XRT86VL34 datasheet(29/156 Pages) EXAR

tên linh kiện	XRT86VL34

Giải thích chi tiết về linh kiện	QUAD T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION

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XRT86VL34

REV. V1.2.0

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

1-0

TxDL[1:0]

R/W

Transmit Data Link Source Select [1:0]

These two bits specify the source for data link bits that will be

inserted in the outbound T1 frames. The table below shows the three

different sources from which data link bits can be inserted.

TABLE 9: TRANSMIT SIGNALING AND DATA LINK SELECT REGISTER (TSDLSR)

HEX ADDRESS:0Xn10A

BIT

FUNCTION

TYPE

DEFAULT

DESCRIPTION-OPERATION

TXDL[1:0]

SOURCE FOR DATA LINK BITS

Transmit LAPD Controller #1 / SLC96 Buffer - The

Data Link bits are inserted from the Transmit LAPD

Controller #1 or SLC96 Buffer.

NOTE:

LAPD Controller #1 is the only LAPD

controller that can be used to transport

LAPD messages through the data link bits

TxSER_n input pin - The Data Link bits are

inserted from the transmit serial data input pin

(TxSER_n) pin.

TxOH_n input pin - The Data Link bits are inserted

from the transmit overhead input pin. (TxOH_n)

Data Link bits are forced to 1.

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