ISD94100 Series Technical Reference Manual
Sep 9, 2019
Page
663
of 928
Rev1.09
IS
D
9
410
0
S
ER
IE
S
T
E
C
HN
ICA
L
RE
F
E
RE
NCE
M
AN
U
AL
I2C Status Register 1 (I2C_STATUS1)
Register
Offset
R/W Description
Reset Value
I2C_STATUS1
0x48
R/W I
2
C Status Register 1
0x0000_0000
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
ONBUSY
7
6
5
4
3
2
1
0
Reserved
ADMAT3
ADMAT2
ADMAT1
ADMAT0
Bits
Description
[31:9]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
[8]
ONBUSY
On Bus Busy
Indicates that a communication is in progress on the bus. It is set by hardware when a
START condition is detected. It is cleared by hardware when a STOP condition is detected
or arbitration lost condition occured.
0 = The bus is IDLE (both SCLK and SDA High).
1 = The bus is busy.
Note:
This bit is read only.
[7:2]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
[3]
ADMAT3
I
2
C Address 3 Match Status Register
When address 3 is matched, hardware will inform which address used. This bit will set to 1,
and software can write 1 to clear this bit.
[2]
ADMAT2
I
2
C Address 2 Match Status Register
When address 2 is matched, hardware will inform which address used. This bit will set to 1,
and software can write 1 to clear this bit.
[1]
ADMAT1
I
2
C Address 1 Match Status Register
When address 1 is matched, hardware will inform which address used. This bit will set to 1,
and software can write 1 to clear this bit.
[0]
ADMAT0
I
2
C Address 0 Match Status Register
When address 0 is matched, hardware will inform which address used. This bit will set to 1,
and software can write 1 to clear this bit.
Содержание ISD94100 Series
Страница 528: ...ISD94100 Series Technical Reference Manual Sep 9 2019 Page 528 of 928 Rev1 09 ISD94100 SERIES TECHNICAL REFERENCE MANUAL...
Страница 626: ...ISD94100 Series Technical Reference Manual Sep 9 2019 Page 626 of 928 Rev1 09 ISD94100 SERIES TECHNICAL REFERENCE MANUAL...
Страница 702: ...ISD94100 Series Technical Reference Manual Sep 9 2019 Page 702 of 928 Rev1 09 ISD94100 SERIES TECHNICAL REFERENCE MANUAL...
Страница 875: ...ISD94100 Series Technical Reference Manual Sep 9 2019 Page 875 of 928 Rev1 09 ISD94100 SERIES TECHNICAL REFERENCE MANUAL...