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): 56/70頁
文件大小: 872K
代理商: PCT789T-A
PC-TEL, Inc.
56
1789W0DOCDAT06A-0299
PCT1789W DATA SHEET
S
WITCHING
C
HARACTERISTICS
!
PRELIMINARY
PRELIMINARY
Serial Interface (DCE = 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 25 Switching Characteristics—Serial Interface (DCE = 0)
Figure 17 Serial Interface Timing Diagram (DCE = 0)
Parameter
Cycle time, SCLK
Symbol
t
c
t
dty
t
d1
t
d2
t
d3
t
su
t
h
t
sfc
t
hfc
Min
354
Typ
Max
Unit
ns
1/256 Fs
SCLK duty cycle
50
%
Delay time, SCLK
to FSYNC
Delay time, SCLK
to SDO valid
Delay time, SCLK
to FSYNC
Setup time, SDI before SCLK
Hold time, SDI after SCLK
Setup time, FC
before SCLK
Hold time, FC
after SCLK
10
ns
20
ns
10
ns
25
ns
20
ns
40
ns
40
ns
SCLK
V
OH
V
OL
D15
D14
D1
D0
... D2
16-bit
SDO
D15
D14
D1
D0
... D2
16-bit
SDI
t
d2
t
su
t
h
FSYNC
(mode 1)
t
d3
t
c
t
hfc
t
sfc
FC
FSYNC
(mode 0)
t
d1
t
d3
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