Sony MDP-V10 Service Manual page 77

Pin No. Pin Name
A5
41
42 A6
43 A7
44 VSS
A8
45
46 A9
47 A10
48 A11
49 A12
50 A13
51 A14
52 A15
A16
53
54 A17
55 A18
56 A19
57 VSS
58 WAIT
59 VCD MUTE
60 CHECK LED
61 SYSCLK
62 STBY
63 RST
64 E2P BUSY
65 VSS
EXTAL
66
67 XTAL
68 VCC
69 AS
RD
70
71 HWR
72 LWR
73 MD0
74 MD1
75 MD2
76 AVCC
VREF
77
78 NT PAL AUTO SEL
79 –––––
80 –––––
I/O
O
Address bus output
O Address bus output
O Address bus output
– Ground
O
Address bus output
O Address bus output
O Address bus output
O Address bus output
O Address bus output
O Address bus output
O Address bus output
O Address bus output
O
Address bus output
O Not used
O Chip select signal output
O Chip select signal output
– Ground
I Wait pin. Requests the insertion of wait state when accessing the external address space.
O VIDEO DAC output mute control ("H": Mute. Sync is not muted.)
O LED drive signal output for system check
O System clock output (Not used)
I
Standby pin. When "L", the hardware standby mode is set.
I Mode controller reset ("L": Reset)
I EEPROM write. "H": READY, L: BUSY.
– Ground
I
Connected to the crystal oscillator. Clock 8 MHz.
O Connected to the crystal oscillator. Clock 8 MHz.
– Power supply REG +5V
O Address strobe. When "L", an address on the address bus is valid.
O
Read pin. When "L", the external address space is in a read condition.
High write pin. When "L", the external address space is in a write condition, and the data bus is valid (bus
O
width: 8-bit).
O Not used
I Mode pin (Fixed at "H")
I Mode pin (Fixed at "L")
I Mode pin (Fixed at "L")
– AD conversion power supply, REG +5V
I
AD conversion reference voltage input, REG +5V
I
NTSC/PAL auto select (Video-CD output mode)
I AD input (Not used)
I AD input (Not used)
Function
Sets the microcontroller operation mode to mode 1 (Address space: 1M
bytes, 8-bit data bus).
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