參數(shù)資料
型號: XRT86VL38_2
廠商: Exar Corporation
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 31/160頁
文件大小: 860K
代理商: XRT86VL38_2
XRT86VL38
26
REV. V1.2.0
OCTAL T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
T
ABLE
11: T
RANSMIT
S
IGNALING
AND
D
ATA
L
INK
S
ELECT
R
EGISTER
(TSDLSR)
H
EX
A
DDRESS
:0
X
n10A
B
IT
F
UNCTION
T
YPE
D
EFAULT
D
ESCRIPTION
-O
PERATION
7
Reserved
-
-
Reserved
6
Reserved
-
-
Reserved
5-4
TxDLBW[1:0]
R/W
00
Transmit Data Link Bandwidth[1:0]
These two bits are used to select the bandwidth for data link mes-
sage transmission. Data Link messages can be transmitted at a
4kHz rate or at a 2kHz rate on odd or even framing bits depending on
the configuration of these three bits. The table below specifies the
four different configurations.
N
OTE
:
This bit only applies to T1 ESF framing format. For SLC96
and N framing formats, FDL is a 4kHz data link channel. For
T1DM, FDL is a 8kHz data link channel.
3-2
TxDE[1:0]
R/W
00
Transmit D/E TimeSlot Source Select[1:0]:
These two bits specify the source for transmit D/E time slots. The
table below shows the different sources from which D/E time slots
can be inserted.
T
X
DLBW[1:0]
T
RANSMIT
D
ATA
L
INK
B
ANDWIDTH
S
ELECTED
00
Data link bits are inserted in every frame. Facility
Data Link Bits (FDL) is a 4kHz data link channel.
01
Data link bits are inserted in every other frame.
Facility Data Link Bits (FDL) is a 2kHz data link
channel carried by odd framing bits (Frames
1,5,9.....)
10
Data link bits are inserted in every other frame.
Facility Data Link Bits (FDL) is a 2kHz data link
channel carried by even framing bits (Frames
3,7,11.....)
11
Reserved
T
X
DE[1:0]
S
OURCE
FOR
T
RANSMIT
D/E T
IMESLOTS
00
TxSER_n input pin - The D/E time slots are
inserted from the transmit serial data input pin
(TxSER_n) pin.
01
Transmit LAPD Controller - The D/E time slots are
inserted from LAPD Controller.
10
Reserved
11
TxFRTD_n - The D/E time slots are inserted from
the transmit fractional input pin.
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