DS2148 Dallas Semiconducotr, DS2148 Datasheet - Page 39

• Manufacturer Part Number: DS2148
• Description: 5V E1/T1/J1 Line Interface
• Manufacturer: Dallas Semiconducotr

RIR2 (09H): RECEIVE INFORMATION REGISTER 2
RECEIVE LEVEL INDICATION Table 7-2
(MSB)
RL3
SYMBOL
(real time)
(real time)
(real time)
(real time)
(real time)
RL3
(latched)
ARLB
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
SEC
RL3
RL2
RL1
RL0
N/A
N/A
RL2
RL2
POSITION
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
RIR2.7
RIR2.6
RIR2.5
RIR2.4
RIR2.3
RIR2.2
RIR2.1
RIR2.0
RL1
DESCRIPTION
Receive Level Bit 3. See Table 7-2.
Receive Level Bit 2. See Table 7-2.
Receive Level Bit 1. See Table 7-2.
Receive Level Bit 0. See Table 7-2.
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 6 for more
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.
RL1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
RL0
39 of 75
N/A
RL0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
N/A
Receive Level
-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)
ARLB
DS2148/Q48
(LSB)
SEC