Yamaha DSP-E800 Service Manual page 28

DSP-E800
IC4 : YSS918D-F (AC3D2av)
DSP + AC-3(Dolby Digital)/ Pro Logic/ DTS Digital Surround Decoder
No. Name I/O
51 VDD2
52 NONPCM
53 CRC
54 MUTE
55 KARAOKE
56 SURENC
57 /SDBCK0
58 RAMA6
59 RAMA5
60 VSS
61 RAMA4
62 /IC
63 TEST
64 RAMA3
65 /CSB
66 /CS
67 SO
68 SI
69 SCK
70 RAMA2
71 VDD1
72 RAMD0
73 RAMD1
74 RAMD2
75 RAMD3
76 RAMD4
77 RAMD5
78 RAMD6
79 RAMD7
80 VSS
81 VDD2
82 SDWCK0
83 SDBCK0
84 SDIA0
85 SDIA1
86 RAMA1
87 RAMA0
88 RAMWEN
89 RAMOEN
90 VSS
91 VDD
92 IPORT7
93 IPORT6
94 IPORT5
95 IPORT4
96 IPORT3
97 IPORT2
98 IPORT1
99 IPORT0
100 VSS
25
+3V power supply
O Non-PCM data output terminal, non-PCM data detect output
O CRC output terminal (normally unconnected)
O Mute output terminal, connected to external microcomputer data mute detect input
O Karaoke output terminal (normally unconnected)
O Surround encoder output terminal (normally unconnected)
O Inverted signal of serial data bit clock output terminal 0 (normally unconnected)
O RAM address output terminal 6, connected to external 1M SRAM address
O RAM address output terminal 5, connected to external 1M SRAM address
Ground
O RAM address output terminal 4, connected to external 1M SRAM address
I Initial clear input terminal, connected to external output port expansion IC initial clear output
Test terminal (normally unconnected)
O RAM address output terminal 3, connected to external 1M SRAM address
I Chip select B input terminal,connected to external microcomputer chip enable output 2
I Chip select input terminal, connected to external microcomputer chip enable output 1
O Serial data output terminal, connected to external microcomputer serial data input
I Serial data input terminal, connected to external microcomputer serial data output
I Serial clock input terminal, connected to external microcomputer serial clock output
O RAM address output terminal 2, connected to external 1M SRAM address
+5V power supply
I/O RAM data bus terminal 0, connected to external 1M SRAM data
I/O RAM data bus terminal 1, connected to external 1M SRAM data
I/O RAM data bus terminal 2, connected to external 1M SRAM data
I/O RAM data bus terminal 3, connected to external 1M SRAM data
I/O RAM data bus terminal 4, connected to external 1M SRAM data
I/O RAM data bus terminal 5, connected to external 1M SRAM data
I/O RAM data bus terminal 6, connected to external 1M SRAM data
I/O RAM data bus terminal 7, connected to external 1M SRAM data
Ground
+3V power supply
I Serial data word clock input terminal 0, connected to external DIR5 1fs word clock output
I Serial data bit clock input terminal 0, connected to external DIR5 64fs bit clock output
I Serial data input A terminal 0, AC-3/DTS bit stream (or PCM) data input, connected to external DIR5
audio data output
I Serial data input A terminal 1, connected to external CODEC audio data output
O RAM address output terminal 1, connected to external 1M SRAM address
O RAM address output terminal 0, connected to external 1M SRAM address
O RAM write enable output terminal, connected to external 1M SRAM write enable
O RAM output enable output terminal, connected to external 1M SRAM output enable
Ground
+3V power supply
I Input expansion port terminal 7, DVD coaxial/optical select
I Input expansion port terminal 6, DBS coaxial/optical select
I Input expansion port terminal 5 (normally connected to ground)
I Input expansion port terminal 4, digital sampling frequency select (H:96kHz, L:Non 96kHz)
I Input expansion port terminal 3, Front mix select (H: Outside, L: Inside)
I Input expansion port terminal 2, RF select (H: Exist, L:None)
I Input expansion port terminal 1, DTS select (H: DTS (YSS918), L: Non DTS (YSS908))
I Input expansion port terminal 0, SRAM select (H: 1M, L: 256k)
Ground
Function