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ICS9DB403D Datasheet(PDF) 11 Page - Integrated Device Technology

Part No. ICS9DB403D
Description  Four Output Differential Buffer for PCIe Gen 1 and Gen 2
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Maker  IDT [Integrated Device Technology]
Homepage  http://www.idt.com
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ICS9DB403D Datasheet(HTML) 11 Page - Integrated Device Technology

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IDTTM/ICSTM
Four Output Differential Buffer for PCIe Gen 1 and Gen 2
ICS9DB403D
REV L 10/07/09
ICS9DB403D
Four Output Differential Buffer for PCIe for Gen 1 and Gen 2
11
General SMBus serial interface information for the ICS9DB403D
How to Write:
• Controller (host) sends a start bit.
• Controller (host) sends the write address DC
(h)
• ICS clock will
acknowledge
• Controller (host) sends the begining byte location = N
• ICS clock will
acknowledge
• Controller (host) sends the data byte count = X
• ICS clock will
acknowledge
• Controller (host) starts sending
Byte N through
Byte N + X -1
• ICS clock will
acknowledge each byte one at a time
• Controller (host) sends a Stop bit
How to Read:
• Controller (host) will send start bit.
• Controller (host) sends the write address DC
(h)
• ICS clock will
acknowledge
• Controller (host) sends the begining byte
location = N
• ICS clock will
acknowledge
• Controller (host) will send a separate start bit.
• Controller (host) sends the read address DD
(h)
• ICS clock will
acknowledge
• ICS clock will send the data byte count = X
• ICS clock sends
Byte N + X -1
• ICS clock sends
Byte 0 through byte X (if X
(h)
was written to byte 8).
• Controller (host) will need to acknowledge each byte
• Controllor (host) will send a not acknowledge bit
• Controller (host) will send a stop bit
ICS (Slave/Receiver)
T
WR
ACK
ACK
ACK
ACK
ACK
PstoP bit
Index Block Write Operation
Slave Address DC(h)
Beginning Byte = N
WRite
starT bit
Controller (Host)
Byte N + X - 1
Data Byte Count = X
Beginning Byte N
T
starT bit
WR
WRite
RT
Repeat starT
RD
ReaD
Beginning Byte N
Byte N + X - 1
N
Not acknowledge
PstoP bit
Slave Address DD(h)
Index Block Read Operation
Slave Address DC(h)
Beginning Byte = N
ACK
ACK
Data Byte Count = X
ACK
ICS (Slave/Receiver)
Controller (Host)
ACK
ACK


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