Yamaha DVD-S2300MK2 Service Manual page 36

DVD-S2300MK2
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IC823: M30626FHPFP (RS-232C P.C.B.)
16bit µ-COM (SUB CPU)
Pin No. u-com port
1 ANEX1/SOUT4
2 ANEX0/CLK4
3 DA1/TB4IN
4 DA0/TB3IN
5 TB2IN/SOUT3
6 TB1IN/SIN3
7 TB0IN/CLK3
8 BYTE
9 CNVss
10 XCIN
11 XCOUT
12 /RESET
13 XOUT
14 VSS
15 XIN
16 Vcc
17 /NMI
18 /INT2
19 /INT1
20 /INT0
21 TA4IN/U
22 TA4OUT/U
23 TA3IN
24 TA3OUT
TE
L 13942296513
25 TA2IN/W
26 TA2OUT/W
27 TA1IN/V
28 TA1OUT/V
29 RxD2/SCL/TA0IN/TB5IN
30 TxD2/SDA/TA0OUT TxD2/SDA/TA0OUT Output
31 TxD1
32 RxD1
33 CLK1
34 CLKS1/CST0/RTS1/CTS1 CLKS1/CST0/RTS1/CTS1 Input
35 TxD0
36 RxD0
37 CLK0
38 /RTS0/CTS0
39 CLKOUT/RDY
40 ALE
41 /HOLD
42 /HLDA
43 BCLK
44 /RD
45 /BHE/WRH
46 /WR/WRL
47 /CS3
48 /CS2
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49 /CS1
50 /CS0
51 A19
52 A18
.
53 A17
54 A16
55 A15
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Definition Direction
ANEX1/SOUT4 Output N.C.
ANEX0/CLK4 Output N.C.
DA1/TB4IN Output N.C.
DA0/TB3IN Output N.C.
TB2IN/SOUT3 Output N.C.
TB1IN/SIN3 Output N.C.
TB0IN/CLK3 Output N.C.
BYTE Input Flash ROM writing control terminal
CNVss Input Flash ROM writing control terminal
XCIN Output N.C.
XCOUT Output N.C.
/RESET Input Reset signal input
XOUT Output 10MHz clock output
VSS GND
XIN Input 10MHz clock input
Vcc +3.3v
/NMI Input Mode select : L
/INT2 Output N.C.
/IR Input Remote control signal input
/INT0 Input Chip select input from Panel_CPU
TA4IN/U Output N.C.
TA4OUT/U Output N.C.
TA3IN Output N.C.
TA3OUT Output N.C.
TA2IN/W Output N.C.
TA2OUT/W Output N.C.
TA1IN/V Output N.C.
TA1OUT/V Output N.C.
RxD2/SCL/TA0IN/TB5IN Output N.C.
N.C.
TxD1 Output Data signal output to RS-232C driver
RxD1 Input Data signal input from RS-232C driver
CLK1 Output Data signal output to RS-232C driver
Data signal input from RS-232C driver
TxD0 Output Data signal output to Panel_CPU
RxD0 Input Data signal input from Panel_CPU
CLK0 Input Clock signal input from Panel_CPU
/RTS0/CTS0 Output N.C.
CLKOUT/RDY Output N.C.
ALE Output N.C.
/HOLD Input Flash ROM writing control terminal
/HLDA Output N.C.
BCLK Output N.C.
/RD Output N.C.
/BHE/WRH Output N.C.
/WR/WRL Input Flash ROM writing control terminal
/CS3 Output N.C.
/CS2 Output N.C.
/CS1 Output N.C.
/CS0 Output N.C.
x ao
y
A19 Output N.C.
A18 Output N.C.
i
A17 Output N.C.
A16 Output N.C.
A15 Output N.C.
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