s3c2410a Samsung Semiconductor, Inc., s3c2410a Datasheet - Page 456

• Manufacturer Part Number: s3c2410a
• Description: 16/32-bit Risc Arm Microprocessor
• Manufacturer: Samsung Semiconductor, Inc.

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.
20-4
NOTES:
1.
2.
Read Mode Format with 10-bit Addresses
Write Mode Format with 7-bit Addresses
Write Mode Format with 10-bit Addresses
Read Mode Format with 7-bit Addresses
S
S Slave Address 7bits R/W A
S
S Slave Address 7 bits R/W A
S : Start, rS: Repeat Start,
Slave Address
Slave Address
: From Master to Slave,
11110XX
11110XX
1st 7 bits
1st 7 bits
(Read)
(Write)
(Write)
(Read)
R/W A
R/W A
"1"
"0"
"0"
"1"
P : Stop, A: Acknowledge
(Data + Acknowledge)
(Data + Acknowledge)
Figure 20-3. IIC-Bus Interface Data Format
: From Slave to Master
Slave Address
Slave Address
DATA(1Byte)
Data Transferred
Data Transferred
2nd Byte
2nd Byte
DATA
A rS
A
A
A
P
P
(Data + Acknowledge)
Data Transferred
Slave Address
DATA
1st 7 Bits
A
(Read)
P
R/W
"1"
A
(Data + Acknowledge)
Data Transferred
DATA
S3C2410A
A
P