ics9ums9001 Integrated Device Technology, ics9ums9001 Datasheet - Page 10

• Manufacturer Part Number: ics9ums9001
• Description: Pc Main Clock - Ck540
• Manufacturer: Integrated Device Technology

IDT
How to Write:
• Controller (host) sends a start bit.
• Controller (host) sends the write address D2
• ICS clock will acknowledge
• Controller (host) sends the beginning 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
• ICS clock will acknowledge each byte one at a time
• Controller (host) sends a Stop bit
ICS9UMS9001
PC MAIN CLOCK - CK540
TM
Byte N + X -1
(see Note 2)
WR
/ICS
T
P
Beginning Byte N
Data Byte Count = X
Slave Address D2
Beginning Byte = N
Controller (Host)
Byte N + X - 1
Index Block Write Operation
TM
PC MAIN CLOCK - CK540
General I
starT bit
stoP bit
WRite
(H)
2
C serial interface information for the ICS9UMS9001
ICS (Slave/Receiver)
ACK
ACK
ACK
ACK
ACK
(H)
10
How to Read:
• Controller (host) will send start bit.
• Controller (host) sends the write address D2
• ICS clock will acknowledge
• Controller (host) sends the begining byte
• ICS clock will acknowledge
• Controller (host) will send a separate start bit.
• Controller (host) sends the read address D3
• 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
• Controller (host) will need to acknowledge each byte
• Controller (host) will send a not acknowledge bit
• Controller (host) will send a stop bit
location = N
was written to byte 8)
WR
RD
RT
T
N
P
Slave Address D2
Slave Address D3
Beginning Byte = N
Controller (Host)
Index Block Read Operation
Not acknowledge
ACK
ACK
Repeat starT
starT bit
stoP bit
WRite
ReaD
(H)
(H)
Advance Information
.
ICS (Slave/Receiver)
Data Byte Count = X
Beginning Byte N
Byte N + X - 1
ACK
ACK
ACK
1247A—08/28/08
(H)
(H)
(H)