Yamaha DSP-A5 Service Manual page 25

QQ
3 7 63 1515 0
IC4 : YSS918D-F (AC3D2av)
DSP + AC-3(Dolby Digital)/ Pro Logic/ DTS Digital Surround Decoder
TE
L 13942296513
CONTROL
SIGNALS
/SDBCK0 57
SDBCK0 83
SDWCK0 82
84
SDIA0
SDIA1 85
SURENC 56
KARAOKE 55
54
MUTE
CRC 53
www
AC3DATA 17
DTSDATA 16
NONPCM 52
.
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80 79 78 77 76 75 74
VDD
81
SDWCK0
82
SDBCK0
83
SDIA0
84
SDIA1
85
RAMA1
86
RAMA0
87
RAMWEN
88
RAMOEN
89
VSS
90
VDD
91
IPORT7
92
IPORT6
93
IPORT5
94
IPORT4
95
IPORT3
96
IPORT2
97
IPORT1
98
IPORT0
99
VSS
100
1 2 3 4 5 6 7
~
MICROPROCESSOR
INTERFACE
CONTROL REGISTERS
SDI : SERIAL DATA INPUT
SDO : SERIAL DATA OUTPUT
24x24
MAIN DSP
AC-3/
INPUT
BUFFER PRO LOGIC/
DTS
DECODER
STREAM0~7
OPERATING
CLOCK (25MHz)
DELAY
PLL RAM
x ao
y
i
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8
73 72 71 70 69 68 67 66 65 64 63 62 61
TOP VIEW
8 9 10 11 12 13 14 15 16 17 18 19 20 21
Q Q
3 6 7 1 3
~
CONTROL
SIGNALS
SDIBCKSEL
L,R
Ls,Rs
C,LFE
ERAMUSE
u163
.
2 9 9 4 2 8
60 59 58 57 56 55 54 53 52 51
50 PVSS
49 SDWCK1
48 SDBCK1
SDOB0
47
SDOB1
46
SDOB2
45
RAMA7
44
RAMA8
43
42 RAMA9
41 VDD2
40 VSS
OPORT7
39
OPORT6
38
OPORT5
37
OPORT4
36
OPORT3
35
OPORT2
34
OPORT1
33
OPORT0
32
VDD1
31
22 23 24 25 26 27 28 29 30
1 5 0 5 8 2 9 9 4
COEFFICIENT
PROGRAM
RAM
SDIBCKSEL SDOBCKSEL
24x16
SUB DSP
EXTERNAL RAM
INTERFACE DATA
RAM
m
co
~
DSP-A5
9 9
2 8 9 9
48 SDBCK1
49 SDWCK1
47 SDOB0
46 SDOB1
45 SDOB2
18 SDOB3
15 OVFB
24