W90N745CD/W90N745CDG
I2C Software Mode Register 0/1(I2C_SWR 0/1)
REGISTER
I2C_SWR0
I2C_SWR1
ADDRESS
R/W
DESCRIPTION
RESET VALUE
0x0000_003F
0x0000_003F
0xFFF8_600C
0xFFF8_610C
R/W I2C Software Mode Control Register 0
R/W I2C Software Mode Control Register 1
31
23
15
7
30
22
14
6
29
28
20
12
4
27
19
11
26
18
10
25
17
9
24
16
8
Reserved
Reserved
21
13
Reserved
5
3
2
1
0
Reserved
Reserved
SDR
SCR
Reserved
SDW
SCW
Note: This register is used as software mode of I2C. Software can read/write this register no matter I2C_EN is 0 or 1. But SCL
and SDA are controlled by software only when I2C_EN = 0.
BITS
[31:6]
[5]
DESCRIPTIONS
Reserved
Reserved
Reserved
Reserved
Serial Interface SDA Status (Read only)
0 = SDA is Low.
[4]
SDR
1 = SDA is High.
Serial Interface SCK Status (Read only)
0 = SCL is Low.
[3]
[2]
[1]
SCR
Reserved
SDW
1 = SCL is High.
Reserved
Serial Interface SDA Output Control
0 = SDA pin is driven Low.
1 = SDA pin is tri-state.
Serial Interface SCK Output Control
0 = SCL pin is driven Low.
[0]
SCW
1 = SCL pin is tri-state.
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