參數(shù)資料
型號: PE-65967
廠商: Exar Corporation
英文描述: E3/DS3/STS-1 LINE INTERFACE UNIT
中文描述: E3/DS3/STS-1線路接口單元
文件頁數(shù): 21/55頁
文件大?。?/td> 608K
代理商: PE-65967
á
XRT7300
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.1.1
17
MICROPROCESSOR SERIAL INTERFACE TIMING (SEE FIGURE 9)
S
YMBOL
P
ARAMETER
M
IN
.
T
YP
.
M
AX
.
U
NITS
t
21
CS Low to Rising Edge of SCLK Setup Time
50
ns
t
22
CS High to Rising Edge of SCLK Hold Time
20
ns
t
23
SDI to Rising Edge of SCLK Setup Time
50
ns
t
24
SDI to Rising Edge of SCLK Hold Time
50
ns
t
25
SCLK “Low” Time
240
ns
t
26
SCLK “High” Time
240
ns
t
27
SCLK Period
500
ns
t
28
CS Low to Rising Edge of SCLK Hold Time
50
ns
t
29
CS Inactive Time
250
ns
t
30
Falling Edge of SCLK to SDO Valid Time
200
ns
t
31
Falling Edge of SCLK to SDO Invalid Time
100
ns
t
32
Falling Edge of SCLK or Rising Edge of CS to High Z
100
ns
t
33
Rise/Fall time of SDO Output
40
ns
F
IGURE
9. T
IMING
D
IAGRAM
FOR
THE
M
ICROPROCESSOR
S
ERIAL
I
NTERFACE
SDI
R/W
A1
A0
CS
SCLK
CS
SCLK
SDI
SDO
D0
D1
D2
D7
t22
t21
t23
t24
t25
t26
t27
t28
t29
t30
t31
t32
t33
Hi-Z
Hi-Z
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