82V2041EPPG IDT, Integrated Device Technology Inc, 82V2041EPPG Datasheet - Page 26

• Manufacturer Part Number: 82V2041EPPG
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82V2041EPPG

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Package Type: TQFP
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

Table-14 LOS Declare and Clear Criteria, Adaptive Equalizer Enabled
Table-13 LOS Declare and Clear
3.6.2
the Clock & Data Recovery unit is enabled. The status of AIS detection is
reflected in the AIS_S bit (STAT0, 17H). In T1/J1 applications, the criteria
Functional Description
IDT82V2041E
The Alarm Indication Signal can be detected by the IDT82V2041E when
1=T1/J1
1=T1/J1
T1E1
0=E1
T1E1
0=E1
AIS DETECTION
Control bit
0=T1.231
1=I.431
0=G.775
1=I.431/ETSI
0
1
0
1
LAC
LAC
T1.231
G.775
I.431/
I.431
ETSI
Control bit
-
-
-
Level < 800 mVpp
N=175 bits
Level < 800 mVpp
N=1544 bits
Level < 800 mVpp
N=32 bits
Level < 800 mVpp
N=2048 bits
00000
00001
…
01010
01011 - 11111
00000
…
00110
00111
...
01010
01011 - 11111
00000
…
00010
00011
…
01010
01011 - 11111
00000
00001
…
01010
01011 - 11111
LOS[4:0]
LOS declare threshold
-4
-6
…
-24
Reserved
-16
-18
...
-24
Reserved
-4
…
-8
-10
…
-24
Reserved
-6
…
-24
Reserved
-4
-4
Q (dB)
Level < Q
N=175 bits
Level < Q
N=1544 bits
Level < Q
N=32 bits
Level < Q
N=2048 bits
LOS declare threshold
SINGLE CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT
26
for declaring/clearing AIS detection are in compliance with the ANSI
T1.231. In E1 applications, the criteria for declaring/clearing AIS detection
comply with the ITU G.775 or the ETSI 300233, as selected by the LAC bit
Level > Q+ 4dB
M=128 bits
12.5% mark density
<100 consecutive zeroes
Level > Q+ 4dB
M=128 bits
12.5% mark density
<100 consecutive zeroes
Level > Q+ 4dB
M=32 bits
12.5% mark density
<16 consecutive zeroes
Level > Q+ 4dB
M=32 bits
12.5% mark density
<16 consecutive zeroes
LOS clear threshold
Level > 1 Vpp
M=128 bits
12.5% mark density
<100 consecutive zeroes
Level > 1 Vpp
M=128 bits
12.5% mark density
<100 consecutive zeroes
Level > 1 Vpp
M=32 bits
12.5% mark density
<16 consecutive zeroes
Level > 1 Vpp
M=32 bits
12.5% mark density
<16 consecutive zeroes
LOS clear threshold
I.431 Level detect range is -18 to -30 dB.
G.775 Level detect range is -9 to -35 dB.
I.431 Level detect range is -6 to -20 dB.
December 9, 2005
Note