9UMS9633 IDT [Integrated Device Technology], 9UMS9633 Datasheet - Page 12

• Manufacturer Part Number: 9UMS9633
• Description: ULTRA MOBILE PC CLOCK FOR INDUSTRIAL TEMPERATURE RANGE
• Manufacturer: IDT [Integrated Device Technology]

How to Write:
• Controller (host) sends a start bit.
• Controller (host) sends the write address D2
• 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
• ICS clock will acknowledge each byte one at a time
• Controller (host) sends a Stop bit
IDT
ICS9UMS9633BI
ULTRA MOBILE PC CLOCK FOR INDUSTRIAL TEMPERATURE RANGE
Byte N + X -1
TM
WR
P
T
/ICS
Beginning Byte N
Data Byte Count = X
Index Block Write Operation
Beginning Byte = N
Slave Address D2
Byte N + X - 1
Controller (Host)
TM
General SMBus serial interface information for the ICS9UMS9633BI
Ultra Mobile PC Clock for Industrial Temperature Range
starT bit
stoP bit
WRite
(h)
ICS (Slave/Receiver)
ACK
ACK
ACK
ACK
ACK
(h)
12
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
• Controllor (host) will send a not acknowledge bit
• Controller (host) will send a stop bit
location = N
was written to byte 8)
WR
RD
RT
N
P
T
Index Block Read Operation
Beginning Byte = N
Slave Address D3
Slave Address D2
Controller (Host)
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
1451—01/20/09
(h)
(h)
(h)