DS21Q48 Maxim Integrated Products, DS21Q48 Datasheet - Page 20
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
Company
Part Number
Manufacturer
Quantity
Price
Table 2-8. Loopback Control in Hardware Mode
Table 2-9. Transmit Data Control in Hardware Mode
Table 2-10. Receive Sensitivity Settings
Table 2-11. Monitor Gain Settings
Table 2-12. Internal Rx Termination Select
Table 2-13. MCLK Selection
Remote Loopback
Local Loopback
Analog Loopback
No Loopback
Transmit Unframed All Ones
Transmit Alternating Ones and Zeros
Transmit PRBS
TPOS and TNEG
(CCR5.5)
(CCR5.1)
2.048MHz
2.048MHz
1.544MHz
MCLK
MM1
LOOPBACK
RT1
0
0
1
1
0
0
1
1
(CCR4.4)
TRANSMIT DATA
EGL
0
1
1
0
(CCR5.4)
(CCR5.0)
(CCR1.3)
MM0
JAMUX
RT0
0
1
0
1
0
1
0
1
0
1
0
SYMBOL
ALB
RLB
LLB
Internal receive-side termination disabled
Internal receive-side 120Ω enabled
Internal receive-side 100Ω enabled
Internal receive-side 75Ω enabled
–
Normal operation (no boost)
TERMINATION CONFIGURATION
INTERNAL LINEAR
GAIN BOOST (dB)
(CCR1.7)
(CCR1.7)
0 (E1)
0 (E1)
1 (T1)
1 (T1)
ETS
ETS
INTERNAL RECEIVE
0
1
1
SYMBOL
TPRBSE
CONTROL BIT
TAOZ
TUA1
20
26
32
–
CCR6.6
CCR6.7
CCR6.4
20 of 73
–
CONTROL
-12dB (short haul)
-43dB (long haul)
-30dB (limited long haul)
-36dB (long haul)
CCR3.7
CCR3.5
CCR3.4
RECEIVE SENSITIVITY
BIT
–
LOOP1
1
1
0
0
TX1
1
1
0
0
LOOP0
1
0
1
0
TX0
1
0
1
0