Sony XES-Z50 Service Manual page 72

Pin No. Pin Name
38 A2
39 A3
40 A4
41 A5
42 A6
43 A7
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 MUTE
59 SMUTE
60 EMP-O
61 NCO
62 STBY
63 SYSRES
64 BU-IN
65 VSS
66 X-IN
67 EX-IN
68 VDD
69 AS
70 RD
71 HWR
72 LWR
73 MD0
74 MD1
75 MD2
76 AVDD
77 AVREF
78 NIH
I/O
O
O
O
Address signal output to the flash memory (IC401, 402)
O
O
O
— Ground terminal
O
O
O
O
O
O
Address signal output to the flash memory (IC401, 402)
O
O
O
O
O
O
— Ground terminal
Relay drive signal output for the speaker protect relay (RY1101, 1201, 1301)
O
At output of "L", the relay is turned on to apply muting
O
Soft mute control signal output to the electrical volume (IC1106, 1206, 1306) "H": mute on
O
Emphasis control signal output to the digital filter (IC1101, 1201, 1301) "H": emphasis on
O
System clock signal output terminal Not used (open)
I Standby signal input terminal Fixed at "H" in this set
System reset signal input from the reset signal generator (IC303) and bus interface (IC306) (for
I SONY bus) "L": reset For several hundreds msec. after the power supply rises, "L" is input,
then it changes to "H"
I
Backup power supply detect signal input terminal (used also to reset standby)
—
Ground terminal
I
System clock input terminal (14.74 MHz)
I
System clock input terminal (14.74 MHz)
— Power supply terminal (+5V)
O
Address strobe signal output terminal Not used (open)
Strobe signal output for data reading to the digital signal processor (IC101, 201 CXD2711Q)
O
and flash memory (IC401, 402)
Strobe signal output for upper byte data writing to the digital signal processor (IC101, 201
O
CXD2711Q) and flash memory (IC402)
O
Strobe signal output for lower byte data writing to the flash memory (IC401)
I Input terminal for setting microcomputer operation mode (fixed at "L")
I
Input terminal for setting microcomputer operation mode (fixed at "H")
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 Fixed at "H" in this set
Function
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