参数资料
型号: L64781
厂商: LSI CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP100
封装: PLASTIC, QFP-100
文件页数: 103/164页
文件大小: 2003K
代理商: L64781
Microprocessor Interface
3-3
Step 12. The slave starts transmitting the data.
Step 13. The master does not generate an acknowledge during ACK
cycle.
Step 14. The master terminates the cycle by issuing a stop condition.
Figure 3.3
Single Read from Slave without Repeat Start Condition
Single-Read Cycle with Repeat-Start Condition – The steps in a
single-read cycle with a repeat-start condition, Figure 3.4, are:
Step 1.
The master starts the cycle by issuing a start condition.
Step 2.
The master transmits the 7-bit slave address.
Step 3.
The master sets the R/W bit to 0, to indicate a write cycle.
Step 4.
The addressed slave acknowledges the reception of the slave
address by driving SDA LOW in the ACK cycle.
Step 5.
The master sends the 8-bit address.
Step 6.
The addressed slave acknowledges reception of the address by
driving SDA LOW in the ACK cycle.
Step 7.
The master issues a repeat start condition.
Step 8.
The master transmits the 7-bit slave address.
Step 9.
The master sets the R/W bit to 1, to indicate a read cycle.
Step 10. The addressed slave acknowledges the reception of the slave
address by driving SDA LOW in the ACK cycle.
Step 11. The slave starts transmitting the data.
8-Bit Address
7-Bit Slave Address
8-Bit Data
ACKn
Slave
Master
ACKn
Start
Stop
R/Wn
ACKn
Slave
ACKn
Slave
7-Bit Slave Address
R/Wn
SCL
SDA
Step 1
Step 2
Step 3
Step 4 Step 5
Step 6 Step 7
Step 8
Step 9 Step 10 Step 11 Step 12 Step 13
Condition
Stop
Condition
Start
Condition
Step 14
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2
Bit 1 Bit 0
l64781.book Page 3 Friday, January 19, 2001 1:28 PM
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