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6-7. IC PIN FUNCTION DESCRIPTION
MAIN BOARD IC501 µPD78058GC-913-3B9 (SYSTEM CONTROL)
1 DSEL I Destination setting pin
2 RC_IN0 I Rotary remote commander input pin (A/D input)
3 SD_IN I Station detection signal input
4 AVSS — GND
5 ST I/O Stereo detection signal input and forced monaural signal output pin
6 PLLCE O PLL chip enable output pin
7 AVREF1 I A/D reference voltage input pin
8 PLLSI I PLL data input pin
9 PLLSO O PLL data output pin
10 PLLCKO O PLL clock output pin
11 P.ST_IN I Polar stereo input pin
12 LCDSO O LCD data output pin
13 LCDCKO O LCD clock output pin
14 LCDCE O LCD chip enable output pin
15 LCDINH O LCD blank indication control pin
16 UNISI I Data input pin (for SONY BUS)
17 UNISO O Data output pin (for SONY BUS)
18 UNICKI I Clock input pin (for SONY BUS)
19 UNICKO O Clock output pin (for SONY BUS)
20 BUSON O BUS ON control signal output pin (for SONY BUS)
21 SYSRST O System reset signal output pin
22 AMPON O Power amp power supply control pin
23 AMP_MUT O Power amp muting control pin. At muting: “L”
24 TUNON O Tape power supply control pin
25 FM_ON O FM power supply control pin
26 PW_ON O System power supply control pin
27 COLOR I/O Illumination color selection input/output pin
At initial mode: valid/invalid selection input of color select function
At normal mode: color selection output
28 AMSON I Tape AMS control pin. At AMS: “L”
29 REL I Reel table rotation detection pin
30 MTLIN I AUTO METAL detection pin. “L”: METAL
31, 32 POS3, POS2 I Tape position control pin
33 GND — GND
34, 35 POS0, POS1 I Tape position control pin
36 LM_LOD O Loading motor control pin (loading direction)
37 LM_EJ O Loading motor control pin (eject direction)
38 N/R_OUT O Forward/reverse control pin
39 P.ON O Polar stereo detection output pin. At polar stereo on: “H”
40 CM_ON O Capstan motor control pin
41 TAPON O Tape power supply control pin
42 COLSEL I Illumination color setting pin. “L”: amber, “H”: green
43 RC_IN1 I Rotary remote commander input pin (A/D input)
44 TEST I Test mode setting pin
Pin No. Pin Name I/O Function