DS2148T+ Maxim Integrated Products, DS2148T+ Datasheet - Page 38

• Manufacturer Part Number: DS2148T+
• Description: IC LIU E1/T1/J1 5V 44-TQFP
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS2148T+

• Number Of Drivers/receivers: 1/1
• Protocol: T1/E1/J1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RIR2 (09H): RECEIVE INFORMATION REGISTER 2
Table 5-2. Receive Level Indication
(MSB)
RL3
RL3
SYMBOL
(real time)
(real time)
(real time)
(real time)
(real time)
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
(latched)
ARLB
SEC
RL3
RL2
RL1
RL0
N/A
N/A
RL2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
RL2
POSITION
RL1
RIR2.7
RIR2.6
RIR2.5
RIR2.4
RIR2.3
RIR2.2
RIR2.1
RIR2.0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
RL1
RL0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
DESCRIPTION
Receive Level Bit 3. See
Receive Level Bit 2. See
Receive Level Bit 1. See
Receive Level Bit 0. See
Not Assigned. Could be any value when read.
Not Assigned. Could be any value when read.
Automatic Remote Loopback Detected. This bit will be set to
a one when the automatic Remote Loopback (RLB) circuitry
has detected the presence of a loop up code for 5 seconds. It
will remain set until the automatic RLB circuitry has detected
the loop down code for 5 seconds. See Section
details. This bit will be forced low when the automatic RLB
circuitry is disabled (CCR6.5 = 0).
One-Second Timer. This bit will be set to a one on one-second
boundaries as timed by the device based on the RCLK. It will
be cleared when read.
RL0
RECEIVE LEVEL
38 of 73
-10.0 to -12.5
-12.5 to -15.0
-15.0 to -17.5
-17.5 to -20.0
-20.0 to -22.5
-22.5 to -25.0
-25.0 to -27.5
-27.5 to -30.0
-30.0 to -32.5
-32.5 to -35.0
-35.0 to -37.5
-7.5 to -10.0
-2.5 to -5.0
-5.0 to -7.5
> -37.5
< -2.5
(dB)
N/A
Table
Table
Table
Table
N/A
5-2.
5-2.
5-2.
5-2.
ARLB
4
for more
(LSB)
SEC