參數(shù)資料
型號: PCT789T-A
英文描述: PCI HSP56 World MicroModem/PCT303DW/PCT1789W
中文描述: 世界MicroModem/PCT303DW/PCT1789W的PCI HSP56
文件頁數(shù): 57/70頁
文件大?。?/td> 872K
代理商: PCT789T-A
PC-TEL, Inc.
57
1789W0DOCDAT06A-0299
PCT1789W DATA SHEET
S
WITCHING
C
HARACTERISTICS
!
PRELIMINARY
PRELIMINARY
Serial Interface (DCE = 1, FSD = 0)
Given values are: V
A
= charge pump, V
D
= +3.3 V ± 5%; T
A
= 70 °C for K-grade, 85 °C for B-grade; C
L
= 20 pF.
All timing is referenced to the 50% level of the waveform. Input test levels are: V
IH
= V
D
– 0.4V, V
IL
= 0.4V.
Table 26 Switching Characteristics—Serial Interface (DCE = 1, FSD = 0)
Figure 18 Serial Interface Timing Diagram (DCE = 1, FSD = 0)
Parameter
SCLK duty cycle
Symbol
t
dty
t
d1
t
d2
t
d3
t
d4
t
su
t
h
t
su2
t
h2
Min
Typ
50
Max
Unit
%
Delay time, SCLK
to FSYNC
Delay time, SCLK
to FSYNC
Delay time, SCLK
to SDO valid
Delay time, SCLK
to SDO Hi-Z
Setup time, SDO before SCLK
Hold time, SDO after SCLK
Setup time, SDI before SCLK
Hold time, SDI after SCLK
10
ns
10
ns
20
ns
20
ns
25
ns
20
ns
25
ns
20
ns
SCLK
FSYNC
(mode 1)
FSYNC
(mode 0)
SDO
SDI
D15
D14
D1
D0
D15
D14
D13
D0
t
su2
t
h2
t
su
t
h
t
d3
t
d4
t
d1
t
d2
t
d1
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