TMPM330 - Keil

SBIxCR1
Under development
Serial bus control register 1
7 6 5 4 3 2 1 0
Bit symbol BC2 BC1 BC0 ACK SCK2 SCK1
TMPM330 (rev 0.4) 10-6
TMPM330
SCK0/
SWRMON
Read/Write R/W R/W R R/W R/W
After reset 0 0 0 0 1 0 0 1
Function Select the number of bits per Acknowled
gment
transfer (Note 1)
clock
0: Not
generate
1: Generate
This can
be read as
“1.”
Select internal SCL output clock
frequency (Note 2) and reset monitor.
15 14 13 12 11 10 9 8
Bit symbol
Read/Write R
After reset 0
Function This can be read as “0.”
23 22 21 20 19 18 17 16
Bit symbol
Read/Write R
After reset 0
Function This can be read as “0.”
31 30 29 28 27 26 25 24
Bit symbol
Read/Write R
After reset 0
Function This can be read as “0.”
: Select internal SCL output clock frequency
< SWRMON:0>: Software reset status monitor
: Select the number of bits per transfer
Fig. 10-4 I 2 C Bus Mode register
On writing : Select internal SCL output clock
frequency
000 n=5 196 kHz
001 n=6 149 kHz System clock: fsys
010 n=7 101 kHz
(=40 MHz)
011 n=8 61 kHz Clock gear : fc/1
100
101
110
n=9
n=10
n=11
34
18
9
kHz
kHz
kHz
fsys/2
Frequency = [ Hz ]
2
111 reserved
n +70
On reading : Software reset status monitor
0 Software reset operation is in progress.
1 Software reset operation is not in progress.
Select the number of bits per transfer
When = 0 When = 1
Number of Data Number of Data
clock cycles length clock cycles length
000 8
8 9
8
001 1
1 2
1
010 2
2 3
2
011 3
3 4
3
100 4
4 5
4
101 5
5 6
5
110 6
6 7
6
111 7
7 8
7
Serial Bus Interface (SBI)