參數(shù)資料
型號: XRT83VSH316IB
廠商: EXAR CORP
元件分類: 數(shù)字傳輸電路
英文描述: 16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
中文描述: DATACOM, PCM TRANSCEIVER, PBGA316
封裝: 21 X 21 MM, STBGA-316
文件頁數(shù): 33/96頁
文件大?。?/td> 600K
代理商: XRT83VSH316IB
PRELIMINARY
16-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
XRT83VSH316
31
REV. P1.0.3
4.1
In dual rail mode, TPOS and TNEG are the digital inputs for the transmit path. In single rail mode, TNEG has
no function and can be left unconnected. The XRT83VSH316 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 TCLKE to "1" in the appropriate global register.
Figure 17
is a timing diagram of the transmit
input data sampled on the falling edge of TCLK.
Figure 18
is a timing diagram of the transmit input data
sampled on the rising edge of TCLK. The timing specifications are shown in
Table 6
.
F
IGURE
17. T
RANSMIT
D
ATA
S
AMPLED
ON
F
ALLING
E
DGE
OF
TCLK
TCLK/TPOS/TNEG Digital Inputs
F
IGURE
18. T
RANSMIT
D
ATA
S
AMPLED
ON
R
ISING
E
DGE
OF
TCLK
N
OTE
:
VDD=3.3V ±5%, VDDc=1.8V ±5%, T
A
=25°C, Unless Otherwise Specified
T
ABLE
6: T
IMING
S
PECIFICATIONS
FOR
TCLK/TPOS/TNEG
P
ARAMETER
S
YMBOL
M
IN
T
YP
M
AX
U
NITS
TCLK Duty Cycle
T
CDU
30
50
70
%
Transmit Data Setup Time
T
SU
50
-
-
ns
Transmit Data Hold Time
T
HO
30
-
-
ns
TCLK Rise Time (10% to 90%)
TCLK
R
-
-
40
ns
TCLK Fall Time (90% to 10%)
TCLK
F
-
-
40
ns
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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