參數(shù)資料
型號: T7256A
英文描述: Compliance with the New ETSI PSD Requirement
中文描述: 符合新的ETSI PSD的要求
文件頁數(shù): 17/116頁
文件大?。?/td> 1056K
代理商: T7256A
Data Sheet
January 1998
T7256 Single-Chip NT1 (SCNT1) Transceiver
Lucent Technologies Inc.
13
U-Interface Frame Structure
(continued)
Figure 5. U-Interface Superframe Bit Groups
Bit Assignments
Table 2. U-Interface Bit Assignment
* LT(NT). Values in parentheses () indicate meaning at the NT.
cso is fixed at 0 by the device to indicate both cold and warm start capability.
nib is fixed at 1 by the device to indicate the link is normal.
Bit #
Frame #
1
2
3
4
5
6
7
8
1—18
Sync
ISW
19—234
12(2B+D)
235
M1
236
M2
237
M3
238
M4
239
M5
240
M6
2B+D
eoc1
CONTROL & STATUS (UCS)
SW
crc
eoc2
Bit #
Frame #
1
2
3
4
5
6
7
8
1—18
Sync
ISW
SW
SW
SW
SW
SW
SW
SW
19—234
12(2B+D)
2B+D
2B+D
2B+D
2B+D
2B+D
2B+D
2B+D
2B+D
235
M1
eoc
a1
eoc
dm
eoc
i3
eoc
i6
eoc
a1
eoc
dm
eoc
i3
eoc
i6
236
M2
eoc
a2
eoc
i1
eoc
i4
eoc
i7
eoc
a2
eoc
i1
eoc
i4
eoc
i7
237
M3
eoc
a3
eoc
i2
eoc
i5
eoc
i8
eoc
a3
eoc
i2
eoc
i5
eoc
i8
238
M4
act
239
M5
R
1, 5
R
2, 5
crc
1
crc
3
crc
5
crc
7
crc
9
crc
11
240
M6
R
1, 6
febe
crc
2
crc
4
crc
6
crc
8
crc
10
crc
12
dea (ps1)*
R
3, 4
(ps2)*
R
4, 4
(ntm)*
R
5, 4
(cso)*
R
6, 4
uoa (sai)*
aib (nib)*
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