tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 530

• Manufacturer Part Number: tmxf28155
• Description: Tmxf28155 Super Mapper 155/51 Mbits/s Sonet/sdh X28/x21 Ds1/e1
• Manufacturer: ETC-unknow

155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
21 28-Channel Framer Block Functional Description
Table 599. Associated Signaling Mode CHI 2-Byte Time-Slot Format for Stuffed Channels
* The default stuff byte is shown.
21.26.14 CEPT: Time-Slot 16 Signaling ASM 2-Byte Time-Slot Format
Table 600
Table 600. Associated Signaling Mode CHI 2-Byte Time-Slot format for CEPT
* In the CEPT formats, these bits are undefined.
† The P bit is the parity-sense bit calculated over the 8 data bits, the ABCD bits, and the P bit. The identical
21.26.15 CHI Offset Programming
To facilitate bit offset programming, two parameters are introduced: CEX is defined as the clock edge with which
the first bit of time slot 0 is transmitted; CER is defined as the clock edge on which bit 0 of time slot 0 is latched.
CEX and CER are counted relative to the edge on which the CHIFS signal is sampled. Values of CEX and CER
depend upon the values of the parameters described below.
The following three tables give decimal values of CEX and CER for various values of FRM_CMS
FRM_TFSCKE
(Table
Table 601. Programming Values for FRM_TOFF[2:0] and FRM_ROFF[2:0] when FRM_CMS = 0
Table 602. Programming Values for FRM_TOFF[2:0] when FRM_CMS = 1
Table 603. Programming Values for FRM_ROFF[2:0] when FRM_CMS = 1
530
Pbit in the transmitted signaling data is echoed back to the system in the received signaling information
FRM_TFSCKE/
FRM_RFSCKE
FRM_RFSCKE
FRM_TFSCKE
0
1
418). The byte (time slot) offsets are assumed to be zero in the following examples.
0
1
0
1
0
1
1
illustrates the ASM time slot format for valid CEPT E1 time slots.
2
(Table
1
3
Payload Data*
Payload Data
347), FRM_RFSCKE
000
000
000
1
4
0
0
0
0
0
0
1
5
001
001
001
2
2
4
4
4
4
1
6
010
010
010
CEPT ASM CHI Time-Slot
(Table
4
4
8
8
8
8
FRM_ROFF[2:0] or FRM_TOFF[2:0]
1
7
ASM CHI Time-Slot
355), FRM_TOFF[2:0]
011
1
8
011
011
6
6
12
12
12
12
FRM_ROFF[2:0]
FRM_TOFF[2:0]
A
0
100
100
100
8
8
16
16
16
16
B
1
101
10
10
101
101
(continued)
20
20
20
20
Signaling Information*
(Table
Signaling Information
C
1
110
418), and FRM_ROFF[2:0]
12
12
D
1
110
110
24
24
24
24
parity-sense
X*
1
111
14
14
111
111
28
28
28
28
X*
Agere Systems Inc.
1
of the received system
(Table
(decimal)
(decimal)
(decimal)
CER or
CEX
CEX
CER
May 2001
X*
1
347),
P
1
†