Table 3-17. Gpio I/O - Motorola APX 1000 Detailed Service Manual

3-66
The Bluetooth audio is sent over a two-channel PCM/SSI interface to the audio codec (U6405) on
the Main board.
Signal Name
GPIO41
GPIO49
GPIO50
GPIO51

Table 3-17. GPIO I/O

Pad Name GPIO
PB09 41
PB17 49
PB18 50
PB19 51
Theory of Operation
Keypad Board Schematic
Name
BT_HOST_WAKEUP_3.3V
BT_PTT_3.3V
BT_SHUTDOWN_3.3V
BT_WAKEUP_3.3V
: Bluetooth
I/O
I
O
O
O