Sony XES-Z50 Service Manual page 58

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Pin No. Pin Name
44 VSS
45 A8
46 A9
47 A10
48 A11
49 A12
50 A13
51 A14
52 A15
53 A16
54 A17
55 A18
56 A19
57 VSS
58 WAIT
59 BREQ
60 BACK
61 ø
62 STBY
63 SYSRES
TE
L 13942296513
64 BU-IN
65 VSS
66 EXTAL
67 XTAL
68 VDD
69 AS
70 RD
71 HWR
72 LWR
73 MD0
74 MD1
75 MD2
76 AVDD
77 AVREF
78 AN0
79 AN1
80 AN2
81 AN3
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82 AN4
83 AN5
84 BU-IN
.
85 PBS
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I/O
—
Ground terminal
O
O
O
O
O Address signal output to the flash memory (IC804) and S-RAM (IC805)
O
O
O
O
O
Address signal output to the flash memory (IC804)
O Address signal output to the flash memory (IC804)
Address signal output terminal This set uses the OR level with chip select signal of ROM-CS
O
(pin (¡) as a chip enable signal for the flash memory (IC804)
—
Ground terminal
I
Wait signal input terminal (fixed at "H")
O
Communication request signal output terminal Not used (open)
O Acknowledge output terminal Not used (open)
O
System clock output terminal Not used (open)
I
Hardware standby signal input terminal (fixed at "H")
System reset signal input from the system controller (IC501) and reset signal generator (IC504)
I
"L": reset For several hundreds msec. after the power supply rises, "L" is input, then it
changes to "H"
I
Backup power supply detection signal input from the bus interface (IC503) (for SONY bus)
—
Ground terminal
I
System clock input terminal (14.745 MHz)
I System clock input terminal (14.745 MHz)
—
Power supply terminal (+5V)
O
Address strobe signal output terminal Not used (open)
O
Strobe signal output for data reading to the flash memory (IC804) and S-RAM (IC805)
Strobe signal output for data writing to the flash memory (IC804) and upper byte data writing
O
strobe signal output to the S-RAM (IC805)
Strobe signal output for data writing to the flash memory (IC804) and lower byte data writing
O
strobe signal output to the S-RAM (IC805)
I Input terminal for setting microcomputer operation mode (fixed at "L")
I
Input terminal for setting microcomputer operation mode (fixed at "L")
I
Input terminal for setting microcomputer operation mode (fixed at "H")
—
Power supply terminal (+5V) (for A/D conversion)
I Reference voltage input terminal (+5V) (for A/D conversion)
I
I
I
Input terminal for the test (fixed at "L")
I
I
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y
I
Input terminal for the test (fixed at "L")
I
Backup power supply detection signal input from the bus interface (IC503) (for SONY bus)
i
I Parking brake detection signal input terminal Not used (fixed at "L")
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Function
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