PRELIMINARY
PM4318 OCTLIU
DATASHEET
PMC- 2001578
ISSUE 3
OCTAL E1/T1/J1 LINE INTERFACE DEVICE
Register 071H, 0F1H, 171H, 1F1H, 271H, 2F1H, 371H, 3F1H:
RLPS ALOS Detection/Clearance Threshold
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
CLR_THR[3]
CLR_THR[2]
CLR_THR[1]
CLR_THR[0]
DET_THR[3]
DET_THR[2]
DET_THR[1]
DET_THR[0]
0
0
0
0
0
0
0
0
Table 15 – ALOS Detection/Clearance Thresholds
THR
Signal level (dB)
Applicable
Standard
Detection/Clearance
0000
0001
0010
0011
0100
0101
8
9
10
11
20
21
G.775(E1)
Clearance (if <= 9dB)
I.431 (E1)
Detection (if > 20dB)
and Clearance
ETSI 300 233
0110
0111
1000
22
30
31
I.431 (T1)
Detection (if > 30dB)
and Clearance
1001
1010
1011
1100
1101
1110
1111
32
33
34
35
36
37
38
G.775 (E1)
Detection (if >= 35dB)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
154
PMC [ PMC-SIERRA, INC ]
