DS3181 Maxim Integrated Products, DS3181 Datasheet - Page 37

• 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

7
The line interface modes provide the following functions:
7.1 DS3HDB3/B3ZS/AMI LIU Mode
When the “- OHM” framing modes are enabled, the line interface is forced into the unipolar (UNI) mode. The
TZCDS and RZCDS bits in the line encoder/decoder block select between no encoding/decoding (AMI) and
encoding/decoding (B3ZS, HDB3). When the HDB3/B3ZS line decoder/encoder is enabled, the framing modes (FM
bits) select between B3ZS and HDB3 line coding. DS3 and CC52 frame modes select the B3ZS line code while the
E3 modes select the HDB3 line code.
Table 7-1. HDB3/B3ZS/AMI LIU Mode Configuration Registers
JA Off, B3ZS or HDB3
JA RX, B3ZS or HDB3
JA TX, B3ZS or HDB3
JA Off, AMI
JA RX, AMI
JA TX, AMI
1. Enabling/disabling of RX and TX LIU.
2. Enabling/Disabling of jitter attenuator (JA).
3. Selection of the location of JA, i.e., RX or TX path.
4. Selection of the line coding type, i.e., B3ZS/HDB3/AMI or UNI.
MAJOR LINE INTERFACE OPERATING MODES
MODE
LM[2:0]
001
010
011
001
010
011
LINE.RCR.RZSD
LINE.TCR.TZSD
AND
0
0
0
1
1
1
37
PORT.CR2
TLEN
0
0
0
0
0
0