the SIM card supply (SIMVCC), however, in case of Q64, 100nF decoupling capacitor has to be used instead of 2.2?F for GR64. Also, it is recommended to have Transient Voltage Suppressor diodes (TVS) on the signal connected to the SIM socket in order to prevent any Electrostatics Discharge. TVS diodes with low capacitance (less than 10 pF) have to be connected on SIMCLK and SIMDAT signals to avoid any disturbance of the rising and falling edge. These types of diodes are mandatory for the Full Type Approval. They shall be placed as close as possible to the SIM socket. The following references can be used: DALC208SC6 from ST Microelectronics

C2=100nF in Q64 C2=2.2?F in GR64

Figure 2: Example of SIM Socket implementation

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Hardware Differences between Wireless CPU? Q64 and GR64

3.6 UART1 multiplex with GPIO
There are some differences between the UART1 interface in GR64 and Q64, which are related to the multiplexing with GPIO signals. GR64 Signals DTM1 DFM1 RTS1/GPIO9 CTS1/GPIO12 DTR1/GPIO10 DSR1/GPIO7 RI/GPIO8 DCD1/GPIO11 Multiplex with GPIO9 GPIO12 GPIO10 GPIO7 GPIO8 GPIO11 Q64 Signals DTM1/GPIO18 DFM1/GPIO17 RTS1/GPIO9 CTS1/GPIO12 DTR1/GPIO10 DSR1/GPIO7 RI/GPIO8 DCD1/GPIO11 Multiplex with GPIO18 GPIO17 GPIO9 GPIO12 GPIO10 GPIO7 GPIO8 GPIO11 Description Transmit serial data Receive serial data Request To Send Clear To Send Data Terminal Ready Data Set Ready Ring Indicator Data Carrier Detect

In GR64, DTM1 and DFM1 are not multiplexed with GPIO. And these two signals can still be driven as a UART interface, even if either one or more of the six GPIOs of RTS1/GPIO9, CTS1/GPIO12, DTR1/GPIO10, DSR1/GPIO7, RI/GPIO8 and DCD1/GPIO11 are allocated as GPIO. In Q64 DTM1 and DFM1 are multiplexed with GPIO, GPIO18 and GPIO17 respectively. When the UART1 service is used, the whole multiplex signals become unavailable for other purpose. In the same way if one or more GPIOs of these eight GPIOs are allocated, the UART1 service is unavailable.

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Hardware Differences between Wireless CPU? Q64 and GR64

3.7 BUZZER
For GR64, the BUZZER signal needs to be connected to an inverting transistorbuffer followed by a piezoelectric transducer.

Figure 3: Example of buzzer implementation in GR64 For Q64, the BUZZER interface is different and a power transistor is included, which is an open drain output. A buzzer can be directly connected between this output and VCC. The maximum peak current is 100 mA and the maximum average current is 40 mA. A diode against transient peak voltage must be added as described below.
VCC

R1

D1

C1
BUZZER

Q64

Figure 4: Example of buzzer implementation in Q64 Where: R1 must be chosen in order to limit the current at IPEAK max C1 = 0 to 100 nF (depending on the buzzer type) D1 = BAS16 (for example) Recommended characteristics for the buzzer: ? ? ? ? electro-magnetic type Impedance: 7 to 30 ? Sensitivity: 90 dB SPL min @ 10 cm Current: 60 to 90 mA
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Hardware Differences between Wireless CPU? Q64 and GR64

3.8 LED
In GR64, the LED signal is derived from a standard GPIO signal, which is either high or low level output. And user requires to implement some form of transistor circuit as shown. In Q64, when LED signal is activated in LED/GPIO6 pin, there are only high or open states. Therefore, a pull down base resistor R1 is MANDATORY to be implemented in the transistor circuit below.

Figure 5: Example of LED implementation

3.9 VRTC
This pin is used as a back-up power supply for the internal Real Time Clock. The RTC is supported by the Q64 when VCC is available but a back-up power supply is needed to save date and hour when the VCC is switched off. If the VCC is available, the back-up battery can be charged by the internal 2.5V power supply regulator. Comparing with GR64, the supply voltage from the RTC battery and the charging voltage to the RTC battery are higher in Q64. Below table shows the differences between VRTC in GR64 and Q64. Signal VRTC (in GR64) VRTC (in Q64) State I/O I/O VImin 1.85 1.0 1.8 VInom VImax 2.5 2 Vonom 2.45 1.5 Unit V V

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Hardware Differences between Wireless CPU? Q64 and GR64

3.10

USB

This feature is only supported by Q64 (not available on GR64). A 3 wires USB slave interface is available. It is compliant to USB 2.0 protocol signaling, but it is not compliant with electrical interface (VUSB being 3.3V instead of 5V for the USB standard). The USB interface signals are VUSB, USBDP and USBDN. Pin description Signal VUSB USBDP USBDN Pin number 49 45 46 I/O I I/O I/O I/O type 3V3 3V3 3V3 Description USB Power Supply Differential data interface positive Differential data interface negative

