3.0 Circuit Descriptions
RS8953B/8953SPB
3.5 HDSL Channel
HDSL Channel Unit
Table 3-2. HDSL Frame Structure and Overhead Bit Allocation
HOH Register
Bit
HOH Bit #
Symbol
Bit Name
SYNC word
1–14
15
sw1–sw14
losd
—
Loss of Signal
IND[0]
IND[1]
16
febe
Far End Block Error
Payload Blocks 1–12
Embedded Operations Channel
Cyclic Redundancy Check
HTU-R Power Status
Power Status Bit 2
17–20
21–22
23
eoc1–eoc4
crc1–crc2
ps1
EOC[0]–EOC[3]
—
IND[2]
24
ps2
IND[3]
25
bpv
Bipolar Violation
IND[4]
26
eoc5
Embedded Operations Channel
Payload Blocks 13–24
Embedded Operations Channel
Cyclic Redundancy Check
HDSL Repeater Present
Repeater Remote Block Error
Repeater Central Block Error
Repeater Alarm
EOC[4]
27–30
31–32
33
eoc6–eoc9
crc3–crc4
hrp
EOC[5]–EOC[8]
—
IND[5]
34
rrbe
IND[6]
35
rcbe
IND[7]
36
rega
IND[8]
Payload Blocks 25–36
Embedded Operations Channel
Cyclic Redundancy Check
Remote Terminal Alarm
Ready to Receive
37–40
41–42
43
eoc10–eoc13
EOC[9]–EOC[12]
—
crc5–crc6
rta
rtr
IND[9]
44
IND[10]
IND[11]
IND[12]
45
uib
uib
Unspecified Indicator Bit
Unspecified Indicator Bit
Payload Blocks 37–48
Stuff Quat Sign
46
47
48
49
50
sq1
sq2
sq3
sq4
STUFF[0]
STUFF[1]
STUFF[2]
STUFF[3]
Stuff Quat Magnitude
Stuff Quat Sign
Stuff Quat Magnitude
3-20
Conexant
N8953BDSB
CONEXANT [ CONEXANT SYSTEMS, INC ]
