|
UNKNOWN connector at the mobile phone |
| Pin |
Signal |
Description |
| 1 | GND | Connected with 22pf to pin 3 | | 2 | RF out | Connected with 33 pf to pin 8, 33 pf to pin, 33 pf to pin 7 | | 3 | GND | | | 4 | BAT_FDBAK | | | 5 | MAN_TEST | connected with 10k to L275 (not used on digital phones) | | 6 | RS232_TX | connected to MCU SPI bus | | 7 | RS232_RX | connected to MCU SPI bus | | 8 | AUDIO_IN | | | 9 | AUDIO_OUT | | | 10 | GNDA | Ground reference) Connected with 33 pf to pin 13, 33 pf to pin 14 | | 11 | UPLINK | 11,12,13 - DSC bus connected to the BIC | | 12 | DOWNLINK | | | 13 | DSC_EN_B | | | 14 | EXT_B+ | | | 15 | Gnd | | | |
