參數(shù)資料
型號(hào): XRT8000ID
廠商: EXAR CORP
元件分類: XO, clock
英文描述: Clock Synchronizer/Adapter for Communications
中文描述: 2.048 MHz, OTHER CLOCK GENERATOR, PDSO18
封裝: 0.300 INCH, SOIC-18
文件頁數(shù): 14/24頁
文件大小: 513K
代理商: XRT8000ID
XRT8000
14
Rev. 1.11
CR5 Register (Power On State = “00000”)
D0 : ( PL1/8) :
Select the divider by 8 for PLL1,
PL1/8 = “1” CLK1 output frequency is divided by 8.
PL1/8 = “0” CLK1 output frequency is as per table 4.
D1 : ( PL2/8) :
Select the divider by 8 for PLL2,
PL2/8 = “1” CLK2 output frequency is divided by 8.
PL2/8 = “0” CLK2 output frequency is as per table 5.
D2 : ( CLK2EN) , PLL2:
Output enable bit,
CLK2EN = “1” CLK2 output is enabled.
CLK2EN = “0” CLK2 output is Tri State D.
D3 : ( CLK1EN) , PLL1:
Output enable bit,
CLK1EN = “1” CLK1 output is enabled.
CLK1EN = “0” CLK1 output is Tri State D.
D4 : ( SYNCEN) , 8kHz SYNC enable bit:
SYNCEN = “1” SYNC output is enabled.
SYNCEN = “0” SYNC output is Tri State D.
CR6 to CR7 Register
Register reserved for future use.
Address
Data In
Data Out
R/W
A0
A1
A2
A3
A4
A5
A6
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
HiZ
HiZ
SDO
SDI
SCLK
CSB
Figure 4. Serial Processor Interface Data Structure
Note
:
A3, A4 and A5 always Low.
A6 Do not care.
R/W bit = 1 for a read operation
2 for a write operation
D5, D6 and D7 always Low
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
SERIAL INTERFACE
The serial interface is a simple four wire interface that is
compatible with many of the microcontrollers available in
the market.
This interface consists of the following
signals:
CSB
SCLK
SDI
SDO
Chip Select (Active Low)
Serial Clock Input
Serial Data Input
Serial Data Output
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