tmxf28155 ETC-unknow, tmxf28155 Datasheet - Page 529

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

Preliminary Data Sheet
May 2001
21 28-Channel Framer Block Functional Description
21.26.12 CHI Timing with Associated Signaling Mode Enabled
Figure 72
(Table
consist of 32 contiguous 16-bit time slots when the 4.096 MHz CHI data rate mode is selected.
In DS1 frame formats, each frame consists of 24 time slots and 8 stuffed time slots. Each time slot consists of two
octets.
In CEPT modes, each frame consists of 32 time slots. Each time slot consists of two octets.
21.26.13 ASM 2-Byte Time-Slot Format
Table 598
Table 598. Associated Signaling Mode CHI 2-Byte Time-Slot Format for DS1 Frames
* X indicates bits that are undefined by the framer
† The identical sense of the received system P bit in the transmitted signaling data is echoed back to the system in the received signaling infor-
The DS1 framing formats require rate adoption from the line-interface 1.544 Mbits/s bitstream to the system-inter-
face 4.096 Mbits/s bitstream. The rate adoption results in the need for stuffed time slots on the system interface.
Table 599
grammable idle code in register FRM_STUFF[] (default = 7F (hex)).
Agere Systems Inc.
4.096 Mbits/s CHI:
8.192 Mbits/s CHI:
mation.
1
RCHIDATA
RCHIDATA
TCHIDATA
TCHIDATA
347)) and the CHIDTS mode is disabled (bit FRM_CHIDTS
TCHIFS/
RCHIFS
illustrates the CHI frame timing when the associated signaling mode is enabled (bit FRM_ASM
2
illustrates the ASM time slot format for valid channels.
illustrates the ASM format for T1 stuffed channels. The stuffed data and signaling bytes contain the pro-
or
Figure 72. Associated Signaling Mode Concentration Highway Interface Timing
3
Payload Data
4
DATA 0
DATA AND SIGNALING BYTES ARE INTERLEAVED
5
FRAME 1
FRAME 1
FRAME = 64 bytes: 32 DATA + 32 SIGNALING
6
SIGNALING 0
DS1: ASM CHI Time-Slot
7
FRAME 1
FRAME
8
155/51 Mbits/s SONET/SDH x28/x21 DS1/E1
A
125 s
HIGH IMPEDANCE
(Table
B
DATA 31
(continued)
347)). The frames are 125 s long and
Signaling Information*
C
TMXF28155/51 Super Mapper
SIGNALING 31
D
X
F
DATA 0
FRAME 2
FRAME 2
FRAME 2
G
5-8980(F)
P
529
†