DS21Q48 Maxim Integrated Products, DS21Q48 Datasheet - Page 38
DS21Q48
Manufacturer Part Number
DS21Q48
Description
IC LIU E1/T1/J1 QUAD 5V 144-BGA
Manufacturer
Maxim Integrated Products
Type
Line Interface Units (LIUs)r
Specifications of DS21Q48
Protocol
E1
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Surface Mount
Package / Case
144-CSBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Drivers/receivers
-
Available stocks
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Part Number
Manufacturer
Quantity
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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