User's Manual

APPLICANT: MOTOROLA, INC. FCC ID: IHDT6AC1

Exhibit 8

3.3.2 Connector pin out

Pin # Function Pin # Function

1. EXT. B+ (3.5 to 6V) 15. NU

2. EXT. B+ (3.5 to 6V) 16. TX_EN

3. SIM I/O 17. Analog GND

4. *SIM_RST 18. Audio Out+ On/Off

5. SIM VCC (3/5 Volt) 19. Audio In (Mic)

6. SIM PD 20. DSC_EN

7. DTR 21. DSR

8. TS 22. Down Link

9. Manual Test 23. Up Link

10. IRDA / RS232 Select 24. SIM_CLK

11. GND 25. TXD_U1

12. GND 26. RXD_U1

13. RI 27. CTS

14. DCD 28. RTS

Note:

1. The Audio Out line is used to send out the detected audio

and as a toggle On/Off pin.

2. The TS line is used to turn On the units by any transaction

from Low to high in this pin.

4. Modes of Operation

4.1 Turn On/Off the unit.

The D15 is powered from a single power supply in the range of

3.0 to 6.0 Vdc.

The unit will not power up automatically by connecting the

power and there are two ways to turn the unit On.

4.1.1 Turn On/Off the unit using the ON/OFF pin.

The On/Off pin (pin no’ 14 at the ZIF connector & pin no’ 18

at the DIN connector) is used as a toggel input to turn On and

Off the unit. Any drop to ground in this pin will change the

status.

To verify that the unit is On or Off you have to check the

DSC_EN line, If it is high the unit is On If it is low the

unit is Off.