DS3173N datasheet(21/232 Pages) DALLAS

Part #	DS3173N

Description	Single/Dual/Triple/Quad DS3/E3 Single-Chip Transceivers

PDF	232 Pages

Scroll/Zoom	100%

Manufacturer	DALLAS [Dallas Semiconductor]

Direct Link	https://www.maximintegrated.com/en.html

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7 MAJOR LINE INTERFACE OPERATING MODES

The line interface modes provide the following functions:

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.

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

LM[2:0]

LINE.TCR.TZSD &

LINE.RCR.RZSD

TLEN

PORT.CR2

JA Off, B3ZS or HDB3

001

JA RX, B3ZS or HDB3

010

JA TX, B3ZS or HDB3

011

JA Off, AMI

001

JA RX, AMI

010

JA TX, AMI

011

DS3173N Datasheet(PDF) 21 Page - Dallas Semiconductor