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: 109/164页
文件大小: 2003K
代理商: L64781
Microprocessor Interface
3-9
The following steps take place in a multiwrite cycle, Figure 3.8:
Step 1.
The master cycle starts the cycle with the start condition.
Step 2.
The master transmits the 7-bit slave address.
Step 3.
The master transmits the eighth bit (R/W) cleared to 0, to
indicate a write cycle.
Step 4.
The addressed slave acknowledges the reception of the slave
address by deasserting SDA (LOW) in the ACK cycle.
Step 5.
The master sends the 8-bit address to indicate the address of
the rst register to be written.
Step 6.
The addressed slave acknowledges reception of the address by
deasserting SDA (LOW) in the ACK cycle.
Step 7.
The master sends the 8-bit data.
Step 8.
The addressed slave acknowledges the reception of the data
by deasserting SDA (LOW) in the ACK cycle.
Steps 7 and 8 repeat as long as the master wants to write consecutive
addresses.
Step 9.
The master terminates the cycle by issuing a stop condition.
Figure 3.8
Multiwrite to Slave (Master-Transmitter, Slave-Receiver)
8-Bit Address
7-Bit Slave Address
Last 8-Bit Data
ACKn
Slave
Stop
R/Wn
ACKn
Slave
ACKn
Slave
SCL
SDA
D0
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9
Condition
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2
Bit 1 Bit 0
Bit 7 Bit 6 Bit 5
Step 7
Step 8
ACKn
Slave
First 8-Bit Data
Start
Condition
l64781.book Page 9 Friday, January 19, 2001 1:28 PM
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