Yamaha DSP-A5 Service Manual page 25

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