Ic4: Yss918-F - Yamaha RX-V795a Service Manual

RX-V795a/RDS/HTR-5170
IC4 : YSS918-F
Digital Pro-Logic Decoder
No. Name I/O
1 VDD1
2 RAMCEN O
3 RAMA16 O
4 RAMA15 O
5 SDIB0 Itp
6 SDIB1 Itp
7 SDIB2 Itp
8 XI Ic
9 XO O
10 VSS
11 AVDD
12 SDIB3 Itp
13 TEST
14 TEST
15 OVFB O
16 DTSDATA O
17 AC3DATA O
18 SDOB3 O
19 CPO A
20 AVSS
21 VDD2
22 SDOA2 O
23 SDOA1 O
24 SDOA0 O
25 RAMA14 O
26 RAMA13 O
27 RAMA12 O
28 RAMA11 O
29 RAMA10 O
30 VSS
31 VDD1
32 OPORT0 O
33 OPORT1 O
34 OPORT2 O
35 OPORT3 O
36 OPORT4 O
37 OPORT5 O
38 OPORT6 O
39 OPORT7 O
40 VSS
41 VDD2
42 RAMA9 O
43 RAMA8 O
44 RAMA7 O
45 SDOB2 O
46 SDOB1 O
47 SDOB0 O
48 SDBCK1 Itp
49 SDWCK1 Itp
50 VSS
51 VDD2
29
+5V terminal (for terminal section)
Chip enable terminal for external SRAM
Address terminal 16 for external SRAM
Address terminal 15 for external SRAM
PCM input terminal 0 to Sub DSP
PCM input terminal 1 to Sub DSP
PCM input terminal 2 to Sub DSP
Crystal oscillator connecting terminal (12.288MHz)
Crystal oscillator connecting terminal
Ground terminal (for terminal section)
+3.3V terminal (for PLL circuit)
PCM input terminal 3 to Sub DSP
Test terminal (normally unconnected)
Test terminal (normally unconnected)
Sub DSP overflow detect terminal
DTS data detect terminal
AC-3 data detect terminal
PCM output terminal for Sub DSP
PLL output terminal, connected to external analog filter
Ground terminal (for PLL circuit)
+3.3V terminal (for inner circuit)
PCM output terminal (AC-3/DTS : C/LFE output, Pro Logic : C/S output)
PCM output terminal (AC-3/DTS : LS/RS output, Pro Logic : Lt/Rt output)
PCM output terminal (AC-3/DTS/Pro Logic : L/R output)
Address terminal 14 for external SRAM
Address terminal 13 for external SRAM
Address terminal 12 for external SRAM
Address terminal 11 for external SRAM
Address terminal 10 for external SRAM
Ground terminal (for inner circuit)
+5V terminal (for terminal section)
General purpose output terminal
General purpose output terminal
General purpose output terminal
General purpose output terminal
General purpose output terminal
General purpose output terminal
General purpose output terminal
General purpose output terminal
Ground terminal (for inner circuit)
+3.3V terminal (for inner circuit)
Address terminal 9 for external SRAM
Address terminal 8 for external SRAM
Address terminal 7 for external SRAM
PCM output terminal for Sub DSP
PCM output terminal for Sub DSP
PCM output terminal for Sub DSP
Bit clock input terminal for SDOA/SDIB/SDOB signal
Word clock input terminal for SDOA/SDIB/SDOB signal
Ground terminal (for terminal section)
+3.3V terminal (for inner circuit)
Function