Lsi Pin Discription - Yamaha EMX 620 Service Manual

EMX620
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LSI PIN DISCRIPTION

YSS234 (XN299A00) Digital Sound Processor
PIN
NAME I/O FUNCTION
NO.
1 MD4 I/O
2 MD3 I/O
3 MD0 I/O External RAM interface data
4 MD1 I/O
5 MD2 I/O
6 MCKO O Master clock output
7 XO O Crystal oscillator connection
8 XI I Crystal oscillator connection
9 ER0 I
10 ER1 I Eary refrection preset select
11 ER2 I
12 REV0 I
13 REV1 I Effect select
14 REV2 I
15 MUTEN I DC D+5V
16 ICN I Initial clear
17 PRG I DC D+5V
18 MODE I Preset mode (H=DC +5V)
19 VSS - Ground
20 AVSS - Ground
21 CVA - N.C.
22 AORL O N.C.
23 AORR O N.C.
24 CHL I Sample hold capacitor connection
25 AIL I Lch ADC input
26 VDD - DC D+5V
27 AIR I Rch ADC input
28 CHR I Sample hold capacitor connection
29 AOFL O Lch DAC output
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L 13942296513
30 AOFR O Rch DAC output
31 AVDD - DC A+5V
32 CVB I Rch midpoint voltage
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NAME I/O FUNCTION
33 AVDD - DC A+5Vs bus
34 VDD - DC D+5V
35 TST0 - DC D+5V
36 TST1 - DC D+5V
37 DOEN - DC D+5V
38 SDO1 O N.C.
39 SDO0 O N.C.
40 WC O N.C.
41 BCO O N.C
42 MA0 O
43 MA1 O
44 MA2 O
45 MA3 O
46 MA4 O
47 MA5 O External RAM interface address
48 MA6 O
49 MA7 O
50 MA12 O
51 MA14 O
52 VSS - Ground
53 MA10 O
54 MA011 O
55 MA09 O External RAM interface address
56 MA8 O
57 MA13 O
58 VDD - DC D+5V
59 WEN I Write enable
60 OEN I Output enable
Q Q
61 CEN I Chip select
3 6 7 1 3
62 MD7 I/O
63 MD6 I/O External RAM interface data
64 MD5 I/O
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9 4 2 8
1 5 0 5 8 2 9 9 4
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9 9
2 8 9 9