Rainbow Electronics W90N745CDG User Manual
Page 350
W90N745CD/W90N745CDG
- 346 -
I
2
C Software Mode Register 0/1(I
2
C_SWR 0/1)
REGISTER ADDRESS R/W
DESCRIPTION
RESET
VALUE
I
2
C_SWR0
0xFFF8_600C
R/W I
2
C Software Mode Control Register 0
0x0000_003F
I
2
C_SWR1
0xFFF8_610C
R/W I
2
C Software Mode Control Register 1
0x0000_003F
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
Reserved
SDR
SCR
Reserved
SDW
SCW
Note:
This register is used as software mode of I
2
C. Software can read/write this register no matter I
2
C_EN is 0 or 1. But SCL
and SDA are controlled by software only when I
2
C_EN = 0.
BITS
DESCRIPTIONS
[31:6]
Reserved
Reserved
[5]
Reserved
Reserved
[4]
SDR
Serial Interface SDA Status (Read only)
0 = SDA is Low.
1 = SDA is High.
[3]
SCR
Serial Interface SCK Status (Read only)
0 = SCL is Low.
1 = SCL is High.
[2]
Reserved
Reserved
[1]
SDW
Serial Interface SDA Output Control
0 = SDA pin is driven Low.
1 = SDA pin is tri-state.
[0]
SCW
Serial Interface SCK Output Control
0 = SCL pin is driven Low.
1 = SCL pin is tri-state.