System Control Pin Function (Mb-75 Board Ic090) - Sony dvp-s3000 Service Manual

5-8. SYSTEM CONTROL PIN FUNCTION (IC090 on MB-80 Board (2/12))
Pin No. Pin Name I/O
1 IRQ6 I Input of interrupt from CXD1186, CXD8663Q, CXD8669Q
2 IRQ7 I Input of interrupt from CXD1900
3 VSS – Digital ground
4–11 AD0–7 I/O Data bus AD0-AD7
12 VSS – Digital ground
13,14 AD8–9 I/O Data bus AD8, AD9
15 VCC – Digital power supply
16–21 AD10–15 I/O Data bus AD10-AD15
22 VSS – Digital ground
23–30 A0–7 O Address bus A0-A7
31 VSS – Digital ground
32–39 A8–15 O Address bus A8-A15
40 VSS – Digital ground
41,42 A16–17 O Address bus A16, A17
43 VCC – Digital power supply
44–47 A18–21 O Address bus A18-A21
48 CS0 O Chip select signal for external ROM
49 CS1 O Chip select signal for external RAM
50 CS2 – Not used
51 CS3 O Chip select signal for RAM common to drive controller
52 VSS – Digital ground
53 PA0 O Not used
54 PA1 O Output of squeeze mode
55 CS6 O Output of chip select signal to external device
56 WAIT I Input of wait signal
57 WR O Output of write signal
58 PA5 O Output of IF controller serial data control
59 RD O Output of read signal
60 PA7 O Not used
61 VSS – Digital ground
62 PA8 O Output of serial select signal to L chip
63 PA9 O Output of serial select signal to CXD1914
64 PA10 O Output of serial select signal to audio DAC
65 PA11 O Output of error free signal
Function Pin No. Pin Name I/O
66 IRQ0 I Input of interrupt signal from SP, BFD, drive controller
67 DREQ0 I Input of DMA request from CK
68 IRQ2 I Input of VSYNC (FID) interrupt signal
69 IRQ3 I Input of interrupt signal from CK, DSP5600
70 VCC – Digital power supply
71 CK O Output of internal clock
72 VSS – Digital ground
73 EXTAL – 20MHz crystal connection pin
74 XTAL – 20MHz crystal connection pin
75 VCC – Digital power supply
76 NMI – Not used
77 VCC – Digital power supply
78 WDTOVF – Not used
79 RES I Input of reset signal
80 MD0 I Input of mode select 0 (fixed to "1")
81 MD1 I Input of mode select 1 (fixed to "0")
82 MD2 I Input of mode select 2 (fixed to "0")
83,84 VCC – Digital power supply
85 AVCC – Analog power supply
86 AVREF – Reference power supply
87 PC0 I Input of DIAG mode select signal
88 PC1 I Input of EMPH signal from CXD2545
89 PC2 I Input of request from drive controller
90 PC3 I Input of request from DSP56000
91 AVSS – Analog ground
92 PC4 I Input of FID signal from CXD1914
93 PC5 I Input of request from I/F controller
94 PC6 I Input of control 1
95 PC7 I Input of control 2
96 VSS – Digital ground
97 PB0 O Output of request to I/F controller
98 PB1 O Output of request to drive controller
99 VCC – Digital power supply
100 PB2 O Output of clock system switching (DVD/CD)
Function