Advertisement
2
ICMR0—I
C Bus Mode Register
2
ICMR1—I
C Bus Mode Register
Bit
:
7
MLS
Initial value
:
0
R/W
:
R/W
MSB-first/LSB-first select
0 MSB first
1 LSB first
6
5
WAIT
CKS2
0
0
R/W
R/W
Transmit clock select
SCRX Bit 5
Bit 4
bit
5, 6
IICX
CKS2
CKS1
0
0
0
1
1
0
1
1
0
0
1
1
0
1
Wait insert bit
0 Send data followed by acknowledge bit.
1 Insert wait between data and acknowledge bit.
H'FF7F
H'FF87
4
3
CKS1
CKS0
BC2
0
0
R/W
R/W
R/W
Bit counter
Bit 2
Bit 1
Bit 0
BC2
BC1
BC0
0
0
0
1
1
0
1
1
0
0
1
1
0
1
Bit 3
Clock
CKS0
ø= 5 MHz ø= 8 MHz ø= 10 MHz ø= 16 MHz ø= 20 MHz ø= 25 MHz
0
ø/28
179kHz
1
ø/40
125kHz
0
ø/48
104kHz
1
ø/64
78.1kHz
0
ø/80
62.5kHz
1
ø/100
50.0kHz
0
ø/112
44.6kHz
1
ø/128
39.1kHz
0
ø/56
89.3kHz
1
ø/80
62.5kHz
0
ø/96
52.1kHz
1
ø/128
39.1kHz
0
ø/160
31.3kHz
1
ø/200
25.0kHz
0
ø/224
22.3kHz
1
ø/256
19.5kHz
2
1
0
BC1
BC0
0
0
0
R/W
R/W
Bit/frame
Clock sync
serial format
8
1
2
3
4
5
6
7
Transfer rate
286 kHz
357 kHz
571 kHz
200 kHz
250 kHz
400 kHz
167 kHz
208 kHz
333 kHz
125 kHz
156 kHz
250 kHz
100 kHz
125 kHz
200 kHz
80.0 kHz
100 kHz
160 kHz
71.4 kHz
89.3 kHz
143 kHz
62.5 kHz
78.1 kHz
125 kHz
143 kHz
179 kHz
286 kHz
100 kHz
125 kHz
200 kHz
83.3 kHz
104 kHz
167 kHz
62.5 kHz
78.1 kHz
125 kHz
50.0 kHz
62.5 kHz
100 kHz
40.0 kHz
50.0 kHz
80.0 kHz
35.7 kHz
44.6 kHz
71.4 kHz
31.3 kHz
39.1 kHz
62.5 kHz
IIC0
IIC1
PC bus format
9
2
3
4
5
6
7
8
714 kHz
893 kHz
500 kHz
625 kHz
417 kHz
521 kHz
313 kHz
391 kHz
250 kHz
313 kHz
200 kHz
250 kHz
179 kHz
223 kHz
156 kHz
195 kHz
357 kHz
446 kHz
250 kHz
313 kHz
208 kHz
260 kHz
156 kHz
195 kHz
125 kHz
156 kHz
100 kHz
125 kHz
89.3 kHz
112 kHz
78.1 kHz
97.7 kHz
1093
Advertisement
