Aiwa XR-M55 Service Manual page 39

IC DESCRIPTION (U, LH, HR, EZ, Kk)
IC, M38B57MCH-P226FP
Pin No. pti
| oe JOG analog input. (Not used)
I-RDS-SIG Li | RDS tuning level A/D input.
1-HOLD a | System hold input A/D input.
I-SW-TP | 1 | Cassette detect switch A/D input.
I-KEY2 | 1 | Key 2.A/D input
L-KEY1 | 1 | Key 1 A/D input.
O-SHIFT
O-LED-AUX
Es} = fe)
I
O-LED-
O-TU
rs) fo
a
4
1
bo
3) ES
e)
Z| 2
pay w
"n
a
XIN
4.19MHz ceralock
wr *
ae a
6 VDD Power supply.
7 0-SOL Deck solenoid ON/OFF output
O-REC/PB
O
8
Deck Record/Playback select output
Qsound chip enable output.(NC)
te)
"a
Zz 1]
O-BIAS
N
2
3
24
I-WRQ/RDCL
O-POWER
Q-LED
O-DATA
Record 85kHz oscillator ON/OFF output.
N
Power ON/OFF control output
nN ws
Common serial data output
26 O-CLK
N foe)
an Ww
VEE
O-PLL-CE
0 O-MOTOR
1 O-RECMUTE
32 ~42 0-G1 ~0-G11
43 ~ 56 O-P1 ~ O-P14
a O-P15/1-OIRT
58 O-P16/I-RDS
9 O-P17/l-AMST
O-P18/1-LW
O-P19/1-SW
2 O-P20/1-AM10K
3 O-P21/I-AS
O-P22/I-STOP
Tape function LED ON/OFF output
Common serial clock output.
PLL chip enable output
Deck motor ON/OFF control output
N \o
w
Record mute output.
FL grid G1 ~ G11 output.
FL port P1 ~ P14 output.
WA
FL port P15 output / OIRT diode detect input.
wa
FL port P17 output / AM stereo diode detect input.
FL port P18 output / LW diode detect input. ,
an =
FL port P16 output / RDS diode detect input.
OY
CD WRQ input / RDS clock input.
O/l
O/I
O/I
ofl
o/l
Of
O/fl
/I 6 0
a
— 55 —