DS32512+ Maxim Integrated Products, DS32512+ Datasheet - Page 9

• Manufacturer Part Number: DS32512+
• Description: IC LIU DS3/E3/STS-1 484-BGA
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS32512+

• Protocol: DS3
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 484-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Drivers/receivers: -

4. DETAILED DESCRIPTION
The DS32506 (6 port), DS32508 (8 port), and DS32512 (12 port) LIUs perform the functions necessary for
interfacing at the physical layer to DS3, E3, or STS-1 lines. Each LIU has independent receive and transmit paths
and a built-in jitter attenuator. The receiver performs clock and data recovery from a B3ZS- or HDB3-coded
alternate mark inversion (AMI) signal and monitors for loss of the incoming signal. The receiver optionally performs
B3ZS/HDB3 decoding and outputs the recovered data in either binary (NRZ) or digital bipolar format. The
transmitter accepts data in either binary (NRZ) or digital bipolar format, optionally performs B3ZS/HDB3 encoding,
and drives standard pulse-shape waveforms onto 75Ω coaxial cable. Both transmitter and receiver are high-
impedance when V
jitter attenuator can be mapped into the receiver data path, mapped into the transmitter data path, or disabled. An
on-chip clock adapter generates all line-rate clocks from a single input clock. Control interface options include 8- or
16-bit parallel, SPI, and hardware mode. The DS325xx LIUs conform to the telecommunications standards listed in
Table
Figure 4-1. External Connections, Internal Termination Enabled
1-1. The external components required for proper operation are shown in
DD
is out of spec to enable hot-swappable 1:1 and 1+1 board redundancy without relays. The
1:1
1:1
TXP
TXP
TXN
TXN
RXN
RXP
9 of 130
RVDD
TVDD
JVDD
RVSS
TVSS
JVSS
0.01μF
0.01μF
0.01μF
0.1μF
0.1μF
0.1μF
Figure 4-1
1μF
1μF
1μF
GROUND
PLANE
DS32506/DS32508/DS32512
1.8V
POWER
PLANE
and
Figure
4-2.