Ic Pin Functions; 1C202 ((Upd75518Gf-195-3B9) Main Controller - Sony STR-D715 Service Manual

3-9. IC PIN FUNCTIONS
¢ 1C202 ( uPD75518GF-195-3B9) MAIN CONTROLLER
P.IN
A/D. REF
POWER IN
REFERENCE VOLTAGE OF A/D CONVERTER (+5V)
Nn
2 ~ ie
<
+
Ww
V
PEN
UNER MUTE
ONE latch
++.
T. MUT
TONE. LAT
"I
O J y
td
Zz
LOW BOOST
KEY-O. C
KEY-O. B
KEY-O. A
LOW BOOST ON/OFF
EY OUT CONTROL AO
EY OUT CONTROL Al
EY OUT CONTROL A2
TAPE MONITOR ON/OFF
EY IN CONTROL AO
EY IN CONTROL Al
KEY IN CONTROL A2
KEY INPUT
FL DRIVER SERIAL DATA
FL DRIVER SERIAL CLOCK
10
11
12
13
14
15
16
17
18
19
~
KEY-I. C
KEY-I.B
KEY-I.A
KEY. IN
FL. DATA
FL. CK
a
Zz iw)
21
22
23
24
25
VR (+)
VR ()
FL. LS
FL. CL
LED CK
VOLUME UP control
VOLUME DOWN control
FL DRIVER LATCH
FL DRIVER CLEAR
LED clock
26 LED DATA LED data
27 SURR. RY SURROUND RELAY drive
28 CENTER. RY CENTER RELAY drive
29 LED LAT
30 VOL LED
31 VIDEO-A
32 BRIDGEABLE OUT
LED latch (PULL-UP: 2.2k)
VOLUME LED drive (PULL-UP: 2.2k)
VIDEO A SELECT (PULL-UP: 2.2k)
SP=8Q : 2CH> "L", SURR > "H"/SP=4Q : ALL "H" (PULL-UP: 2.2k)
Wl w
Ww
i)
4
35
36
37
38
39
40
|
Z 0
GND (PULL-UP: 2.2k)
GND (PULL-UP: 2.2k)
GND (PULL-UP: 2.2k)
SP4Q /8Q SELECT4Q = "L" 8Q ="H" (PULL-UP: 2.2k)
POWER RELAY drive
SPEAKER RELAY drive
SERIAL CLOCK
BRIDGEABLE IN
PW. RY
SP. RY
S. CLK
a