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參數資料
型號: XRT86VL38IB-F
廠商: Exar Corporation
文件頁數: 39/160頁
文件大?。?/td> 0K
描述: IC LIU/FRAMER T1/E1/J1 8CH 420BG
標準包裝: 40
控制器類型: T1/E1/J1 調幀器,LIU
電源電壓: 3.3V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 420-BBGA
供應商設備封裝: 420-PBGA
包裝: 托盤
其它名稱: 1016-1487
XRT86VL38IB-F-ND
XRT86VL38
128
REV. V1.2.0
OCTAL T1/E1/J1 FRAMER/LIU COMBO - T1 REGISTER DESCRIPTION
2.0
LINE INTERFACE UNIT (LIU SECTION) REGISTERS
TABLE 108: LIU CHANNEL CONTROL REGISTER 0 (LIUCCR0)
HEX ADDRESS: 0X0FN0
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7
QRSS_n/
PRBS_n
R/W
0
QRSS/PRBS Select Bits
These bits are used to select between QRSS and PRBS.
0 = PRBS_n (215 - 1)
1 = QRSS_n (220 - 1)
6
PRBS_Rx_n/
PRBS_Tx_n
R/W
0
PRBS Receive/Transmit Select:
This bit is used select where the output of the PRBS Generator is
directed.
0 = PRBS Generator is output on TTIP and TRING
1 = PRBS Generator is output on RPOS and RCLK
5
RXON_n
R/W
0
Receiver ON:
This bit permits the user to either turn on or turn off the Receive Sec-
tion of XRT86VL38. If the user turns on the Receive Section, then
XRT86VL38 will begin to receive the incoming data-stream via the
RTIP and RRING input pins.
Conversely, if the user turns off the Receive Section, then the entire
Receive Section except the MCLKIN Phase Locked Loop (PLL) will
be powered down.
0 = Shuts off the Receive Section of XRT86VL38.
1 = Turns on the Receive Section of XRT86VL38.
4-0
EQC[4:0]
R/W
00000
Equalizer Control [4:0]:
These bits are used to control the transmit pulse shaping, transmit
line build-out (LBO) and receive sensitivity level.
The Transmit Pulse Shape can be controlled by adjusting the Trans-
mit Line Build-Out Settings for different cable length in T1 mode.
Transmit pulse shape can also be controlled by using the Arbitrary
mode, where users can specify the amplitude of the pulse shape by
using the 8 Arbitrary Pulse Segments provided in the LIU registers
(0x0Fn8-0xnFnF), where n is the channel number.
The XRT86VL38 device supports both long haul and short haul
applications which can also be selected using the EQC[4:0] bits.
Table 109.presents the corresponding Transmit Line Build Out and
Receive Sensitivity settings using different combinations of these
five EQC[4:0] bits.
PBRS
Generator
Tx
TTIP
TRING
+
-
Bit 6 = "0"
PBRS
Generator
Rx
RPOS
RNEG
+
-
Bit 6 = "1"
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