After Sales
Technical Documentation
RAE/RAK–1N
PDA Hardware
Page 6 – 14
Original, 08/96
Connectors
Connectors Inside Transceiver Unit
Table 8. PDA board to board connector
Signal Name Pin Notes
VB 1, 44 Battery voltage
GND 2, 5, 7, 10, 13,
21, 22, 23, 37,
39, 40
Ground
PHFMICN 3 PHF microphone (negative node)
PHFMICP 4 PHF microphone (positive node)
BACKLIGHT 6 Backlights on/off
RBUSRxD 8 RBUS receive (CMT <– PDA or test)
RBUSTxD 9 RBUS transmit (CMT –> PDA or test)
VL1 11 Logic supply voltage (4.75–5V)
XPWRON 12 Power key (active low)
VCHAR 14,31 Battery charging voltage. 2 pins needed
BUZZEROUT 15 Buzzer signal to buzzer on SIM module
VF 16 Programming voltage for flash.
COL(3:0) 20–17 Lines for keypad write
UIF(3:0) 27–24 Lines for keypad read and LCD–controller data
UIF4 28 Line for keypad read and LCD–controller read/
write strobe
UIF5 29 Line for keypad read and LCD–controller data/
instruction register selection
UIF6 30 LCD–controller enable strobe
DCLK 32 DBUS–data clock
DSYNC 33 DBUS–data bit sync clock
RDA 34 DBUS received data from the accessories
TDA 35 DBUS transmit data to the accessories
MBUS 36 Serial bidirectional data and control between
the handphone and accessories.
LIDOPEN 38
Lid status for CMT module
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