Yamaha RX-SL80 Service Manual page 40

RX-SL80
• Key Input (A-D) Pull-Up Resistance 10 k-ohms
ohm 0.0 +1.0k
V ~0.3 ~1.0
ADKEY0
ENTER INPUT
(94Pin, AN2)
40
+1.5k +3.3k
~1.8 ~2.4
DSP TUNER
IC307: YSS930-SZ (DIGITAL P.C.B)
DSP
VSS 76
RAMA11 77
RAMA12 78
RAMA13 79
RAMA14 80
RAMA15 81
RAMA16 82
RAMA17 83
VDD1 84
/CS 85
SO 86
SI 87
SCK 88
/IC 89
SDWCK 90
SDBCK 91
SDI7 92
SDI6 93
SDI5 94
SDI4 95
SDI3 96
SDI2 97
SDI1 98
SDI0 99
VDD2 100
MICROPROCESSOR
INTERFACE
PROGRAM
RAM
CONTROL REGISTER 50 bit * 1024 word
CONTROL
SIGNALS
SDBCK
SDWCK
SDI0
SDI1
SDI2
SDI3
SDI4
SDI5
SDI6
SDI7
DSP INTERNAL
OPERATING CLOCK
CK (30.72~40.96MHz)
EXTERNAL RAM
INTERFACE
PLL
50 VDD2
49 RAMD9
48 RAMD8
47 RAMD7
46 RAMD6
45 RAMD5
44 RAMD4
43 RAMD3
42 RAMD2
41 RAMD1
40 RAMD0
39 VDD1
38 IOPORT19
37 IOPORT18
36 IOPORT17
35 IOPORT16
34 SDO7
33 SDO6
32 SDO5
31 SDO4
30 SDO3
29 SDO2
28 SDO1
27 SDO0
26 VSS
COEFFICIENT ADDRESS
RAM RAM
16 bit * 1024 word 17 bit * 256 word
SDO0
SDO1
SDO2
SDO3
32 bit DSP Core
SDO4
SDO5
SDO6
SDO7