Sony DPA-300 Service Manual page 88

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Pin No. Pin Name I/O
41 ~ 44 SA9 ~ SA12 I
45 NC —
46 ~ 48 SA13 ~ SA15 I
49 ~ 52 NC —
53 VSS —
54 IRBUSY O
55 BUFFDIR O
56 BUFFEND O
57 VDD —
58 NC —
59 VSS —
60, 61 SO0, SO1 I/O
62 VDD —
63 NC —
64, 65 SO2, SO3 I/O
66 VSS —
67 NC —
68, 69 SO4, SO5 I/O
70 VDD —
71, 72 SO6, SO7 I/O
73 VSS —
TE
L 13942296513
74 ~ 77 NC —
78 VDD —
79 DRQX I/O
80 DRQY O
81 NC —
82 IRQUART O
83 IRQSCC+ O
84 VSS —
85 NC —
86 SETUP I
87 VSS —
88 IRDISABLE I
89 VDD —
90 CLK I
91 NC —
92 AEN I
93 IOR I
94 IOW I
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Address bus input (Not used)
Not used
Address bus input (Not used)
Not used
Ground
IR controller status signal output. "H": Under loading
Buffer direction command output (Not used)
Buffer enable signal output (Not used)
+5 V power supply
Not used
Ground
Data bus input/output
+5 V power supply
Not used
Data bus input/output
Ground
Not used
Data bus input/output
+5 V power supply
Data bus input/output
Ground
Not used
+5 V power supply
DMA send request output to gate array
DMA receive request output (Not used)
Not used
Interrupt request output to gate array. This output occurs when UART-A is "H"
Interrupt request output to gate array. This output occurs when the WRAP bit of either SCC+ or
UART-B is "H"
Ground
Not used
Access enable input to POS register. "L": Active
Ground
The internal IR function is disabled when "L" (Fixed to "H")
+5 V power supply
Clock input (36.864 MHz)
Not used
Address enable input
I/O read signal input
I/O write signal input
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Description
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