参数资料
型号: DS21Q43AT
厂商: DALLAS SEMICONDUCTOR
元件分类: Digital Transmission Controller
英文描述: DATACOM, FRAMER, PQFP128
封装: TQFP-128
文件页数: 59/60页
文件大小: 748K
代理商: DS21Q43AT
DS21Q43A
8 of 60
CONTROL PORT/TEST/SUPPLY PIN LIST Table 1-3
PIN
SYMBOL
TYPE
DESCRIPTION
57
TEST
I
3-State Control for all Output and I/O Pins.
60
CS
I
Chip Select.
58
FS0
I
Framer Select 0 for Parallel Control Port.
59
FS1
I
Framer Select 1 for Parallel Control Port.
61
BTS
I
Bus Type Select for Parallel Control Port.
63
WR
(R/ W )
I
Write Input (Read/Write).
62
RD
(DS)
I
Read Input (Data Strobe).
23
A0
I
Address Bus Bit 0; LSB.
24
A1
I
Address Bus Bit 1.
25
A2
I
Address Bus Bit 2.
26
A3
I
Address Bus Bit 3.
27
A4
I
Address Bus Bit 4.
28
A5
I
Address Bus Bit 5.
29
A6 or ALE (AS)
I
Address Bus Bit 6; MSB or Address Latch Enable (Address Strobe).
30
INT
O
Receive Alarm Interrupt for all Four Framers.
64
MUX
I
Non-Multiplexed or Multiplexed Bus Select.
117
D0 or AD0
I/O
Data Bus Bit 0 or Address/Data Bus Bit 0; LSB.
118
D1 or AD1
I/O
Data Bus Bit 1 or Address/Data Bus Bit 1.
119
D2 or AD2
I/O
Data Bus Bit 2 or Address/Data Bus Bit 2.
120
D3 or AD3
I/O
Data Bus Bit 3 or Address/Data Bus Bit 3.
121
D4 or AD4
I/O
Data Bus Bit 4 or Address/Data Bus Bit 4.
122
D5 or AD5
I/O
Data Bus Bit 5 or Address/Data Bus Bit 5.
123
D6 or AD6
I/O
Data Bus Bit 6 or Address/Data Bus Bit 6.
124
D7 or AD7
I/O
Data Bus Bit 7 or Address/Data Bus Bit 7; MSB.
15
VDD
-
Positive Supply Voltage.
47
VDD
-
Positive Supply Voltage.
79
VDD
-
Positive Supply Voltage.
111
VDD
-
Positive Supply Voltage.
14
VSS
-
Signal Ground.
46
VSS
-
Signal Ground.
78
VSS
-
Signal Ground.
110
VSS
-
Signal Ground.
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