参数资料
型号: IDT82V3280PF
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 通信及网络
英文描述: WAN PLL
中文描述: SPECIALTY TELECOM CIRCUIT, PQFP100
封装: TQFP-100
文件页数: 56/167页
文件大小: 1039K
代理商: IDT82V3280PF
IDT82V3280
WAN PLL
Microprocessor Interface
56
June 19, 2006
5.5
SERIAL MODE
In a read operation, the active edge of SCLK is selected by CLKE.
When CLKE is asserted low, data on SDO will be clocked out on the ris-
ing edge of SCLK. When CLKE is asserted high, data on SDO will be
clocked out on the falling edge of SCLK.
In a write operation, data on SDI will be clocked in on the rising edge
of SCLK.
Figure 23. Serial Read Timing Diagram (CLKE Asserted Low)
Figure 24. Serial Read Timing Diagram (CLKE Asserted High)
Table 39: Read Timing Characteristics in Serial Mode
Symbol
Parameter
Min
Typ
Max
Unit
T
t
in
t
out
t
su1
t
su2
t
d1
t
d2
t
pw1
t
pw2
t
h1
t
h2
One cycle time of the master clock
Delay of input pad
12.86
5
ns
ns
Delay of output pad
5
ns
Valid SDI to valid SCLK setup time
Valid
CS
to valid SCLK setup time
4
ns
14
ns
Valid SCLK to valid data delay time
CS
rising edge to SDO high impedance delay time
10
ns
10
ns
SCLK pulse width low
3.5T + 5
ns
SCLK pulse width high
3.5T + 5
ns
Valid SDI after valid SCLK hold time
Valid
CS
after valid SCLK hold time (CLKE = 0/1)
Time between consecutive Read-Read or Read-Write accesses
(
CS
rising edge to
CS
falling edge)
6
ns
5
ns
t
TI
10
ns
CS
SCLK
SDI
SDO
High-Z
D0
D1
D2
D3
D4
D5
D6
D7
t
pw2
t
pw1
t
su2
t
su1
t
h1
t
h2
t
d1
t
d2
R/
W
A0
A1
A2
A3
A4
A5
A6
CS
SCLK
SDI
SDO
High-Z
R/
W
A0
A1
A2
A3
A4
A5
A6
D0
D1
D2
D3
D4
D5
D6
D7
t
d1
t
d2
t
h2
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