參數(shù)資料
型號(hào)： TTSI1K16T
英文描述： 1024-Channel, 16-Highway Time-Slot Interchanger
中文描述： 1024通道，16道時(shí)隙交換器
文件頁數(shù)： 18/64頁
文件大?。?/td> 1110K
代理商： TTSI1K16T
TTSI1K16T
1024-Channel, 16-Highway Time-Slot Interchanger
Preliminary Data Sheet
February 1999
18
Lucent Technologies Inc.
Highway Data Rate Selection
The highway data rate for a particular transmit or receive highway is selected by setting HDR[1—0] (bits 1—0) in
byte 2 of the highway configuration registers. All of the highways in the TTSI1K16T are grouped into pairs. RXD0 is
paired with RXD1, RXD2 is paired with RXD3, . . . , and RXD14 is paired with RXD15. Similarly, TXD0 is paired
with TXD1, TXD2 is paired with TXD3, . . . , and TXD14 is paired with TXD15.
The maximum combined bandwidth that each pair can handle is 8.192 Mbits/s. If the programmed bandwidth of a
pair exceeds 8.192 Mbits/s, one or both highways will be set to idle automatically. The register contents will not be
altered to reflect this, but that particular receive or transmit highway will not carry any traffic.
Table 6 shows the valid Rx highway data rate options for a particular Rx highway pair.
Table 6. Rx Highway Data Rate Options
* i = 0, 1, 2, . . . , 7.
Table 7 shows the valid Tx highway data rate options for a particular Tx highway pair.
Table 7. Tx Highway Data Rate Options
* i = 0, 1, 2, . . . , 7.
To meet the 8.192 Mbits/s bandwidth requirement for a transmit highway pair, a transmit highway may have to be
disabled. This is done by setting its data rate to 0.000 Mbits/s and not by setting its XE bit to 0 in the transmit con-
figuration register.
RXD[2i] Data Rate (Mbits/s)
*
0.000
0.000
0.000
0.000
2.048
2.048
2.048
4.096
4.096
4.096
8.192
RXD[2i + 1] Data Rate (Mbits/s)
*
0.000
2.048
4.096
8.192
0.000
2.048
4.096
0.000
2.048
4.096
0.000
TXD[2i] Data Rate (Mbits/s)
*
0.000
0.000
0.000
0.000
2.048
2.048
2.048
4.096
4.096
4.096
8.192
TXD[2i + 1] Data Rate (Mbits/s)
*
0.000
2.048
4.096
8.192
0.000
2.048
4.096
0.000
2.048
4.096
0.000
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