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6-1. EXPLANATION OF IC TERMINALS
IC602 TMP47C853F (SYSTEM CONTROL)
Pin No.
Pin name
1
DE
2
R/W
3
RS
4
HOOK
5
KO4
6
KO5
7
SP MUTE
8
AUTO INT
9
WT0
10
STD
11
XT IN
12
BELL
13
SCK
14
DATA
15
CS
16
VSS
17
NC
18
T TONE
19
DP
20
LINE CNT
21
TONE
22
KO0
23
KO1
24
KO2
25
KO3
26
TEST
27
X IN
28
X OUT
29
RESET
30
HOLD
31
RADIO CNT
32
BACK-UP
33
DATA
34
TEL MUTE
35
PH0 MUTE
36
ALERT
37
TONE/PULSE
38
NC
39
VDD
40
ROW 0
41
ROW 1
42
ROW 2
43
ROW 3
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44
LCD RST
SECTION 6
DIAGRAMS
I/O
O
Data enable output terminal.
O
Read/write select signal output. 0 : Write, 1 : Read
O
Register select signal output.
I
Hook switch DET.
I
Key return input.
I
Key return input.
O
Mute signal output.
I
Auto initial DET terminal.
–
Not used ("H" : Level).
I
Dual tone alert signal delayed steering input.
–
Not used (Open).
I
Ringer signal detect.
O
Serial clock output to EEPROM.
I/O
Serial data input/output terminal.
O
Chip select output to EEPROM.
–
Ground.
–
Not used (Open).
O
Beep signal output.
O
Dial pulse control signal output.
O
Tel line control signal output.
O
DTMF signal output.
I
Key return input.
I
Key return input.
I
Key return input.
I
Key return input.
I
Test mode terminal. "L" : Normal
I
System clock oscillator (960kHz).
O
System clock oscillator (960kHz).
I
System reset terminal.
I
Power failuer DET terminal.
O
Radio signal output control.
I
Back-up DET terminal.
I
Data input from IC301.
O
Mute signal output to speech network IC (IC101).
O
Receiver signal mute output.
O
FSK enable output.
I
Tone/pulse select input terminal.
–
Not used (Open).
–
Power supply (3V).
O
Key source output.
O
Key source output.
O
Key source output.
O
Key source output.
O
Reset signal output to LCD driver IC (IC604).
– 12 –
Description
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