參數(shù)資料
型號(hào)： 9250YF-27LF-T
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 時(shí)鐘產(chǎn)生/分配
英文描述： PROC SPECIFIC CLOCK GENERATOR, PDSO56
封裝： 0.300 INCH, 0.25 INCH PITCH, ROHS COMPLIANT, MO-118, TSSOP-56
文件頁(yè)數(shù)： 5/15頁(yè)
文件大?。?/td> 195K
代理商： 9250YF-27LF-T
IDTTM
Frequency Generator and Integrated Buffers for Celeron & PII/IIITM
0395F—01/25/10
ICS9250-27
Frequency Generator and Integrated Buffers for Celeron & PII/IIITM
13
1.
The ICS clock generator is a slave/receiver, I
2C component. It can read back the data stored in the latches for
verification. Read-Back will support Intel PIIX4 "Block-Read" protocol.
2.
The data transfer rate supported by this clock generator is 100K bits/sec or less (standard mode)
3.
The input is operating at 3.3V logic levels.
4.
The data byte format is 8 bit bytes.
5.
To simplify the clock generator I
2C interface, the protocol is set to use only "Block-Writes" from the controller.
The bytes must be accessed in sequential order from lowest to highest byte with the ability to stop after any
complete byte has been transferred. The Command code and Byte count shown above must be sent, but the
data is ignored for those two bytes. The data is loaded until a Stop sequence is issued.
6.
At power-on, all registers are set to a default condition, as shown.
General I
2C serial interface information
The information in this section assumes familiarity with I
2C programming.
How to Write:
Controller (host) sends a start bit.
Controller (host) sends the write address D2
(H)
ICS clock will acknowledge
Controller (host) sends a dummy command code
ICS clock will acknowledge
Controller (host) sends a dummy byte count
ICS clock will acknowledge
Controller (host) starts sending first byte (Byte 0)
through byte 5
ICS clock will acknowledge each byte one at a time.
How to Read:
Controller (host) will send start bit.
Controller (host) sends the read address D3
(H)
ICS clock will acknowledge
ICS clock will send the byte count
Controller (host) acknowledges
ICS clock sends first byte (Byte 0) through byte 5
Controller (host) will need to acknowledge each byte
Controller (host) will send a stop bit
Notes:
Controller (Host)
IC S (Slave/R eceiver)
Start Bit
Address
D2
(H )
ACK
Dummy Command Code
ACK
Dummy Byte Count
ACK
Byte 0
ACK
Byte 1
ACK
Byte 2
ACK
Byte 3
ACK
Byte 4
ACK
Byte 5
ACK
Stop Bit
How to Write:
Controller (Host)
IC S (Slave/R eceiver)
Start Bit
Address
D3
(H )
ACK
Byte Count
ACK
Byte 0
ACK
Byte 1
ACK
Byte 2
ACK
Byte 3
ACK
Byte 4
ACK
Byte 5
ACK
Stop Bit
How to Read:
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