參數(shù)資料
型號： XRT86VL3X
廠商： Exar Corporation
元件分類： 通信及網(wǎng)絡
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)： 39/149頁
文件大?。?/td> 1274K
代理商： XRT86VL3X
XRT86VL3X
32
REV. 1.2.0
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
Figure 32
below shows the timing diagram of the input and output signals associated with the DS1 Transmit
Overhead Input Interface module in N or SLC96 framing format mode.
3.1.4
Configure the DS1 Transmit Overhead Input Interface module as source of the Remote
Signaling (R) bits in T1DM framing format mode
The R bits in T1DM framing format mode can be inserted from:
DS1 Transmit Overhead Input Interface Block
DS1 Transmit HDLC Controller
DS1 Transmit Serial Input Interface.
The Transmit Data Link Source Select bits of the Transmit Data Link Select Register (TDLSR) controls the
insertion of data link bits into the R bits in T1DM framing format mode. The table below shows configuration of
the Transmit Data Link Source Select bits of the Transmit Data Link Select Register (TDLSR).
If the Transmit Data Link Source Select bits of the Transmit Data Link Select Register are set to 10, the
Transmit Overhead Input Interface Block becomes input source of the R bits. Since R bit presents in Timeslot
24 of every T1DM frame, therefore, bandwidth of T1DM data link channel is 8KHz.
Figure 33
below shows the timing diagram of the input and output signals associated with the DS1 Transmit
Overhead Input Interface module in T1DM framing format mode.
F
IGURE
32. DS1 T
RANSMIT
O
VERHEAD
I
NPUT
T
IMING
IN
N
OR
SLC96 F
RAMING
F
ORMAT
M
ODE
TRANSMIT DATA LINK SELECT REGISTER (TDLSR) (ADDRESS = 0XN10AH)
B
IT
N
UMBER
B
IT
N
AME
B
IT
T
YPE
B
IT
D
ESCRIPTION
1-0
Transmit Data Link
Source Select
R/W
00 - The Remote Signaling bits are inserted into the framer through either
the LAPD controller or the SLC96 buffer.
01 - The Remote Signaling bits are inserted into the framer through the
Transmit Serial Data input Interface via the TxSer_n pins.
10 - The Remote Signaling bits are inserted into the framer through the
Transmit Overhead Input Interface via the TxOH_n pins.
11 - The Remote Signaling bits are forced to one by the framer.
F
IGURE
33. DS1 T
RANSMIT
O
VERHEAD
I
NPUT
I
NTERFACE
MODULE
IN
T1DM F
RAMING
F
ORMAT
MODE
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