DS26521LN+ Maxim Integrated Products, DS26521LN+ Datasheet - Page 206

• Manufacturer Part Number: DS26521LN+
• Description: IC TXRX T1/E1/J1 64-LQFP
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS26521LN+

• Number Of Drivers/receivers: 1/1
• Protocol: T1/E1/J1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit 1: Open-Circuit Status (OCS). A real-time bit that is set when the LIU detects that the TTIP and TRING
outputs are open-circuited.
Bit 5: Over Equalized (OEQ). The equalizer is over equalized. This can happen if there is very large unexpected
resistive loss. This could result if monitor mode is used and the device is not placed in monitor mode. This indicator
provides more qualitative information to the receive loss indicators.
Bit 4: Under Equalized (UEQ). The equalizer is under equalized. A signal with a very high resistive gain is being
applied. This indicator provides more qualitative information to the receive loss indicators.
Bit 2: Short-Circuit Status (SCS). A real-time bit that is set when the LIU detects that the TTIP and TRING
outputs are short-circuited. The load resistance must be 25Ω (typically) or less for short-circuit detection.
Bit 0: Loss-of-Signal Status (LOSS). A real-time bit that is set when the LIU detects a LOS condition at RTIP and
RRING.
—
7
0
LRSR
LIU Real Status Register
1003h
—
6
0
OEQ
5
0
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UEQ
4
0
—
3
0
DS26521 Single T1/E1/J1 Transceiver
SCS
2
0
OCS
1
0
LOSS
0
0