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參數(shù)資料
| 型號： | LC895124 |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| 封裝： | SQFP-144 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 83K |
| 代理商： | LC895124 |
Continued from preceding page.
Type: I: Input pin, O: Output pin, B: Bidirectional pin, P: Power supply pin, NC: No connection pin
Note: 1. NC pins must be left open. Do not connect any signal to these pins.
2. Pin names that start with Z are negative-logic signals.
3. VSS0 is the logic system ground and VSS1 is the SCSI interface ground.
4. Applications that use DRAM must insert resistors in the CAS and RAS lines, connect capacitors between these lines and ground, and take any
other measures necessary to prevent undershoot in the DRAM related circuits.
5. Since these circuits include buffers that sink 48 mA, adequate noise prevention measures must be applied.
No. 5240-5/8
LC895124
Pin No.
Symbol
Type
Function
51
TEST3
I
Test pins. These pins must be connected to VSS0.
52
TEST4
I
53
ZRESET
I
LSI reset. The LSI is reset on a 0 input.
54
VDD
P
55
VSS0
P
56
CSCTRL
I
Selects active-high or active-low for the microcontroller CS logic.
57
X1EN
I
Selection pin that must be set to 1 when XTALCK1 is used.
58
XTALCK1
I
SCSI block oscillator circuit input. Selected by X1EN.
59
XTAL1
O
SCSI block oscillator circuit output.
60
ZSWAIT
O
WAIT signal output to the microcontroller
61
VDD
P
62
VSS0
P
63
D0
B
64
D1
B
65
D2
B
66
D3
B
67
D4
B
Microcontroller data signals
68
D5
B
69
D6
B
70
D7
B
71
ZRD
I
Microcontroller data read signal input
72
VSS0
P
73
VDD
P
74
ZWR
I
Microcontroller data write signal input
75
ZCS
I
Input for the register chip select signal from the microcontroller
76
SUA0
I
77
SUA1
I
78
SUA2
I
79
SUA3
I
Register chip select signal from the microcontoller
80
SUA4
I
81
SUA5
I
82
SUA6
I
83
ZINT0
O
Interrupt request output to the microcontroller (ECC side. Set with a register.)
84
ZINT1
O
Interrupt request output to the microcontroller (SCSI side. Set with a register.)
85
NC
86
NC
87
NC
88
NC
89
NC
90
VDD
P
91
VSS1
P
92
NC
93
NC
94
NC
95
DB0
B
SCSI connection
96
VSS1
P
97
DB1
B
SCSI connection
98
DB2
B
99
VSS1
P
100
DB3
B
SCSI connection
Continued on next page.
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