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參數(shù)資料
| 型號： | TTSI4K32T |
| 英文描述： | 4096-Channel, 32-Highway Time-Slot Interchanger |
| 中文描述： | 4096通道，32道時隙交換器 |
| 文件頁數(shù)： | 26/64頁 |
| 文件大?。?/td> | 1105K |
| 代理商： | TTSI4K32T |
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TTSI4K32T
4096-Channel, 32-Highway Time-Slot Interchanger
Data Sheet
June 2000
26
Lucent Technologies Inc.
Low-Latency and Frame-Integrity Modes
(continued)
Frame Integrity
(continued)
The range of Rx and Tx offsets can be independently selected from 0
μ
s to (125 –
)μ
s via the Rx and Tx highway
configuration registers, bytes 0 and 1, where
= 1/4 bit. The offset difference (Tx highway offset – Rx highway off-
set) can therefore take the range from
(125 –
)μ
s to +(125 –
)μ
s. The table below shows the virtual frame for
transmission for the various cases of offset difference.
Table 7. Offset Difference and Its Effect on Frame for Transmission
* The values for A, B, C, and D are specified in Table 8 below.
Table 8. Offset Difference Boundaries
Table 7 and Table 8 can be used to determine the latency of time slots through the TSI in a frame integrity situation.
Keep in mind that the offset difference is the major factor in determining which virtual Tx frame the time slots will go
out in. The boundary values given in Table 8 are accurate to within ±1 time slot @ 8.192 Mbits/s (= ±4 bits @ 4.096
Mbits/s = ±2 bits @ 2.048 Mbits/s) and will depend on your particular register settings.
This example can be used to determine the latency of a frame integrity situation. Keep in mind that only the Tx and
Rx highway offsets are relevant when determining the number of physical frames that the transmit data will incur.
However, there is a small range of offset separation where the data will go out in either virtual Tx frame N + 2 or
N + 3, depending on the actual Rx and Tx offsets chosen.
There may be many Rx/Tx highway pairs performing frame integrity simultaneously, but the definition of frame
integrity states that integrity is maintained between each Rx and Tx pair and not across multiple receive highways.
However, in practice, if a Tx highway contains FI time slots from multiple Rx highways and those Rx highways have
the same highway offset, then all of the FI time slots will incur equal delay with frame integrity through the switch.
Offset Difference = (Tx Highway Offset – Rx Highway Offset)
Virtual Frame for Transmission
A
≤
offset difference < B*
B
≤
offset difference < C*
C
≤
offset difference
≤
D*
N + 3
N + 2
N + 1
Offset
Difference
Boundary
Boundary
Value
(
μ
s)
Boundary Value in Terms of Time Slots (ts) and Bits, at Different Data Rates
2.048 Mbits/s
4.096 Mbits/s
8.192 Mbits/s
A
B
C
D
(125
)
121.09375
+
3.90625
+
(125
)
(31 ts, 7 3/4 bits)
31 ts
1 ts
31 ts, 7 3/4 bits
(63 ts, 7 3/4 bits)
62 ts
2 ts
63 ts, 7 3/4 bits
(127 ts, 7 3/4 bits)
124 ts
4 ts
127 ts, 7 3/4 bits
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| TTSI4K32T | 4096-Channel, 32-Highway Time-Slot Interchanger(4096通道、32路干線時隙交換機(jī)) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TTSI4K32T3BAL | 制造商:AGERE 制造商全稱:AGERE 功能描述:4096-Channel, 32-Highway Time-Slot Interchanger |
| TTSL-1 | 功能描述:電線鑒定 THERM. TRANS. SELFLAM LABEL RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長度:1 in |
| TTSL10VC3-5 | 功能描述:電線鑒定 ThermTrans, Self-Lam Label, Vinyl, .50" RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長度:1 in |
| TTSL126VC3-1 | 功能描述:電線鑒定 1.0" X 7.44" THERMAL RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長度:1 in |
| TTSL-13 | 功能描述:電線鑒定 ThermTrans, Self-Lam Label, Vinyl, 1.00" RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長度:1 in |
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