參數(shù)資料
型號: LXT386
廠商: Intel Corp.
英文描述: QUAD T1/E1/J1 Transceiver
中文描述: 四T1/E1/J1收發(fā)器
文件頁數(shù): 59/78頁
文件大?。?/td> 500K
代理商: LXT386
QUAD T1/E1/J1 Transceiver
LXT386
Datasheet
59
Table 42. Analog Test Port Characteristics
Parameter
Sym
Min
Typ
Max
Unit
Test Condition
3 dB bandwidth
At13db
-
5
-
MHz
Input voltage range
At1iv
0
-
VCC
V
Output voltage range
At2ov
0
-
VCC
V
Table 43. Transmit Timing Characteristics
Parameter
Sym
Min
Typ
Max
Unit
Test Condition
Master clock frequency
E1
MCLK
2.048
MHz
T1
MCLK
1.544
MHz
Master clock tolerance
-100
100
ppm
Master clock duty cycle
40
60
%
Output pulse width
E1
Tw
219
244
269
ns
T1
Tw
291
324
356
ns
Transmit clock frequency
E1
Tclke1
-
2.048
-
MHz
T1
Tclkt1
-
1.544
-
MHz
Transmit clock tolerance
Tclkt
-50
+50
ppm
Transmit clock burst rate
Tclkb
-
20
MHz
Gapped transmit clock
Transmit clock duty cycle
Tdc
10
90
%
NRZ mode
E1 TPOS/TNEG pulse width (RZ mode)
Tmpwe1
236
252
ns
RZ mode (TCLK = H for
>16 clock cycles)
TPOS/TNEG to TCLK setup time
Tsut
20
-
-
ns
TCLK to TPOS/TNEG hold time
Tht
20
-
-
ns
Delay time OE Low to driver High Z
Toez
-
-
1
μ
s
Delay time TCLK Low to driver High Z
Ttz
50
60
75
μ
s
Figure 18. Transmit Clock Timing Diagram
TPOS
TNEG
TCLK
tHT
tSUT
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