DS3181 Maxim Integrated Products, DS3181 Datasheet - Page 50

• Manufacturer Part Number: DS3181
• Description: Network Controller & Processor ICs DS3-E3 ATM-Packet PH Y with Built-in Line
• Manufacturer: Maxim Integrated Products

Specifications of DS3181

• Product: Framer
• Number Of Transceivers: 1
• Data Rate: 44.736 Mbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 280 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: TEBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

RPOSn /
RNEGn /
RLCLKn
ROHMIn
RLCVn /
RDATn
PIN
TYPE
I
I
I
Receive Line Clock Input
RLCLKn: This clock is typically used for the reference clock for the RPOSn / RDATn,
RNEGn / RLCVn / ROHMIn signals but can also be used as the reference clock for
the RSERn, RSOFOn / RDENn / RFOHENOn, RFOHENIn, TOHMIn / TSOFIn,
TFOHn / TSERn, TFOHENIn, TSOFOn / TDENn / TFOHENOn, TPOSn / TDATn and
TNEGn / TOHMOn signals. This input is ignored when the LIU is enabled.
This input signal can be inverted.
o
o
o
Receive Positive AMI / Data
RPOSn: When the port line is configured for B3ZS, HDB3 or AMI mode and the
framer is not configured for one of the “-OHM” modes and the LIU is disabled, a high
on this pin indicates that a positive pulse has been detected using an external LIU.
The signal is sampled on the positive clock edge of the referenced clock pin if the
clock pin signal is not inverted, otherwise it is sampled on the falling edge of the clock.
The signal is typically referenced to the RLCLKn line clock input pins, but it can be
referenced to the RCLKOn output pins.
This input signal can be inverted.
RDATn: When the port line interface is configured for UNI mode or the framer is
configured for one of the “-OHM” modes, the un-encoded receive signal is input on
this pin. The signal is sampled on the positive clock edge of the referenced clock pin if
the clock pin signal is not inverted, otherwise it is sampled on the falling edge of the
clock. The signal is typically referenced to the RLCLKn line clock input pins, but it can
be referenced to the RCLKOn output pins.
This input signal can be inverted.
o
o
o
Receive Negative AMI / Line Code Violation / Line OH Mask input
RNEGn: When the port line is configured for B3ZS, HDB3 or AMI mode and the
framer is not configured for one of the “-OHM” modes and the LIU is disabled, a high
on this pin indicates that a negative pulse has been detected using an external LIU.
The signal is sampled on the positive clock edge of the referenced clock pin if the
clock pin signal is not inverted, otherwise it is sampled on the falling edge of the clock.
The signal is typically referenced to the RLCLKn line clock input pins, but it can be
referenced to the RCLKOn output pins.
This input signal can be inverted.
o
o
o
RLCVn: When the port line interface is configured for UNI mode and the framer is not
configured for one of the “-OHM” modes, the BPV counter in the encoder/decoder
block is incremented each clock when this signal is high. The signal is sampled on the
positive clock edge of the referenced clock pin if the clock pin signal is not inverted,
otherwise it is sampled on the falling edge of the clock. The signal is typically
referenced to the RLCLKn line clock input pins, but it can be referenced to the
RCLKOn output pins.
This input signal can be inverted.
ROHMIn: When the port framer is configured for one of the “-OHM” modes, this signal
is used to mark the overhead bits on the RDATn pins when it is high. The DS318x will
ignore overhead bits. The signal is sampled on the positive clock edge of the
referenced clock pin if the clock pin signal is not inverted, otherwise it is sampled on
the falling edge of the clock. The signal is typically referenced to the RLCLKn line
clock input pins, but it can be referenced to the RCLKOn output pins.
This input signal can be inverted.
DS3: 44.736 MHz +20 ppm
E3: 34.368 MHz +20 ppm
CC52: 52 MHz +20 ppm
DS3: 44.736 Mbps +20ppm
E3: 34.368 Mbps +20ppm
CC52: 52 Mbps +20ppm
DS3: 44.736 Mbps +20ppm
E3: 34.368 Mbps +20ppm
CC52: 52 Mbps +20ppm
50
FUNCTION