DS26334GA3+ Maxim Integrated Products, DS26334GA3+ Datasheet - Page 29

• Manufacturer Part Number: DS26334GA3+
• Description: IC LIU E1/T1/J1 3.3V 256-CSBGA
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS26334GA3+

• Number Of Drivers/receivers: 16/16
• Protocol: IEEE 1149.1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 256-CSBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.5.6.1
For short-haul mode, loss is detected if the received signal level is less than 200mV for duration of 192 bit periods.
LOS is reset if the all of the following criteria are met:
For long-haul mode, loss is detected if the received signal level is less than 30mV for duration of 192 bit periods.
LOS is reset if the all of the following criteria are met:
5.5.6.2
For short-haul mode, LOS is detected if the received signal level is less than 200mV for a continuous duration of
192 bit periods. LOS is reset if the receive signal level is greater than 300mV for a duration of 192 bit periods.
For long-haul mode, LOS is detected if the received signal level is less than 12mV for a continuous duration of 192
bit periods. LOS is reset if the receive signal level is greater than 20mV for a duration of 192 bit periods.
5.5.6.3
For short-haul mode, LOS is detected if the received signal level is less than 200mV for a continuous duration of
2048 (1ms) bit periods. LOS is reset if the receive signal level is greater than 300mV for a duration of 192 bit
periods.
For long-haul mode, LOS is detected if the received signal level is less than 12mV for a continuous duration of 192
bit periods. LOS is reset if the receive signal level is greater than 20mV for a duration of 192 bit periods.
5.5.7
Table 5-8
The registers related to the AIS detection are shown in
Table 5-8. AIS Criteria ANSI T1.231, ITU-T G.775, and ETS 300 233 Specifications
AIS
Detection
Criteria
AIS
Clearance
Criteria
Table 5-9. AIS Detection and Reset Criteria for DS26334
AIS
Detection
Criteria
AIS
Clearance
Criteria
CRITERIA
CRITERIA
•
•
•
•
•
•
AIS
ANSI T1.231 for T1 and J1 Modes
ITU-T G.775 for E1 Modes
ETS 300 233 for E1 Modes
outlines the DS26334 AIS related specifications.
24 or more ones are detected in 192-bit period with a detection threshold of 300mV measured
at RTIP and RRING.
During the 192 bits less than 100 consecutive zeros are detected.
8 consecutive zeros are not detected if B8ZS is set.
24 or more ones are detected in 192-bit period with a detection threshold of 40mV measured
at RTIP and RRING.
During the 192 bits less than 100 consecutive zeros are detected.
8 consecutive zeros are not detected if B8ZS is set.
2 or fewer zeros in each of 2
consecutive 512-bit stream
received.
3 or more zeros in each of 2
consecutive 512-bit streams
received.
2 or fewer zeros in each of 2
consecutive 512-bit streams
received.
3 or more zeros in each of 2
consecutive 512-bit streams
received.
ITU-T G.775 for E1
ITU-T G.775 for E1
DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit
Fewer than 3 zeros detected in
512 bit period.
3 or more zeros in 512 bits
received.
Fewer than 3 zeros detected in
512-bit period.
3 or more zeros in 512 bits
received.
29 of 121
ETS 300 233 for E1
ETS 300 233 for E1
Table
STANDARD
STANDARD
Table 5-9
5-10.
states the AIS functionality in the DS26334.
Fewer than 9 zeros detected in
a 8192-bit period (a ones
density of 99.9% over a period
of 5.3ms) are received.
9 or more zeros detected in a
8192-bit period are received.
Fewer than 9 zeros contained
in 8192 bits.
9 or more bits received in a
8192-bit stream.
ANSI T1.231 for T1
ANSI T1.231 for T1