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SPP-N1025/N1026
5-11. IC PIN FUNCTION DESCRIPTION
• BASE MAIN BOARD U7 TMP87CH41U (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
1
MIC MUTE
O
Microphone muting on/off control signal output to the voice speakerphone (U4) "H": muting on
2
SPK MUTE
O
Speaker muting on/off control signal output to the speaker amplifier (U14) "H": muting on
3 to 8
ROW0 to ROW5
O
Key row signal output to the key matrix "H" output when key waiting
9
PARK
I
Charge detection signal input terminal
10
FST CHG
O
Fast charge control signal output terminal
11
RX DATA
I
Receive data input from the RF unit
12
DVO
O
Not used (open)
13
SP SW
O
Speaker on/off control signal output terminal "H": speaker on
14
DCA
I
Line DC input from the PCC318 (U3)
15
NC
—
Not used (open)
16
IO ATE
I/O
Communication in/out terminal with ATE program Not used (fixed at "L")
17
NC
—
Not used (open)
18
TEST
I
Setting terminal for the test Not used (fixed at "L")
19
XTIN
I
Sub system clock input terminal Not used (open)
20
XTOUT
O
Sub system clock output terminal Not used (open)
System reset signal input terminal "L": reset
21
RESET
I
For several hundreds msec. after the power supply rises, "L": is input, then it changes to "H"
22
XIN
I
Main system clock input terminal (8 MHz)
23
XOUT
O
Main system clock output terminal (8 MHz)
24
VSS
—
Ground terminal
25
OFF HOOK
O
Hook on/off control signal output terminal
26
LINE LED
O
LED drive signal output of the LINE indicator (LED7) "L": LED on
27
SPK LED
O
LED drive signal output of the SPEAKERPHONE indicator (LED6) "L": LED on
28
INTCOM LED
O
LED drive signal output of the INTERCOM indicator (LED8) "L": LED on
29
N MSG LED
O
LED drive signal output of the NEW CALL indicator (LED2) "L": LED on
30
WAIT LED
O
LED drive signal output of the VOICE MAIL indicator (LED4) "L": LED on
31
CHRG LED
O
LED drive signal output of the CHARGE indicator (LED1) "L": LED on
32
NC
—
Not used (open)
33 to 36
COL0 to COL3
I
Key column signal input from the key matrix "H" output when key pressing
37
NC
—
Not used (open)
38 to 40
VOL1 to VOL3
O
Speaker volume control signal output to the voice speakerphone (U4)
41
EE CLK
O
Serial data transfer clock signal output to the EEPROM (U6)
42
EE DI
I
Serial data input from the EEPROM (U6)
43
RINGER
O
Beep sound output to the speaker amplifier (U14)
44
RI HI
I
RINGER switch (SW1) input terminal "L": volume level is high
45
RI LO
I
RINGER switch (SW1) input terminal "L": volume level is low
46
VASS
—
Ground terminal
47
VAREF
I
Reference voltage (+2.5V) input terminal
Chip enable signal output to the RF unit
48
PLL EN
O
When PLL EN goes from "L" to "H", it load data from PLL DATA
49
PLL CLK
O
Serial data transfer clock signal output to the RF unit
50
PLL DATA
O
Serial data output to the RF unit
51
NC
—
Not used (open)
52
CAR DET
I
Carrier detection signal input from the RF unit
53
TX DATA
O
Transmit data output to the RF unit
Description
"L": charge on
"H": fast charge on
"L": hook off, "H": hook on
"L": signal, "H": no signal
22
Pin No.
Pin Name
I/O
54
EE DO
O
Serial data output to the EEPROM (U6)
55
EE CS
O
Chip select signal output to the EEPROM (U6)
56
VDD
—
Power supply terminal (+5V)
57
DCB RD
I
Line DC input or ringer detection signal input from the PCC318 (U3)
58
CIDINT
I
Caller-ID interruption signal input from the PCC318 (U3) "L" active
59
CIDSDA
I/O
Caller-ID two-way data bus with the PCC318 (U3)
60
CIDSCL
O
Caller-ID clock signal output to the PCC318 (U3)
61
MDAT
I
Caller-ID data input from the PCC318 (U3)
62
NC
—
Not used (open)
63
RO LO
O
Beep sound output level control signal output terminal "L": beep sound output level is low
64
TEL SWITCH
O
Telephone line control signal output terminal "H": telephone line on
22
Description
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