[AK8975/C]
5.3.4. 4-wire SPI
4-wire SPI is compliant with mode 3
Parameter
CSB setup time
Symbol
Tcs
Condition
Min.
50
Typ.
Max.
Unit
ns
Data setup time
Data hold time
SK high time
Ts
50
ns
Th
50
ns
Twh
Vid≥2.5V
2.5V>Vid≥1.65V
Vid≥2.5V
100
150
100
150
50
ns
ns
SK low time
Twl
ns
2.5V>Vid≥1.65V
ns
SK setup time
Tsd
Tdd
ns
SK to SO delay time
(Note 12)
50
50
ns
CSB to SO delay time
(Note 12)
Tcd
ns
SK rise time (Note 13)
SK fall time (Note 13)
CSB high time
Tr
Tf
100
100
ns
ns
ns
Tch
150
(Note 12) SO load capacitance: 20pF
(Note 13) Reference value for design.
[4-wire SPI]
Tch
Tcd
Tcs
Tsd
CSB
Ts Th
Tdd
Twh
Twl
SK
SI
Hi-Z
Hi-Z
SO
[Rise time and fall time]
Tr
Tf
0.9Vid
0.1Vid
SK
MS1187-E-02
- 9 -
2010/05
AKM [ ASAHI KASEI MICROSYSTEMS ]
