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參數(shù)資料
| 型號： | MT90826 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Quad Digital Switch(四數(shù)字開關(guān)) |
| 中文描述： | 四數(shù)字交換機（四數(shù)字開關(guān)） |
| 文件頁數(shù)： | 19/30頁 |
| 文件大?。?/td> | 131K |
| 代理商： | MT90826 |
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MT90826
19
Table 14 - Connection Memory Bits
Table 15 - SAB and CAB Bits Programming for various interface mode
Bit
Name
Description
15-14
TM1-0
Mode Select Bits.
TM1 TM0
0 0 Variable Throughput Delay mode (Note 1)
1 0 Constant Throughput Delay mode (Note 2)
0 1 Message mode; the contents of the connection memory are
output on the corresponding output channel and stream. Only
the lower byte (bit 7 - bit 0) will be output to the ST-BUS output
pins.
1 1 Bit Error Test mode; the pseudo random test pattern will be
output on the output channel and stream associated with this
location.
Mode Selection
13
OE
Output Enable.
This bit enables the drivers of STo pins on a per-channel
basis. When 1, the STo output driver functions normally. When 0, the STo
output driver is in a high-impedance state.
12-8
SAB4-0
Source Stream Address Bits.
The binary value is the number of the data
stream for the source of the connection.
7-0
CAB7-0
Source Channel Address Bits.
The binary value is the number of the channel
for the source of the connection. When the message mode is enabled, these
entire 8 bits are output on the output channel and stream associated with this
location.
Note 1: The Variable delay is only available for odd number output streams but not for the even number
output streams. Aviod programming the TM0 and TM1 bits to zero in the connection memory when the
destination output streams are STo0, 2, 4, ... , 28 and 30.
Note 2: The constant delay mode is available for all output streams.
Data Rate
SAB4 to SAB0 Bits Used to Determine
the Source Stream of the connection
CAB Bits Used to Determine the Source
Channel of the Connection
8 Mb/s
SAB4 to SAB0 (STi0 to STi31)
CAB6 to CAB0 (128 channel/frame)
16Mb/s
SAB3 to SAB0 (STi0 to STi15)
CAB7 to CAB0 (256 channel/frame)
4 Mb/s & 8 Mb/s
SAB4 to SAB0 (STi0 to STi31)
CAB6 to CAB0 (64 or 128 channel/frame)
16 Mb/s & 8 Mb/s
SAB4 to SAB0 (STi0 to STi19)
CAB7 to CAB0 (128 or 256 channel/frame)
4 Mb/s
SAB4 to SAB0 (STi0 to STi31)
CAB5 to CAB0 (64 channel/frame)
2 Mb/s & 4 Mb/s
SAB4 to SAB0 (STi0 to STi31)
CAB5 to CAB0 (32 or 64 channel/frame)
2 Mb/s
SAB4 to SAB0 (STi0 to STi31)
CAB4 to CAB0 (32 channel/frame)
7
6
5
4
3
2
1
0
8
9
10
11
12
13
CAB
0
CAB
1
CAB
2
CAB
7
CAB
3
CAB
4
CAB
5
SAB
0
SAB
1
SAB
2
14
TM0
15
OE
TM1
6
CAB
3
SAB
SAB
4
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