Denon DCT-950R Service Manual page 50

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uPD78056GC-018-3B9
(1C901) .
SRAM/WE SRAM/OE LCDDATA
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/CD-RESET
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1c901
PD78056
uPD78056GF-0xx-3B9 Terminal Function
50
2 P16/AN16 EN UP | Pulse encoder input.
3 P17/AN17 EN DOWN I Pulse encoder input.
4 AVss GND _
6 P1311 CDMUTE I MUTE control signal input from CD changer, H: MUTE ON.
7 AVreft _
I CD mechanism serial data input.
P71/SO2 D-MS-CD ie) CD mechanism serial data output.
P20/Si1 RDS DATA I LC7074 serial data input. ;
12 P21/SO1 N.C. _
13 P22/SCK1 RDS CLK | LC7074 serial clock input.
14 P23 cD CO O CD changer serial clock output.
15 P24 DSPSEL {e) CD changer communication timing signal output.
16 P25/SI0 CD SO O CD changer serial data output.
17 P26/SO0 CD S| | CD changer serial data input.
18 P27/SCKO cD Cl I CD changer serial clock input.
19 P40 1014 SRAM data input/output.
20 P44 102 SRAM data input/output.
21 P42 103 SRAM data input/output.
22 P43 104 VO | SRAM data input/output.
23 P44 105 SRAM data input/output.
24 P45 106 SRAM data input/output.
25 P46 107 SRAM data input/output.
26 P47 108 SRAM data input/output.
27 P50 AO O | SRAM address output.
28 P51 Al (e) SRAM address output.
29 P52 A2 oO SRAM address output.
30 P53 AS O SRAM address output.
31 P54 A4 O SRAM address output.
32 P55 AS O SRAM address output.
33 Vss GND roar ies
34 P56 AG oO SRAM address output.
P57 A7 SRAM address output.