V.120c
© 2001 Motorola, Inc.
56
Troubleshooting
CONNECTORS:
A13
CE BUS AND COMMUNICATIONS NOTES:
1. P2K Products supports two Serial Communication Protocols
I. USB (Universal Serial Bus) II. RS232
2. USB: USES: Flashing phones, Desktop Speaker phone, Pro- installed car kit
3. USB needs USB cable to interfere with Personal computer.
4. RS232: USES: In factory for testing and phasing phones, flashing phone ( will eventually phase
out)
5. RS232 needs RS232 Data head to interface to PC.
6. USB and RS232 (3 wire) communications takes place through CCAP interface.
7. CE BUS pin 2-dual functions- BATTFDBK and MANST
8. BATTFDBK used for controlled power dissipation by the charger.
9. MANTST is used to detect the type of charger (Full rate, Mid rate, and Invalid).
10. Initially CCAP (ADC) reads the voltage on this pin (pin2) and then determines the charger type
and then the BATTFDBK signal is active.
11. SWB+: is the power supply for speaker phone, RS232 data head, FM radio, and blue tooth clip on.
When external supply present SWB+ should be low.
12. SWB+ is used to communicate(through toggling high or low) with desk top charger. High to
charge front pocket, and when charging is over toggles low.
Summary of Contents for Tarpon V. 120C
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Page 23: ...V 120c 2001 Motorola Inc 23 Troubleshooting FL11 1 FL11 3 FL11 6 L15 ...
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