DS3172N Maxim Integrated, DS3172N Datasheet - Page 21

• Manufacturer Part Number: DS3172N
• Description: Network Controller & Processor ICs Dual DS3/E3 Single Chip Transceiver
• Manufacturer: Maxim Integrated

Specifications of DS3172N

• Part # Aliases: 90-31720-N00

7 MAJOR LINE INTERFACE OPERATING MODES
The line interface modes provide the following functions:
7.1 DS3HDB3/B3ZS/AMI LIU 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. The DS3 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
MODE
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.
LM[2:0]
001
010
011
001
010
011
LINE.TCR.TZSD &
LINE.RCR.RZSD
0
0
0
1
1
1
21
TLEN
PORT.CR2
0
0
0
0
0
0