Table 3-19. Gpio I/O; Figure 3-56. Bluetooth Usb Interface Too Main Vocon - Motorola APX 5000 Service Manual

Theory of Operation
: Bluetooth
The ATMEL bootloader is being used as a first stage bootloader that will jump to the Motorola
bootloader, which is a stage two bootloader. GPIO20 is used by the ATMEL bootloader to trap in
Flash mode. GPIO19 will be used by the Motorola bootloader to trap in Flash mode. Both pins are
active low.
The Bluetooth audio is sent over a two-channel PCM/SSI interface to the audio codec (U6405) on
the VOCON board.
Signal Name
GPIO41
GPIO49
GPIO50
GPIO51
Factory Test Points
USB_BOOT
Pin 43
Pin 31
Pin 35
Pin 33
Pin 15
Pin 3
Pin 2

Figure 3-56. Bluetooth USB Interface Too Main VOCON

Table 3-19. GPIO I/O

Pad Name
PB09 41
PB17 49
PB18 50
PB19 51
ATMEL_BOOT
= Level Translator. 3.3 volts on AVR side
GPIO Expansion Board
Schematic Name
BT_HOST_WAKEUP_3.3V
BT_PTT_3.3V
BT_SHUTDOWN_3.3V
BT_WAKEUP_3.3V
ATMEL AVR32
AT32UC3A0512
C12
PA19
E12
VBUS
D11
DP
D12
DM
D10
PA20
I/O
I
O
O
O
3-73