Sony HCD-MD515 Service Manual - Page 67

Board, Ic400, μpd780016ygf-021-3ba System, Controller

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• MAIN BOARD IC400 µPD780016YGF-021-3BA (SYSTEM CONTROLLER) Pin No. Pin Name I/O Function 1 to 8 O Not used (open) 9 VPP - Ground terminal 10 X2 O Main system clock output terminal (5 MHz) 11 X1 I Main system clock input terminal (5 MHz) 12 VDD (B/U) - Power supply terminal (+5V) (for back up) 13 XT2 O Sub system clock output terminal (32.768 kHz) 14 XT1 I Sub system clock input terminal (32.768 kHz) 15 RESET System reset signal input terminal from the reset signal generator (IC401) I For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H" 16 AUB-IN I Audio bus signal input terminal 17 AUB-OUT O Audio bus signal output terminal 18 YBCLK0 O Clock signal output terminal to the master controller (IC500) and CD mechanism controller (IC600) 19 YBCLKI I Clock signal input terminal to the master controller (IC500) and CD mechanism controller (IC600) 20 YBUS BSY I Busy signal input from the master controller (IC500) 21 RDS CLK I Clock signal input from the RDS decoder (IC361) (AEP, UK, German, North European models only) 22 RDS DATA I Serial data input from the RDS decoder (IC361) (AEP, UK, German, North European models only) 23 VDD (B/U) - Power supply terminal (+5V) (for back up) 24 AVREF I Reference voltage (+5V) input terminal (for A/D converter) 25 KEY0 I Key input terminal DIMMER key input (S701) 26 KEY1 I Key input terminal POWER, GROOVE, DBFB key input (S700, 703, 704) 27 KEY2 I Key input terminal CD1 to 3 6, MD 6 key input (S705 to 707, 780) 28 to 31 - Not used (fixed at "L") 32 AC CUT I Power down detection input terminal "L": power down 33 AVSS - Ground terminal (for A/D converter) 34 O Not used (open) 35 FL-DATA O Serial data output to the fluorescent indicator tube driver (IC700) 36 FL-CLK O Clock signal output to the fluorescent indicator tube driver (IC700) 37 FL-CS O Chip select signal output to the fluorescent indicator tube driver (IC700) 38 AC ON O Reset signal output to the fluorescent indicator tube driver (IC700) and LED driver (IC701) "L": reset 39 O Not used (open) 40 VSS - Ground terminal 41 ISIRCS I Remote commander signal input from the SIRCS/infrared remote control select switch (IC703) 42 WSIRCS I Wired SIRCS signal input from detachable controller (RM-MD515) 43 LED LAT O Serial data latch pulse signal output to the LED driver (IC701) 44 LED DATA O Serial data output to the LED driver (IC701) 45 LED CLK O Clock data output to the LED driver (IC701) 46 427 LAT O Serial data latch pulse signal output to the M62427FP-A (IC111) 47 427 DATA O Serial data output to the M62427FP-A (IC111) 48 427 CLK O Clock signal output to the M62427FP-A (IC111) 49 4052 INH O INH output to the function switch (IC100) 50, 51 O Not used (open) 52 I Not used (fixed at "L") 53, 54 O Not used (open) 55, 56 N-CH O/D I Not used (fixed at "L") 57 to 60 SUFFIX I Input terminal for the set model setting *1 61 to 64 I Not used (fixed at "L") 65 EWS IN I Monitor input from external device Not used (fixed at "H") - 103 -

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– 103 –
•
MAIN
BOARD
IC400
μPD780016YGF-021-3BA (SYSTEM
CONTROLLER)
Pin No.
Pin Name
I/O
Function
1 to 8
O
Not used (open)
9
VPP
—
Ground terminal
10
X2
O
Main system clock output terminal (5 MHz)
11
X1
I
Main system clock input terminal (5 MHz)
12
VDD (B/U)
—
Power supply terminal (+5V) (for back up)
13
XT2
O
Sub system clock output terminal (32.768 kHz)
14
XT1
I
Sub system clock input terminal (32.768 kHz)
15
RESET
I
System reset signal input terminal from the reset signal generator (IC401)
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
16
AUB-IN
I
Audio bus signal input terminal
17
AUB-OUT
O
Audio bus signal output terminal
18
YBCLK0
O
Clock signal output terminal to the master controller (IC500) and CD mechanism controller (IC600)
19
YBCLKI
I
Clock signal input terminal to the master controller (IC500) and CD mechanism controller (IC600)
20
YBUS BSY
I
Busy signal input from the master controller (IC500)
21
RDS CLK
I
Clock signal input from the RDS decoder (IC361) (AEP, UK, German, North European models only)
22
RDS DATA
I
Serial data input from the RDS decoder (IC361) (AEP, UK, German, North European models only)
23
VDD (B/U)
—
Power supply terminal (+5V) (for back up)
24
AVREF
I
Reference voltage (+5V) input terminal (for A/D converter)
25
KEY0
I
Key input terminal DIMMER key input (S701)
26
KEY1
I
Key input terminal POWER, GROOVE, DBFB key input (S700, 703, 704)
27
KEY2
I
Key input terminal CD1 to 3
6
, MD
6
key input (S705 to 707, 780)
28 to 31
—
Not used (fixed at “L”)
32
AC CUT
I
Power down detection input terminal
“L”: power down
33
AVSS
—
Ground terminal (for A/D converter)
34
O
Not used (open)
35
FL-DATA
O
Serial data output to the fluorescent indicator tube driver (IC700)
36
FL-CLK
O
Clock signal output to the fluorescent indicator tube driver (IC700)
37
FL-CS
O
Chip select signal output to the fluorescent indicator tube driver (IC700)
38
AC ON
O
Reset signal output to the fluorescent indicator tube driver (IC700) and LED driver (IC701)
“L”: reset
39
O
Not used (open)
40
VSS
—
Ground terminal
41
ISIRCS
I
Remote commander signal input from the SIRCS/infrared remote control select switch (IC703)
42
WSIRCS
I
Wired SIRCS signal input from detachable controller (RM-MD515)
43
LED LAT
O
Serial data latch pulse signal output to the LED driver (IC701)
44
LED DATA
O
Serial data output to the LED driver (IC701)
45
LED CLK
O
Clock data output to the LED driver (IC701)
46
427 LAT
O
Serial data latch pulse signal output to the M62427FP-A (IC111)
47
427 DATA
O
Serial data output to the M62427FP-A (IC111)
48
427 CLK
O
Clock signal output to the M62427FP-A (IC111)
49
4052 INH
O
INH output to the function switch (IC100)
50, 51
O
Not used (open)
52
I
Not used (fixed at “L”)
53, 54
O
Not used (open)
55, 56
N-CH O/D
I
Not used (fixed at “L”)
57 to 60
SUFFIX
I
Input terminal for the set model setting *1
61 to 64
I
Not used (fixed at “L”)
65
EWS IN
I
Monitor input from external device
Not used (fixed at “H”)