Datasheet

Section 17 I
2
C Bus Interface 2 (IIC2)
Rev.5.00 Nov. 02, 2005 Page 307 of 500
REJ09B0027-0500
Bit Bit Name
Initial
Value R/W Description
3
2
1
0
CKS3
CKS2
CKS1
CKS0
0
0
0
0
R/W
R/W
R/W
R/W
Transfer Clock Select 3 to 0
These bits should be set according to the necessary
transfer rate (see table 17.2) in master mode. In slave
mode, these bits are used for reservation of the setup
time in transmit mode. The time is 10 t
cyc
when CKS3 = 0
and 20 t
cyc
when CKS3 = 1.
Table 17.2 Transfer Rate
Bit 3 Bit 2 Bit 1 Bit 0 Transfer Rate
CKS3 CKS2 CKS1 CKS0
Clock
φ = 5 MHz φ = 8 MHz φ = 10 MHz φ = 16 MHz φ = 20 MHz
0 φ/28 179 kHz 286 kHz 357 kHz 571 kHz 714 kHz 0
1 φ/40
125 kHz 200 kHz 250 kHz 400 kHz 500 kHz
0 φ/48 104 kHz 167 kHz 208 kHz 333 kHz 417 kHz
0
1
1 φ/64
78.1 kHz 125 kHz 156 kHz 250 kHz 313 kHz
0 φ/80 62.5 kHz 100 kHz 125 kHz 200 kHz 250 kHz 0
1 φ/100
50.0 kHz 80.0 kHz 100 kHz 160 kHz 200 kHz
0 φ/112 44.6 kHz 71.4 kHz 89.3 kHz 143 kHz 179 kHz
0
1
1
1 φ/128 39.1 kHz 62.5 kHz 78.1 kHz 125 kHz 156 kHz
0 φ/56 89.3 kHz 143 kHz 179 kHz 286 kHz 357 kHz 0
1 φ/80
62.5 kHz 100 kHz 125 kHz 200 kHz 250 kHz
0 φ/96 52.1 kHz 83.3 kHz 104 kHz 167 kHz 208 kHz
0
1
1 φ/128
39.1 kHz 62.5 kHz 78.1 kHz 125 kHz 156 kHz
0 φ/160 31.3 kHz 50.0 kHz 62.5 kHz 100 kHz 125 kHz 0
1 φ/200
25.0 kHz 40.0 kHz 50.0 kHz 80.0 kHz 100 kHz
0 φ/224 22.3 kHz 35.7 kHz 44.6 kHz 71.4 kHz 89.3 kHz
1
1
1
1 φ/256
19.5 kHz 31.3 kHz 39.1 kHz 62.5 kHz 78.1 kHz