After Sales
Technical Documentation
RAE/RAK–1N
Baseband
Page 2–14
Original, 08/96
Table 14. Accessory HF speaker
HFEAR
1 kHz rms
NOTES
Level –10 dBm0 / 620
mVrms
0 dBm0 = 1965 mVrms
Codec gain –16 dB nominal
Output attenuation 6 dB 6 dB attenuation because of single ended output.
Cable level 50 mVrms nominal minimum impedance 1k
HFJ gain 27 dB
HFJ output level 1.1 Vrms nominal
Pressure about –2 dBPa 50 cm from loudspeaker
Connectors
Connectors to other modules of the product
Table 15. PDA board to board connector (B2B)
Signal Name Pin(s) Notes
VB 1,44 Battery voltage to the PDA module.
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 data
RBUSTXD 9 RBUS transmit data
VL1 11 Logic supply voltage (4.7–5.0V)
XPWRON 12 Power key (active low)
VCHAR 14,31 Battery charging voltage.
BUZPWR 15 PWM signal buzzer control input from PDA
module
VF 16 Programming voltage for flash.
COL(3:0) 20,19,18,17 Lines for keyboard write
UIF(3:0) 27,26,25,24 Lines for keyboard read and LCD–controller
data
UIF4 28 Line for keyboard read and LCD–controller
read/write strobe
UIF5 29 Line for keyboard 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
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