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4-1. IC PIN DESCRIPTION
¥ IC801 mPD17705GC-526-3B9 (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 SIRCS I SIRCS input (A/D)
2 IN-SW I CD mechanism position detection
3 D-SW I CD mechanism position detection
4 SELF-SW I CD mechanism position detection
5 L-SW I LIMIT switch
6 LM-EJ O Loading motor control (Eject direction)
7 LM-LOD O Loading motor control (Loading direction)
8 ANT-ON O Power control for amplifier.
9 MONO O Force MONO output
10 SD I SD signal input
11 BAND-SW I Band plan setting of general area.
12 AREA1-SW I Destination select 1
13 AREA2-SW I Destination select 2
14, 15 RE1, 2 I Rotary encoder input 1, 2
16 SEEK/SEEK O SEEK output
17 Ð 20 NC Ñ Not used.
21 GND3 Ñ GND
22 Ð 24 KEYIN3 Ð 1 I A/D key input 3 Ð 1
25 ROT-IN I Rotary commander input
26 S-METER I FM and AM common signal meter A/D conversion input
27 TEST-SW I TEST mode select input
28 AM-IFC I AM center frequency input
29 FM-IFC I FM center frequency input
30 VDD2 Ñ Power supply (+5 V)
31 VCOH-FM I Local oscillation frequency input (FM)
32 VCOL-AM I Local oscillation frequency input (AM)
33 GND2 Ñ GND
34 NC Ñ Not used.
35 EO1-PDOUT O Error out output
36 TESTO Ñ Fixed at ÒLÓ.
37 AM-ON(TU-ON) O AM power output (AM select)
38 FM-ON(FM/AM) O FM power output (FM select)
39 LCL/DX O LOCAL/DX select (ÒHÓ : LOCAL, ÒLÓ : DX)
40 BEEP O BEEP output
41 ACC-IN I Accessory input
42 SCOR I SUBQ data read request
43 MUTE O System mute output
44 AMP-MUTE O Power amplifier mute output
45 TEL-MUTE O Telephone mute output
46 PH2 Ñ Fixed at ÒHÓ in this set.
47 VOL-CE O Electric volume chip select
48 VOL-CLK O Electric volume serial clock
49 VOL-DATA O Electric volume serial data
50 EMPHO O De-emphasis control output
51 PW-ON O System power control
52 MD-ON O Loading motor power
53 CD-ON O Servo drive power
54 ILL-ON O Illumination output
55, 56 MOD1, 2 O Bus boost control 1, 2
57 PH3 Ñ Fixed at ÒHÓ in this set.
58 LCD-CE O LCD drive chip select output
SECTION 4
DIAGRAMS
