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參數(shù)資料
| 型號： | XRT86VL3x |
| 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)： | 93/153頁 |
| 文件大?。?/td> | 1316K |
| 代理商： | XRT86VL3X |
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XRT86VL3X
86
REV. 1.2.2
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
In Extended Super-Frame framing mode, frame number 6, 12, 18 and 24 are signaling frames. In these
frames, the least significant bit of all twenty-four timeslots is 'robbed' to carry call state information. The bit in
frame 6 is called the A bit, the bit in frame 12 is called the B bit, the bit in frame 18 is called the C bit and the bit
in frame 24 is called the D bit. The combination of A, B, C and D defines the state of the call for the particular
timeslot that these signaling bits are located in.
8.3.1
Configure the framer to transmit Robbed-bit Signaling
The XRT86VL3x framer supports transmission of Robbed-bit Signaling in ESF, SF and SLC96 framing
formats. Signaling bits can be inserted into the outgoing DS1 frame through the following:
Signaling data is inserted from Transmit Signaling Control Registers (TSCR) of each timeslot
Signaling data is inserted from TxSig_n pin
Signaling data is embedded into the input PCM data coming from the Terminal Equipment
8.3.2
Insert Signaling Bits from TSCR Register
The four most significant bits of the Transmit Signaling Control Register (TSCR) of each timeslot can be used
to store outgoing signaling data. The user can program these bits through the microprocessor access. If the
XRT86VL3x framer is configured to insert signaling bits from the TSCR registers, the DS1 Transmit Framer
block will strip off the least significant bits of each time slot in the signaling frames and replace it with the
signaling bit stored inside the TSCR registers. The insertion of signaling bits into PCM data is done on a per-
channel basis.
In SF or SLC96 mode, the user can control the XRT86VL3x framer to transmit no signaling (transparent),
two-code signaling, or four-code signaling. Two-code signaling is done by substituting the least significant bit
(LSB) of the specific channel in frame 6 and 12 with the content of the Signaling bit A of the specific TSCR
register.
Four-code signaling is done by substituting the LSB of channel data in frame 6 with the Signaling bit A and the
LSB of channel data in frame 12 with the Signaling bit B of the specific channel's TSCR register. If sixteen-code
signaling is selected in SF format, only the Signaling bit A and Signaling bit B information are used.
In ESF mode, the user can control the XRT86VL3x framer to transmit no signaling (transparent) by disable
signaling insertion, two-code signaling, four-code signaling or sixteen code signaling. Two-code signaling is
done by substituting the least significant bit (LSB) of the specific channel in frame 6, 12, 18 and 24 with the
content of the Signaling bit A of the specific TSCR register.
Four-code signaling is done by substituting the LSB of channel data in frame 6 and frame 18 with the Signaling
bit A and the LSB of channel data in frame 12 and frame 24 with the Signaling bit B of the specific channel's
TSCR register.
F
RAME
N
UMBER
S
IGNALING
B
IT
6
A
12
B
F
RAME
N
UMBER
S
IGNALING
B
IT
6
A
12
B
18
C
24
D
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT86VL3X_07 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT86VL3X | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT91L30_0611 | STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
| XRT91L306 | STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
| XRT91L30IQ | STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT86VL3X_07 | 制造商:EXAR 制造商全稱:EXAR 功能描述:T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION |
| XRT86VL3X_0710 | 制造商:EXAR 制造商全稱:EXAR 功能描述:T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION |
| XRT86VX38 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER/LIU COMBO - HARDWARE DESCRIPTION |
| XRT86VX38_09 | 制造商:EXAR 制造商全稱:EXAR 功能描述:8-CHANNEL T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION |
| XRT86VX38_0906 | 制造商:EXAR 制造商全稱:EXAR 功能描述:OCTAL T1/E1/J1 FRAMER/LIU COMBO - HARDWARE DESCRIPTION |
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