DS3170N+ Maxim Integrated Products, DS3170N+ Datasheet - Page 28
DS3170N+
Manufacturer Part Number
DS3170N+
Description
IC TXRX DS3/E3 100-CSBGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS3170.pdf
(230 pages)
Specifications of DS3170N+
Function
Single-Chip Transceiver
Interface
DS3, E3
Number Of Circuits
1
Voltage - Supply
3.135 V ~ 3.465 V
Current - Supply
120mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
100-LBGA
Includes
DS3 Framers, E3 Framers, HDLC Controller, On-Chip BERTs
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
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TNEG
TXP
TXN
RXP
RXN
RLCLK
PIN NAME
TYPE
Oa
Oa
Ia
Ia
O
I
Transmit Negative AMI / Line OH Mask
TNEG: When the port line is configured for B3ZS, HDB3 or AMI mode and the
transmit line interface pins are enabled
indicates that a negative pulse should be transmitted on the line. The signal is
updated on the positive clock edge of the referenced clock pin if the clock pin signal is
not inverted, otherwise it is updated on the falling edge of the clock. The signal is
typically referenced to the TLCLK line clock output pins, but it can be referenced to
the TCLKO, TCLKI, RLCLK or RCLKO pins.
This output signal can be inverted.
o
o
Transmit Positive Analog
TXP: This pin and the TXN pin form a differential AMI output which is coupled to the
outbound 75Ω coaxial cable through a 2:1 step-down transformer
output is enabled when the TX LIU is enabled and the output is enabled to be driven.
When it is not enabled, it is in a high impedance state.
o
o
Transmit Negative Analog
TXN: This pin and the TXP pin form a differential AMI output which is coupled to the
outbound 75Ω coaxial cable through a 2:1 step-down transformer
output is enabled when the TX LIU is enabled and the output is enabled to be driven.
When it is not enabled, it is in a high impedance state.
o
o
Receive Positive analog
RXP: This pin and the RXN pin form a differential AMI input which is coupled to the
outbound 75Ω coaxial cable through a 2:1 step-up transformer
is used when the RX LIU is enabled and is ignored when the LIU is disabled.
o
o
Receive Negative analog
RXN: This pin and the RXP pin form a differential AMI input which is coupled to the
outbound 75Ω coaxial cable through a 2:1 step-up transformer
is used when the LIU is enabled and is ignored when the LIU is disabled.
o
o
Receive Line Clock Input
RLCLK: This clock is typically used for the reference clock for the RPOS / RDAT,
RNEG / RLCV signals but can also be used as the reference clock for the RSER,
RSOFO / RDEN, TSOFI, TSER, TSOFO / TDEN, TPOS / TDAT and TNEG signals.
This input is ignored when the LIU is enabled.
This input signal can be inverted.
o
o
DS3: 44.736 Mbps +20ppm
E3: 34.368 Mbps +20ppm
DS3: 44.736 Mbps +20ppm
E3: 34.368 Mbps +20ppm
DS3: 44.736 Mbps +20ppm
E3: 34.368 Mbps +20ppm
DS3: 44.736 Mbps +20ppm
E3: 34.368 Mbps +20ppm
DS3: 44.736 Mbps +20ppm
E3: 34.368 Mbps +20ppm
DS3: 44.736 MHz +20 ppm
E3: 34.368 MHz +20 ppm
28 of 230
PIN DESCRIPTION
(PORT.CR2.
DS3170 DS3/E3 Single-Chip Transceiver
TLEN), a high on this pin
(Figure
(Figure
(Figure
(Figure
2-1). This input
2-1). This input
2-1). This
2-1). This
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