參數(shù)資料
型號(hào)： MT8985AE1
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 路由/交換
英文描述： Enhanced Digital Switch
中文描述： TELECOM, DIGITAL TIME SWITCH, PDIP40
封裝： LEAD FREE, PLASTIC, MS-011AC, DIP-40
文件頁(yè)數(shù)： 8/26頁(yè)
文件大小： 568K
代理商： MT8985AE1
MT8985
Data Sheet
8
Zarlink Semiconductor Inc.
Figure 4 - Control Register Bits
x = Don’t care
Initialization of the MT8985
On initialization or power up, the contents of the Connection Memory High can be in any state. This is a potentially
hazardous condition when multiple MT8985 ST-BUS outputs are tied together to form matrices, as these outputs
may conflict. The ODE pin should be held low on power up to keep all outputs in the high impedance condition.
BIT
NAME
DESCRIPTION
7
SM
Split Memory.
When 1, all subsequent reads are from the Data Memory and writes are to the
Connection Memory Low, except when the Control Register is accessed again. The Memory Select
bits need to be set to specify the memory for the operations. When 0, the Memory Select bits specify
the memory for subsequent operations. In either case, the Stream Address Bits select the subsection
of the memory which is made available.
6
ME
Message Enable.
When 1, the contents of the Connection Memory Low are output on the Serial
Output streams except when in High Impedance. When 0, the Connection Memory bits for each
channel determine what is output.
4-3
MS1-MS0
Memory Select Bits.
The memory select bits operate as follows:
0-0 - Not to be used
0-1 - Data Memory (read only from the CPU)
1-0 - Connection Memory Low
1-1 - Connection Memory High
2-0
STA2-0
Stream Address Bits 2-0.
The number expressed in binary notation on these bits refers to the input
or output ST-BUS stream which corresponds to the subsection of memory made accessible for
subsequent operations.
SM
ME
X
MS1
MS0
STA2
STA1
STA0
7
6
5
4
3
2
1
0
相關(guān)PDF資料
PDF描述
MT8985AL Enhanced Digital Switch
MT8985AP Enhanced Digital Switch
MT8985APR Enhanced Digital Switch
MT8985APR1 Enhanced Digital Switch
MT8985AP1 Enhanced Digital Switch
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MT8985AL 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays 制造商:Zarlink Semiconductor Inc 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays
MT8985AL1 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44MQFP - Trays
MT8985AP 制造商:Microsemi Corporation 功能描述: 制造商:Mitel Networks Corporation 功能描述: 制造商:MITEL 功能描述:
MT8985AP1 制造商:Microsemi Corporation 功能描述:SWIT FABRIC 256 X 256 16.384MBPS 5V 44PLCC /BAKE/DRYPACK - Rail/Tube 制造商:Microsemi Corporation 功能描述:ENHANCED DIGITAL SWITCH 制造商:Zarlink Semiconductor Inc 功能描述:ENHANCED DIGITAL SWITCH
MT8985APR 制造商:Microsemi Corporation 功能描述:
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