28953-SWG-001-A_15 Datasheet, PDF (64/183 Pages) M/A-COM Technology Solutions, Inc. – Application and Channel Unit Software

6.0 Channel Unit Code
6.1 Configurations
RS8953B
Application and Channel Unit Software Developer’s Guide
Table 6-1. HDSL Frame Structure and Overhead Bit Allocation (2 of 2)
HOH Bit
Symbol
Bit Name
34
rrbe
Repeater Remote Block Error
35
rcbe
Repeater Central Block Error
36
rega
Repeater Alarm
Payload Blocks 25–36
37–40
eoc10–eoc13
Embedded Operation Channel
41–42
crc5–crc6
Cyclic Redundancy Check
43
rta
Remote Terminal Alarm
44
rtr
Ready To Receive
45
uib
Unspecified Indicator Bit
46
uib
Unspecified Indicator Bit
Payload Blocks 37–48
47
sq1
Stuff Quat Sign
48
sq2
Stuff Quat Magnitude
49
sq3
Stuff Quat Sign
50
sq4
Stuff Quat Magnitude
HOH Register Bit
IND[6]
IND[7]
IND[8]
EOC[9]–EOC[12]
—
IND[9]
IND[10]
IND[11]
IND[12]
STUFF[0]
STUFF[1]
STUFF[2]
STUFF[3]
Figure 6-1. HDSL Frame Structure
One HDSL Frame
SS
QQ
12
SYNC
WORD
H BB
O 00
H 12
0 ms
BH BB
1O 11
2H 34
B H BB
2O 22
4 H 56
B H BB
3O 33
6 H 78
LEGEND:
Bnn = Payload blocks 1–48
HOH = HDSL overhead
SQn = Stuff Quat
B S S _SYNC
4 Q Q _WORD
812
6 ms
NOTE(S): In the EVM system, the bit pumps and channel unit are configured based on the DIP switch settings illustrated in
Figure 2-2.
6-2
Conexant
100418C