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參數(shù)資料
| 型號(hào)： | T7264 |
| 廠商： | Lineage Power |
| 英文描述： | U-Interface 2B1Q Transceiver(U接口 2B1Q收發(fā)器) |
| 中文描述： | U型接口2B1Q收發(fā)器（ü接口2B1Q收發(fā)器） |
| 文件頁數(shù)： | 15/54頁 |
| 文件大小： | 876K |
| 代理商： | T7264 |
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Data Sheet
April 1998
T7264 U-Interface 2B1Q Transceiver
Lucent Technologies Inc.
15
K2 Interface Description
(continued)
Table 5. B1, B2, D, and S1 Octets (Overview)
Table 6. B1, B2, D, and S1 Octets (Functions)
Octet
B1
B2
D
DF
S1
Octet #
1
2
3
3
4
DO/DI
DO/DI
DO/DI
DI
DO
DO/DI
Bit 1
B11
B21
D1
D1
1
Bit 2
B12
B22
D2
D2
1
Bit 3
B13
B23
1
1
1
Bit 4
B14
B24
1
1
1
Bit 5
B15
B25
1
RSF
1
Bit 6
B16
B26
1
RF
1
Bit 7
B17
B27
1
TSF
1
Bit 8
B18
B28
1
TF
1
Octet
B1
Bit #
1—8
Symbol
B11—B18
Name/Function
B1 Octet.
The B1 octet is used for transferring basic access channel B1. B11 is the
first bit of the B1 octet sent or received.
B2 Octet.
The B2 octet is used for transferring basic access channel B2. B21 is the
first bit of the B2 octet sent or received.
D Octet.
The two D-channel bits are transmitted in the first 2 bits of the D octet. D1
is the first bit of the D pair sent or received.
Receive Superframing.
12.5% duty cycle at an 83.333 Hz rate (12 ms).
0—Last 84 K2 frames of the superframe.
0 to 1—Marks the first K2 frame of 2B+D data. Corresponds to the first 2B+D data
of the U superframe.
1—First 12 K2 frames and during reset state up to point T6 or T7.
Receive Framing.
50% duty cycle at a 666.66 Hz rate (1.5 ms).
0—Last six K2 frames of the U frame.
0 to 1—Marks every 12th K2 frame of 2B+D data.
Corresponds to the first 2B+D data of the U frame.
1—First six K2 frames and during reset state up to point T6 or T7.
Transmit Superframing.
12.5% duty cycle at an 83.333 Hz rate (12 ms).
0—Last 84 K2 frames of the superframe
0 to 1—Marks the first K2 frame of 2B+D data.
Corresponds to the first 2B+D data of the U superframe.
1—First 12 K2 frames and during reset state up to point T6 or T7.
Transmit Framing.
50% duty cycle at a 666.66 Hz rate (1.5 ms).
0—Last six K2 frames of the U frame.
0 to 1—Marks every 12th K2 frame of 2B+D data.
Corresponds to the first 2B+D data of the U frame.
1—First six K2 frames and during reset state up to point T6 or T7.
S1 Octet.
All bits of the S1 octet are set to 1.
B2
1—8
B21—B28
D
1—2
D1, D2
DF
5
RSF
DF
6
RF
DF
7
TSF
DF
8
TF
S1
1—8
S11—S18
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