參數(shù)資料
型號(hào): XRT7302
廠商: Exar Corporation
英文描述: 2 Channel E3/DS3/STS-1 Line Interface Unit(2通道 E3/DS3/STS-1線接口單元)
中文描述: 2頻道E3/DS3/STS-1線路接口單元(2通道E3/DS3/STS-1線接口單元)
文件頁(yè)數(shù): 24/62頁(yè)
文件大?。?/td> 715K
代理商: XRT7302
XRT7302
2 CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT
á
REV. 1.1.6
20
N
OTES
:
1. A4 and A5 are always "0".
2. R/W = "1" for "Read" Operations
3. R/W = "0" for "Write" Operations
4. A shaded pulse, denotes a “don’t care” value.
E
LECTRICAL
C
HARACTERISTICS
(C
ONTINUED
), (T
A
= 25
0
C, V
DD
= 5 + 5%,
UNLESS
OTHERWISE
SPECIFIED
)
M
ICROPROCESSOR
S
ERIAL
I
NTERFACE
T
IMING
(S
EE
IGURE
5)
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
4. M
ICROPROCESSOR
S
ERIAL
I
NTERFACE
D
ATA
S
TRUCTURE
D0
D1
D2
0
0
0
D4
D3
High Z
SDO
A0
D0
R/W
D1
A6
0
0
A3
A2
A1
D7
D6
D5
D4
D3
D2
SDI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SClk
CS
High Z
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