AK7719 Datasheet, PDF (11/16 Pages) Asahi Kasei Microsystems – Low Power DSP for Voice and Audio Processing

■ μP Interface (SPI Mode)
(Ta= -20ºC ~ 85ºC, VDD=1.2V; TVDD=1.6~3.6V, VSS =0V; CL=20pF)
Parameter
Symbol
min
μP Interface Timing (SPI mode)
SCLK Fall Time
tSF
SCLK Rise Time
tSR
SCLK Frequency
fSCLK
SCLK Low Level Width
tSCLKL
120
SCLK High Level Width
tSCLKH
120
CSN High Level Width
tWRQH
500
From CSN “↑” to PDN “↑”
tRST1
600
From PDN “↑” to CSN “↓”
tIRRQ
100
From SCLK “↓” to CSN “↑”
From SCLK “↑” to CSN “↑”
tWSC
500
tSCW
800
SI Latch Setup Time
SI Latch Hold Time
tSIS
100
tSIH
100
AK7719 → μP
Delay Time from SCLK “↓”to SO Output
tSOS
Hold Time from SCLK “↑” to SO Output (Note 14)
tSOH
100
Note 14. Except when input the eighth bit of the command code.
tSF
tSR
[AK7719]
typ
max
Unit
30
ns
30
ns
4.0
MHz
ns
ns
ns
ns
μs
ns
ns
ns
ns
100
ns
ns
VIH
SCLK
VIL
tSCLKL
tSCLKH
1/fSCLK
1/fSCLK
PDN
CSN
VIH
VIL
VIH
VIL
tRST1
tIRRQ
Figure 6. μP Interface 1 (SPI)
MS1351-E-00-PB
11
2012/01