参数资料
型号: WJLXT385LEB1
厂商: INTEL CORP
元件分类: 数字传输电路
英文描述: DATACOM, PCM TRANSCEIVER, PQFP144
封装: ROHS COMPLIANT, LQFP-144
文件页数: 12/138页
文件大小: 1545K
代理商: WJLXT385LEB1
109
Document Number: 249252
Revision Number: 006
Revision Date: 19-Jan-2006
IntelLXT385 Octal E1 S/H PCM Transceiver with JA
11.1
Intel LXT385 Transceiver Timing
Table 60 lists transmit timing characteristics for the LXT385 ransceiver.
Figure 19 is a transmit timing diagram for the LXT385 ransceiver.
Figure 19. Intel
LXT385 Transceiver - Transmit Timing
Table 60. Intel
LXT385 Transceiver Transmit Timing Characteristics
Parameter
Sym.
Min.
Typ.
Max.
Unit
Test
Condition
Master Clock Timing
Master clock (MCLK) frequency
2.048
MHz
Master clock tolerance
-50
+50
ppm
Master clock duty cycle
40
60
%
Output Transmit Timing
Pulse width
219
244
269
ns
Delay time: OE low to driver high impedance
1
μs
Delay time: TCLK low to driver high
impedance
50
60
75
μs
TCLK, TPOS, TNEG Timing
TCLK frequency
2.048
MHz
TCLK average tolerance when using JA in
transmit path
-50
+50
ppm
TCLK tolerance
-50
+50
ppm
TCLK burst rate
20
MHz
Gapped
transmit clock
TCLK duty cycle
10
90
%
NRZ mode
TPOS/TNEG pulse width (RZ mode)
236
252
ns
RZ mode
(TCLK = High
for >16 MCLK
clock cycles)
TPOS/TNEG to TCLK setup time
tSUT
20
ns
TCLK to TPOS/TNEG hold time
tHT
20
ns
TPOS
TNEG
TCLK
tHT
tSUT
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