Rainbow Electronics W90P710CDG User Manual
Page 478
W90P710CD/W90P710CDG
- 478 -
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
7
6
5
4
3
2
1
0
Reserved
START
STOP
READ
WRITE
ACK
NOTE: Software can write this register only when I2C_EN = 1.
BITS
DESCRIPTIONS
[31:5]
Reserved
Reserved
[4]
START
Generate Start Condition
Generate (repeated) start condition on I
2
C bus.
[3]
STOP
Generate Stop Condition
Generate stop condition on I
2
C bus.
[2]
READ
Read Data From Slave
Retrieve data from slave.
[1]
WRITE
Write Data To Slave
Transmit data to slave.
[0]
ACK
Send Acknowledge To Slave
When I
2
C behaves as a receiver, sent ACK (ACK = ‘0’) or NACK (ACK
= ‘1’) to slave.
NOTE: The START, STOP, READ and WRITE bits are cleared automatically while transfer finished.
READ and WRITE cannot be set concurrently.
I2C Software Mode Register 0/1(I2C_SWR 0/1)
REGISTER ADDRESS R/W
DESCRIPTION
RESET
VALUE
I2C_SWR0
0xFFF8_600C
R/W I2C Software Mode Control Register 0
0x0000_003F
I2C_SWR1
0xFFF8_610C
R/W I2C Software Mode Control Register 1
0x0000_003F