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IIC-BUS INTERFACE
DATA TRANSFER FORMAT
Every byte placed on the SDA line should be eight bits in length. The bytes can be unlimitedly transmitted per
transfer. The first byte following a Start condition should have the address field. The address field can be
transmitted by the master when the IIC-bus is operating in Master mode. Each byte should be followed by an
acknowledgement (ACK) bit. The MSB bit of the serial data and addresses are always sent first.
Write Mode Format with 7-bit Addresses
S Slave Address 7bits R/W A
Read Mode Format with 7-bit Addresses
S Slave Address 7 bits R/W A
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
18-4
Specifications and information herein are subject to change without notice.
"0"
(Write)
"1"
(Read)
NOTES:
1.
S: Start, rS: Repeat Start, P: Stop, A: Acknowledge
2.
: From Master to Slave,
Figure 18-3. IIC-Bus Interface Data Format
DATA(1Byte)
A
Data Transferred
(Data + Acknowledge)
DATA
A
Data Transferred
(Data + Acknowledge)
: From Slave to Master
S3C2451X RISC MICROPROCESSOR
P
P
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