Datasheet

DS2148/DS21Q48
38 of 73
RIR2 (09H): RECEIVE INFORMATION REGISTER 2
(MSB) (LSB)
RL3 RL2 RL1 RL0 N/A N/A ARLB SEC
SYMBOL POSITION DESCRIPTION
RL3
(real time)
RIR2.7 Receive Level Bit 3. See Table 5-2.
RL2
(real time)
RIR2.6 Receive Level Bit 2. See Table 5-2.
RL1
(real time)
RIR2.5 Receive Level Bit 1. See Table 5-2
.
RL0
(real time)
RIR2.4 Receive Level Bit 0. See Table 5-2
.
N/A RIR2.3 Not Assigned. Could be any value when read.
N/A RIR2.2 Not Assigned. Could be any value when read.
ARLB
(real time)
RIR2.1 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 4 for more
details. This bit will be forced low when the automatic RLB
circuitry is disabled (CCR6.5 = 0).
SEC
(latched)
RIR2.0 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.
Table 5-2. Receive Level Indication
RL3 RL2 RL1 RL0
RECEIVE LEVEL
(dB)
0 0 0 0 < -2.5
0 0 0 1 -2.5 to -5.0
0 0 1 0 -5.0 to -7.5
0 0 1 1 -7.5 to -10.0
0 1 0 0 -10.0 to -12.5
0 1 0 1 -12.5 to -15.0
0 1 1 0 -15.0 to -17.5
0 1 1 1 -17.5 to -20.0
1 0 0 0 -20.0 to -22.5
1 0 0 1 -22.5 to -25.0
1 0 1 0 -25.0 to -27.5
1 0 1 1 -27.5 to -30.0
1 1 0 0 -30.0 to -32.5
1 1 0 1 -32.5 to -35.0
1 1 1 0 -35.0 to -37.5
1 1 1 1 > -37.5