XRT84L38 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT84L38' PDF : 453 Pages View PDF
REV. 1.0.1
XRT84L38
OCTAL T1/E1/J1 FRAMER
RECEIVE DECODER LIU INTERFACE
(Framer Channel Number indicated by _n)
SIGNAL NAME
RxPOS_0
RxPOS_1
RxPOS_2
RxPOS_3
RxPOS_4
RxPOS_5
RxPOS_6
RxPOS_7
PIN #
E4
G3
H1
L2
R2
W2
AA2
AC2
TYPE
DESCRIPTION
I Receive Positive Polarity Pulse—Framer_n:
This input pin is intended to be connected to the RxPOS or RPDATA output of
the LIU (Line Interface Unit) IC associated with Framer_n.
The LIU will assert this input signal (pulse it "High"), when it is receiving a posi-
tive-polarity pulse from the line. This input signal is sampled and latched into the
Framer, on the user-selectable edge (rising or falling) of the RxLineClk_n signal.
RxNEG_0
C1
RxNEG_1
F1
RxNEG_2
J3
RxNEG_3
L3
RxNEG_4
T2
RxNEG_5
W1
RxNEG_6
AB1
RxNEG_7
AD1
RxLineCLK_0
D1
RxLineCLK_1
G1
RxLineCLK_2
K4
RxLineCLK_3
M4
RxLineCLK_4
T3
RxLineCLK_5
W4
RxLineCLK_6
AA4
RxLineCLK_7
AE2
I Receive Negative Polarity Pulse—Framer_n:
This input pin is intended to be connected to the RxNEG or RNDATA output of the
LIU (Line Interface Unit) associated with Framer_n.
The LIU will assert this input signal (pulse it "High"), when it is receiving a nega-
tive-polarity pulse from the line. This input signal is sampled and latched into the
Framer, on the user-selectable edge (rising or falling) of the RxLineClk_n signal.
I Receive Line Clock Input—Framer_n:
This input pin is intended to be connected to the RxClk output of the LIU (Line
Interface Unit) associated with Framer_n.
Framer_n uses the user-selectable edge of this signal to sample and latch the
signals at the RxPOS_n and RxNEG_n input pins.
TRANSMIT ENCODER LIU INTERFACE
(Framer Channel Number indicated by _n)
SIGNAL NAME
PIN #
TYPE
DESCRIPTION
TxPOS_0
TxPOS_1
TxPOS_2
TxPOS_3
TxPOS_4
TxPOS_5
TxPOS_6
TxPOS_7
E3
O Transmit Positive Polarity Pulse—Framer_n:
H3
This output pin is intended to be connected to the TxPOS or TPDATA input of
K3
the LIU (Line Interface Unit) associated with Framer_n.
L1
Framer_n will assert this signal when it wishes for the Line Interface Unit (LIU)
T4
associated with Framer_n, to transmit a positive polarity pulse on the line.
W3
AB2
AD2
TxNRZ_0
TxNRZ_1
TxNRZ_2
TxNRZ_3
TxNRZ_4
TxNRZ_5
TxNRZ_6
TxNRZ_7
E3
O Transmit Non Return to Zero:
H3
Unipolar output for transmitted data. TxNRZ_n includes the results of bit 7 stuff-
K3
ing, but does not include HDB3 encoding.
L1
T4
W3
AB2
AD2
23
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