TM-800K Service Manual
24
8. Power amplifier: TDA1554Q (TX-RX Unit IC126)
8-1 Pin Function
Pin No.
Name
I/O
Description
1
-INV1
I
Non-inverting input 1.
2
INV2
I
Inverting input 2.
3 GND(S)
Signal
ground.
4
RR
Supply voltage ripple rejection.
5 VP1
Supply
voltage.
6 OUT1
O
Output
1.
7
GND1
Power ground 1.
8 OUT2
O
Output
2.
9 NC
No
connection.
10 OUT3
O
Output
3.
11
GND2
Power ground 2.
12 OUT4
O
Output
4.
13 VP2
Supply
voltage.
14
MODE
I
Mode select switch input.
15 NC
No
connection.
16
INV3
I
Inverting input 3.
17
-INV4
I
Non-inverting input 4.
9. Positive voltage regulator: XC62FP3302P (TX-RX Unit IC111), TA7805F (TX-RX Unit IC113),
TA78L09 (TX-RX Unit IC114), TA7808S (TX-RX Unit IC115).
10. Amplifier: NJM2904V (TX-RX Unit IC104, TX-RX Unit IC110, TX-RX Unit IC130), TA75W558FU
(TX-RX Unit IC107), TC75W51FU (TX-RX Unit IC108), NJM4558M (TX-RX Unit IC109),
TA75S01F (TX-RX Unit IC116, TX-RX Unit IC117), TA75W01FU (TX-RX Unit IC118).
11. IF detector: TA31136FN (TX-RX Unit IC119).
12. Dual D-type Flip-flop: TC4013BF (TX-RX Unit IC127).
13. RF PLL Frequency Synthesizers: ADF4111 (TX-RX Unit IC801).
14. Reset IC: IMP813LESA
15. CPU: M16C (Tx-Rx Unit IC120)
15-1 Pin Function
PIN No.
PORT
PIN NAME
I/O
DESCRIPTION
1 P94/DA1 2TN/5TN
I
2-tone/5-tone decode pulse input
2 P93/DA0 DTMF
O
DTMF/2Tone/5Tone/BEEP output
3
P92
SBC
O
SB power switch control. H: off L: on
4
P91
AFDIO
I/O
AK2346 DATA I/O (SDAT)
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