XRT86VL34 datasheet(55/156 Pages) EXAR

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XRT86VL34

REV. V1.2.0

QUAD T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION

1-0

RxIMODE[1:0]

R/W

Receive Interface Mode Selection[1:0]

This bit determines the receive backplane interface speed. The exact func-

tion of these two bits depends on whether Receive Multiplexed mode is

enabled or disabled. Table 33 and Table 34 shows the functions of these two

bits for non-multiplexed and multiplexed modes.:

TABLE 32: RECEIVE INTERFACE CONTROL REGISTER (RICR)

HEX ADDRESS: 0XN122

BIT

FUNCTION

TYPE

DEFAULT

DESCRIPTION-OPERATION

TABLE 33: RECEIVE INTERFACE SPEED WHEN MULTIPLEXED MODE IS

DISABLED (TXMUXEN = 0)

RXIMODE[1:0]

RECEIVE INTERFACE SPEED

1.544Mbit/s Base Rate Mode

Receive backplane interface signals include:

RxSERCLK is an input or output clock at 1.544MHz

RxSYNC is an input or output signal which indicates the

receive singe frame boundary

RxSER is the base-rate data output

2.048Mbit/s High-Speed MVIP Mode:

Receive backplane interface signals include:

RxSERCLK is an input clock at 2.048MHz

RxSYNC is an input signal which indicates the receive

singe frame boundary

RxSER is the high-speed data output

4.096Mbit/s High-Speed Mode:

Receive backplane interface signals include:

RxSERCLK is an input clock at 4.096MHz

RxSYNC is an input signal which indicates the receive

singe frame boundary

RxSER is the high-speed data output

8.192Mbit/s High-Speed Mode:

Receive backplane interface signals include:

RxSERCLK is an input clock at 8.192MHz

RxSYNC is an input signal which indicates the receive

singe frame boundary

RxSER is the high-speed data output

XRT86VL34 Datasheet(PDF) 55 Page - Exar Corporation

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