s3c4510b Samsung Semiconductor, Inc., s3c4510b Datasheet - Page 216

• Manufacturer Part Number: s3c4510b
• Description: 16/32-bit Risc Microcontroller
• Manufacturer: Samsung Semiconductor, Inc.

I
Data Transfer Format
Data transfers uses the format shown in Figure 6-3. After the start condition has been generated, a 7-bit slave
address is sent. The eighth bit is a data direction bit (R/W). A "0" direction bit indicates a transmission (Write)
and a "1" indicates a request for data (Read).
A data transfer is always terminated by a stop condition which is generated by the master. However, if a master
still wishes to communicate on the bus, it can generate another start condition and address another slave without
first generating a stop condition. This feature supports the use of various combinations of read/write formats for
data transfers.
6-6
2
C BUS CONTROLLER
Multiple Byte Slave Receiver Format:
S
Multiple Byte Slave Transmitter Format:
S
NOTE:
Slave address
Slave address
S (Start)
W (Write; bit value is 0)
R (Read; bit value is 1)
P (Stop),
A (Acknowledge; The ACK is first sent to the slave. Afterwards, the direction
depends on the data transfer direction. In other words, if the mater reads the data,
it sends the ACK.)
W A
R A
Figure 6-3. Data Transfer Format
Data 1 (8 bits)
Data 1 (8 bits)
A
A
Data 2
Data 2
A
A
Data M
Data M
A P
A P
S3C4510B