A 5V to 3.3V voltage regulator is needed between the external interface power in line (+5V) and the module line (VUSB). Also, an EMI/RFI filter with ESD diode is required. A typical USB circuitry is shown below:

Recommended components ? ? ? ? R1: 1MOhm C1, C3: 100nF C2, C4: 2.2?F D1: STF2002-22 from SEMTECH
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Hardware Differences between Wireless CPU? Q64 and GR64 ? U1: LP2985AIM 3.3V from NATIONAL SEMICONDUCTOR

The regulator used is a 3.3V regulator. It is supplied via J1 when the USB wire is connected. The EMI/RFI filter with ESD protection is D1. The D1 internal pull-up resistor used to detect full speed is not connected as it is embedded in the Wireless CPU?. R1 and C1 must be closed to J1.

3.11

PCM Interface

PCM interface is not the same standard for GR64 and Q64. Electrical interface is compatible but sequence and timing refer to different standards as detailed below: GR64 The PCM digital audio interface for GR64 is based upon the Texas Instruments SSI standard. The SSP interface can be programmed for data frame sizes between 4 to 16 bits. The clock rate is fixed to 128kHz. For standard GSM voice a 13-Bit PCM data word is embedded in a 16-bit word frame. In Q64 The PCM interface allows the connectivity with audio standard peripherals, which are ? ? ? ? ? ? IOM-2 compatible device on physical level Master mode only with 6 slots by frame, user only on slot 0 Bit rate single clock mode at 768 kHz only 16 bits data word MSB first only Linear Law only (no compression law) Long Frame Synchronization only The frame synchronization signal delivers an 8 kHz frequency pulse that synchronizes the frame data in and the frame data out.

Please refer to [1] Wireless CPU? Q64 Product Technical Specification and Customer Design Guidelines for more information on its PCM interface.

3.12

Antenna Diagnostics

GR64 provides antenna diagnostics using AT*E2ANTDI AT command to determine the antenna connection through an ADC Antenna sense voltage return value. This feature is not supported by Q64.

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Hardware Differences between Wireless CPU? Q64 and GR64

3.13

TX_ON

In GR64, TX_ON (pin 35) indicates the GSM transceiver is transmitting RF signals. This feature is not supported by Q64 and it is replaced by a 2V8 GPIO interface, which is named as GPIO16 (pin 35).

3.14

SERVICE/Programming

The SERVICE interface is flash memory programming enable input. For GR64, this signal is not needed to perform normal SW-updating through “Updater”, but it is needed to support special service tools from Wavecom. For Q64, the SW-updating is done by XMODEM download. Same as GR64, this signal is needed to support special service tools from Wavecom. Signal SERVICE (GR64 case) State Operating Mode 0 0 1 SERVICE (Q64 case) 0 0 Normal Use Download via “Updater” Download specific Normal Use Download via XMODEM Download specific(*) Comments No Download Download by using “Updater” Need WAVECOM PC Software No Download AT command for Download AT+WDWL 1 Need WAVECOM PC Software

(*) It is highly recommended to pull the ON/OFF signal to low during software update using Wavecom specific software.

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Hardware Differences between Wireless CPU? Q64 and GR64

4 Mechanical Differences
Q64 is pin to pin and size compatible with GR64. They are in same board size and board to board height.

4.1 Overall dimensions
GR64001 Length Width Weight Thickness Exclude RF connector Include RF Connector 50 mm 33 mm 8 g 4.0 mm 6.8 mm Q64 50 mm 33 mm 11.6 g 6.7 mm 6.8 mm

Figure 6: Thickness of GR64001 Wireless CPU? (including shieding can, PCB and the components on the top layer)

Figure 7: Thickness of Q64 Wireless CPU? (including shieding can, PCB and WMP100)

Please refer Section 4.3 for the details mechanical drawing of Wireless CPU? Q64 and GR64001.

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Hardware Differences between Wireless CPU? Q64 and GR64

4.2 Interface Description
The pictures below show the mechanical design of the Wireless CPU? along with the positions of the different connectors and mounting holes. On the top side, Wavecom Wireless Microprocessor? WMP100 and a MMCX RF connector are mounted. On the bottom side, same as GR64, components inside are protected with tin coated steel ASI 1008/1010 covers that meet the environmental and EMC requirements.
Wavecom Wireless Microprocessor WMP100

MMCX Antenna Connector

Figure 8: Wireless CPU? Q64 viewed from above

Mounting hole and GND connection

Shielding circuits

60-pin system connector

Figure 9: Wireless CPU? Q64 viewed from below

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Hardware Differences between Wireless CPU? Q64 and GR64

4.3 Physical Dimensions

GR64001 Wireless CPU?

Q64 Wireless CPU?

Figure 10: Dimensions of the Q64 and GR64001 Wireless CPU? Measurements are given in millimetres.

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