Sony TA-E9000ES Service Manual page 71

• IC901 HD64F2134FA20 (Display µCOM port assign) (DISPLAY Board)
Pin No. Pin Name
1 RESET
2 XTAL
3 XTAL
4 MD1
5 MD0
6 NMI
7 STBY
8 VCC
9 FL-CLK
10 FL-LAT
11 FL-DAT
12 VSS
13 FL-CLR
14 EXCL
15 EXP-DO
16 EXP-OE
17 EXP-LAT
18 EXP-CLK
19 P91
20 P90
21 POW CONT
22 MON STATUS
23 CTRL LAT
24 CTRL-A1 OUT
25 CTRL-A1 IN
26 VOL UP
27 VOL DOWN
28 VOL LED
29 AVCC
30 VOL-POS
31 AN1
32 AN2
33 AN3
34 FUNC-SW4
35 FUNC-SW3
36 FUNC-SW2
37 FUNC-SW1
38 AVSS
39 TXD2
40 RXD2
41 DIG/ANLG SW
42 AUDIO SPLIT SW
43 2CH SW
44 MODE+ SW
45 MODE– SW
46 DOL/MPEG SW
47 VCC
48 EQ-BANK SW
49 DIG/ANA LED
50 AUD-SPLIT LED
I/O
I Reset
I 20MHz master clock
O 20MHz master clock
I 1: normal/0:boot
I Ground
I Ground
I +5V
— +5V
O FL driver clock (positive)
O FL driver latch (negative)
O FL driver data (positive)
— Ground
O FL driver clear (1 = clear)
I Pull down (10k)
O External LED data (positive)
O External LED OE (0 = enable)
O External LED latch (posi edge)
O External LED clock (posi edge)
O LED "Phono" (0 = on)
I Pull down (10k)
O Power control (0 = on)
O Monitor status (positive)
O Control latch (positive)
O Control-A1 output (H-act)
I Control-A1 input (L-act)
O Volume moter increse (1 = on)
O Volume moter decrese (1 = on)
O LED "VOLUME" (0 = on)
— +5V
I Volume position A/D inpit
I Ground
I Ground
I Sircs input ("L"-act)
I SW input selector bit3 ("L"-act)
I SW input selector bit2 ("L"-act)
I SW input selector bit1 ("L"-act)
I SW input selector bit0 ("L"-act)
— Ground
O Communicate with CONT
I Communicate with CONT
I Push SW "DIGITAL/ANALOG" ("L" = ON)
I Push SW "AUDIO SPLIT" ("L" = on)
I Push SW "2CH" ("L" = on)
I Push SW "MODE+" ("L" = on)
I Push SW "MODE–" ("L" = on)
I Push SW "DOLBY/MPEG/DTS" ("L" = on)
— +5V
I Push SW "EQ-BANK" ("L" = on)
O LED "DIGITAL/ANALOG" (0 = on)
O LED "AUDIO SPLIT" (0 = on)
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Function