IDT82P2284 Integrated Device Technology, Inc., IDT82P2284 Datasheet - Page 32

• Manufacturer Part Number: IDT82P2284
• Description: 4 Channel T1/J1/E1 Transceiver
• Manufacturer: Integrated Device Technology, Inc.

IDT82P2284
Table 9: LOS Condition In T1/J1 Mode
Functional Description
Table 10: LOS Condition In E1 Mode
Note:
* The Q dB is set in the LOS[4:0] bits.
** A hopping 128-bit window means this: An entire 128 bits is taken from the data stream and is checked. If the criteria are not met, all the 128 bits are thrown and another 128 bits are
caught for checking.
Detected
Loss of Signal in T1/J1 Mode
Detected
Note:
* The Q dB is set in the LOS[4:0] bits.
** A hopping 32-bit window means this: An entire 32 bits is taken from the data stream and is checked. If the criteria are not met, all the 32 bits are thrown and another 32 bits are caught
for checking.
Cleared
Cleared
Loss of Signal in E1 Mode
LOS
LOS
LOS
LOS
Continuous Intervals 175 bits
Continuous Intervals 32 bits
Mark Density
Mark Density
Amplitude
Amplitude
Amplitude
Amplitude
below 800 mVpp
above 1 Vpp
12.5% (16 marks in a hopping
128-bit window **) with less
than 100 continuous zeros
below 800 mVpp
above 1 Vpp
12.5% (4 marks in a hopping
32-bit window **) with less than
16 continuous zeros
ANSI T1.231
G.775
Short Haul Application
Short Haul Application
below 800 mVpp
1544 bits
above 1 Vpp
12.5% (16 marks in a hopping
128-bit window **) with less
than 100 continuous zeros
below 800 mVpp
2048 bits
above 1 Vpp
12.5% (4 marks in a hopping
32-bit window **) with less than
16 continuous zeros
I.431
I.431
21
QUAD T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
below Q dB *
175 bits
above Q + 4 dB *
12.5% (16 marks in a hopping
128-bit window **) with less
than 100 continuous zeros
32 bits
above Q + 4 dB *
12.5% (4 marks in a hopping
32-bit window **) with less than
16 continuous zeros
below Q dB *
ANSI T1.231
G.775
Long Haul Application
Long Haul Application
below Q dB *
1544 bits
above Q + 4 dB *
12.5% (16 marks in a hopping
128-bit window **) with less
than 100 continuous zeros
below Q dB *
2048 bits
above Q + 4 dB *
12.5% (4 marks in a hopping
32-bit window **) with less than
16 continuous zeros
March 22, 2004
I.431
I.431