DS32508N-W Maxim Integrated, DS32508N-W Datasheet - Page 9
DS32508N-W
Manufacturer Part Number
DS32508N-W
Description
Network Controller & Processor ICs
Manufacturer
Maxim Integrated
Datasheet
1.DS32512W.pdf
(130 pages)
Specifications of DS32508N-W
Part # Aliases
90-32508-NW0
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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.
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