AK8813 Datasheet, PDF (14/51 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHIKASEI
(5). I²C Bus (SCL 400kHz cycle mode)
(5-1) I/O Timing 1
tBUF ^tHD:STA
tR
SDA
tF
tR
SCL
tLOW
[AK8813/14]
tF
tSU:STO
tSU:STA
Parameter
Symbol
Min
Max
Units
Bus Free Time
tBUF
1.3
usec
Hold Time (Start Condition)
tHD:STA
0.6
usec
Clock Pulse Low Time
tLOW
1.3
usec
Bus Signal Rise Time
tR
300
nsec
Bus Signal Fall Time
tF
300
nsec
Setup Time(Start Condition)
tSU:STA
0.6
usec
Setup Time(Stop Condition)
tSU:STO
0.6
usec
All the figures shown above list are not restricted by AK8813/14 but are restricted by I²C Bus standard.
Please see the I²C Bus standard for further details.
(5-2) I/O Timing 2
tHD:DAT
SDA
SCL
tHIGH
tSU:DAT
Parameter
Symbol
Min.
Max.
Unit.
Data Setup Time
tSU:DAT
100 (1)
nsec
Data Hold Time
tHD:DAT
0.0
0.9 (2)
usec
Clock Pulse High Time
tHIGH
0.6
usec
(Note1) In case of normal I²C bus mode tSU:DAT ≥250nsec
(Note2) Using under minimum tLOW, this value must be satisfied.
(Note3) I2C I/F reset is done by reset sequence of AK8813/14, System clock (27MHz) is necessary to do
reset sequence. However, SDA pin is always Hi-Z state when PD pin is set to High.
Rev.00
- 15 -
2004/Oct