參數(shù)資料
型號: TTSI4K32T3BAL
英文描述: 4096-Channel, 32-Highway Time-Slot Interchanger
中文描述: 4096通道,32道時(shí)隙交換器
文件頁數(shù): 49/64頁
文件大?。?/td> 1105K
代理商: TTSI4K32T3BAL
Data Sheet
June 2000
TTSI4K32T
4096-Channel, 32-Highway Time-Slot Interchanger
49
Lucent Technologies Inc.
Configuration Register Architecture
(continued)
Table 37. Receive Highway Configuration Register (Byte 1) (0x1801 + 4i)
*
* i = the receive highway number.
Table 38. Receive Highway Configuration Register (Byte 2)
(0x1802 + 4i)
*
* i = the receive highway number.
Bit
7
6—0
Symbol
RTSOFF
[6—0]
Name/Description
Reserved.
Read as 0.
Receive Highway Time-Slot Offset[6
0].
RTSOFF is used to offset the begin-
ning of an incoming frame by the indicated number of time slots (bytes). If no
time-slot offsetting is required, these bits should be set to zero. The following
table shows the range of offsets for the different highway data rates.
Highway Data Rate Time-Slot Offset Range
2.048 Mbits/s 0—31
4.096 Mbits/s 0—63
8.192 Mbits/s 0—127
Note:
A time slot is always 8 bits. A bit period is relative to the highway data rate
set for each highway.
RTSOFF, RBITOFF, and RFBOFF are used in conjunction to define the start of
the incoming frame. The values are added together to position the sampling of
time slot 0, bit 0.
Bit
7—3
2
Symbol
LC
Name/Description
Reserved.
Read as 0.
Loopback Control.
This bit is used to control the internal loopback of the TXD
highway to the corresponding RXD highway. When set to 1, the TXD highway as
input to this RXD highway. The transmit highway involved will be internally
looped back to the matching receive highway so that the TXD[i] output is now the
input to RXD[i]. When a particular highway is in this mode, the receive highway
offset must be 1/2-bit greater than the corresponding transmit highway offset.
When LC is cleared to 0, the RXD pin is the source of highway data (default).
Receive Highway Data Rate[1—0].
HDR1
HDR0
0
0
2.048 Mbits/s (default)
0
1
4.096 Mbits/s
1
0
8.192 Mbits/s
1
1
0.000 Mbits/s (idle, not receiving data)
1—0
HDR[1—0]
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PDF描述
TTSI4K32T 4096-Channel, 32-Highway Time-Slot Interchanger(4096通道、32路干線時(shí)隙交換機(jī))
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