參數(shù)資料
型號(hào): XRT83SL216IB
廠商: Exar Corporation
文件頁(yè)數(shù): 14/42頁(yè)
文件大小: 0K
描述: IC LIU SH E1 16CH 289STBGA
標(biāo)準(zhǔn)包裝: 84
類型: 線路接口裝置(LIU)
驅(qū)動(dòng)器/接收器數(shù): 16/16
規(guī)程: T1,E1,J1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 289-LFBGA
供應(yīng)商設(shè)備封裝: 289-STBGA(15x15)
包裝: 托盤
XRT83SL216
19
REV. 1.0.0
16-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
2.0
TRANSMIT PATH LINE INTERFACE
The transmit path consists of 16 independent E1 transmitters. The following section describes the complete
transmit path from TCLK/TPOS/TNEG inputs to TTIP/TRING outputs. A simplified block diagram of the
transmit path is shown in Figure 10.
2.1
TCLK/TPOS/TNEG Digital Inputs
In dual rail mode, TPOS and TNEG are the digital inputs for the transmit path. In single rail mode, TNEG can
be tied to ground. The XRT83SL216 can be programmed to sample the inputs on either edge of TCLK. By
default, data is sampled on the falling edge of TCLK. To sample data on the rising edge of TCLK, set TCLKinv
to "1" in the appropriate global register. Figure 11 is a timing diagram of the transmit input data sampled on the
falling edge of TCLK. Figure 12 is a timing diagram of the transmit input data sampled on the rising edge of
TCLK. The timing specifications are shown in Table 2.
FIGURE 11. TRANSMIT DATA SAMPLED ON FALLING EDGE OF TCLK
FIGURE 12. TRANSMIT DATA SAMPLED ON RISING EDGE OF TCLK
FIGURE 10. SIMPLIFIED BLOCK DIAGRAM OF THE TRANSMIT PATH
HDB3
Encoder
Tx Jitter
Attenuator
Timing
Control
Tx Pulse Shaper
Line Driver
TTIP
TRING
TCLK
TNEG
TPOS
TCLK
TPOS
or
TNEG
TCLK
R
TCLK
F
T
HO
T
SU
TCLK
TPOS
or
TNEG
TCLK
F
TCLK
R
T
HO
T
SU
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