參數(shù)資料
型號(hào)： MT90823AL1
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 路由/交換
英文描述： 3V Large Digital Switch
中文描述： TELECOM, DIGITAL TIME SWITCH, PQFP100
封裝： 14 X 20 MM, 2.80 MM HEIGHT, LEAD FREE, MO-112CC, MQFP-100
文件頁(yè)數(shù)： 15/46頁(yè)
文件大?。?/td> 643K
代理商： MT90823AL1
MT90823
Data Sheet
15
Zarlink Semiconductor Inc.
Table 4 - Internal Register and Address Memory Mapping
Table 5 - Output High Impedance Control
If the LPBK bit is low, the loopback feature is disabled. For proper per-channel loopback operation, the contents of
the frame delay offset registers must be set to zero.
A7
(Note 1)
A6
A5
A4
A3
A2
A1
A0
Location
0
0
0
0
0
0
0
0
Control Register, CR
0
0
0
0
0
0
0
1
Interface Mode Selection Register, IMS
0
0
0
0
0
0
1
0
Frame Alignment Register, FAR
0
0
0
0
0
0
1
1
Frame Input Offset Register 0, FOR0
0
0
0
0
0
1
0
0
Frame Input Offset Register 1, FOR1
0
0
0
0
0
1
0
1
Frame Input Offset Register 2, FOR2
0
0
0
0
0
1
1
0
Frame Input Offset Register 3, FOR3
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
.
1
1
0
0
.
1
1
0
0
.
1
1
0
0
.
1
1
0
1
.
0
1
Ch 0
Ch 1
.
Ch 30
Ch 31 (Note 2)
1
1
1
1
1
0
0
0
0
0
1
1
1
1
1
0
0
.
1
1
0
0
.
1
1
0
0
.
1
1
0
0
.
1
1
0
1
.
0
1
Ch 32
Ch 33
.
Ch 62
Ch 63 (Note 3)
1
1
1
1
1
1
1
1
1
1
0
0
.
1
1
0
0
.
1
1
0
0
.
1
1
0
0
.
1
1
0
0
.
1
1
0
1
.
0
1
Ch 64
Ch 65
.
Ch 126
Ch 127 (Note 4)
Notes:
1. Bit A7 must be high for access to data and connection memory positions. Bit A7 must be low for access to registers.
2. Channels 0 to 31 are used when serial interface is at 2Mb/s mode.
3. Channels 0 to 63 are used when serial interface is at 4Mb/s mode.
4. Channels 0 to 127 are used when serial interface is at 8Mb/s mode.
OE bit in Connection
Memory
ODE pin
OSB bit in IMS register
ST-BUS Output Driver Status
0
Don’t Care
Don’t Care
Per Channel
High Impedance
1
0
0
High Impedance
1
0
1
Enable
1
1
Don’t care
Enable
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