After Sales
Technical Documentation
RAE/RAK–1N
PDA Hardware
Page 6 – 24
Original, 08/96
Note 2. MICCON = Hands–free microfone connector on PDA module
Note 3. SC = System Connector
Table 15. External Signals and Connections, Outputs
Signal Name Signal description To (1,2,3)
BACKLIGHTO Backlights on/off (control) LCDMCON /
BACKLIGH-
TO
KEYDO(2:0) Keymatrix drive lines LCMCON /
KEYD(2:0)
KEYSO(1:0) Keymatrix sense lines LCMCON /
KEYS(1:0)
LCDDO(3:0) PDA LCD Data LCMCON /
LCDD(3:0)
DISPONO PDA LCD Display on control signal LCMCON /
DISPON
FPO PDA LCD Frame Pulse LCMCON /
FP
PCLKO PDA LCD Pixel Clock LCMCON /
PCLK
LPO PDA LCD Line Pulse LCMCON /
LP
PHFMICNO Negative Hands Free MIC input MICCON / 1
PHFMICPO Positive Hands Free MIC input MICCON / 2
COL(3:0)O Lines for keypad write LCDMCON /
LCDMCOL(
3:0)
UIF(3:0)O Lines for keypad read and LCD–controller data LCDMCON /
LCDMUIF(3:
0)
UIF4O Line for keypad read and LCD–controller read/write strobe LCDMCON /
LCDMUIF4
UIF5O Line for keypad read and LCD–controller data/insruction register
selection
LCDMCON /
LCDMUIF5
UIF6O LCD–controller enable srobe LCDMCON /
LCDMUIF6
MBUSO Serial bidirectional data and control between the handphone and
accesseries
SC / SYSM-
BUS
EXTMICO External audio input from accessories or handsfree microphone.
Multiplexed with junction box connection indication. 16.8k pull
down in HP
SC / SY-
SEXTMIC
EXTEARO External audio output to accessories or handsfree speaker.
100k pull–down in HP to turn on the junction box.
SC / SY-
SEXTEAR
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