Diagrams; Ic Pin Function Description - Sony HCD-XB66 Service Manual

7-1. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC301 µPD780018YGF-028-3BA (SYSTEM CONTROLLER)
Pin No. Pin Name
1 TA-MUTE
2 DBFB-H/L
3 427-LAT
4 K-CON-LAT
5 K-CON-ON
6 F-RELAY
7 R-RELAY
8 PL-RELAY
9 TEST
10 X2
11 X1
12 VDD
13 XT2
14 XT1
15 RESET
16 (INT/IN)
17 (INT/IN/OUT)
18 SCOR
19 SOFT-TEST
20 AC-CUT
21 RDS-INT
22 RDS-DATA
23 VDD
24 AVDD
25 ADJ
26 A-SHUT
27 B-SHUT
28 B-HALF
29 CLK-CHECK
30 SPEC-IN
31 ADJ2
32 DEMO-MODE
33 AVSS
34 SQ-DATA-IN
35 NCO
36
SQ-CLK
37
SW-ON/OFF
38
FUNC1
39 FUNC2
40 VSS
41 VOL-LAT
42 PL-LAT
43 COM-DIN
SECTION 7

DIAGRAMS

I/O
O
Line muting on/off control signal output terminal "L": muting on
DBFB normal/high selection signal output to the M62427FP (IC201)
O
"L": DBFB high, "H": DBFB low
O
Serial data latch pulse output to the M62427FP (IC201)
O
Serial data latch pulse output terminal Not used (open)
O On/off selection signal output of the key control circuit "L": on Not used (open)
O
Relay drive signal output for the speaker protect "H": on
O
Relay drive signal output for the speaker protect "H": on Not used (open)
O
Relay drive signal output for the speaker protect "H": on Not used (open)
I
Test terminal Connected to ground
O
Main system clock output terminal (5 MHz)
I Main system clock input terminal (5 MHz)
—
Power supply terminal (+5V)
O
Sub system clock output terminal (32.768 kHz)
I
Sub system clock input terminal (32.768 kHz)
System reset signal input from the reset signal generator (IC302) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I
Connected to ground
I
Connected to ground
I
Subcode sync (S0+S1) detection signal input from the CXD2519Q (IC103)
O
Output terminal for the software test (open)
I
AC off detection signal input from the reset signal generator (IC302)
I
Serial data reading clock signal input for the radio data system Not used (fixed at "L")
I Serial data input for the radio data system Not used (open)
—
Power supply terminal (+5V)
—
Power supply terminal (+5V) (for A/D conversion)
I
Setting terminal for the CD test mode Normally: fixed at "H"
I
Shut off detection signal input from the deck-A side reel pulse detector (Q1001)
I
Shut off detection signal input from the deck-B side reel pulse detector (Q1002)
I Detection input from the deck-B half detect switch (S1006)
I
Not used (fixed at "L")
I
Setting terminal for the version
I
Setting terminal for the CD test mode Normally: "L"
I
Setting terminal for the demonstration H/L Fixed at "L"
— Ground terminal (for A/D conversion)
I
Sub-code Q data input from the CXD2519Q (IC103)
O
Not used (open)
O
Sub-code Q data reading clock signal output to the CXD2519Q (IC103)
O
Super woofer speaker on/off control signal output terminal Not used (open)
I
Setting terminal for the function 1 Fixed at "L"
I Setting terminal for the function 2 Fixed at "L"
—
Ground terminal
O
Serial data latch pulse output terminal Not used (open)
O
Serial data latch pulse output terminal Not used (open)
I
Serial data input terminal Not used (fixed at "L")
Function
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