AK7714 Datasheet, PDF (16/48 Pages) Asahi Kasei Microsystems – 20-Bit Audio Codec with DSP and Delay RAM

[ASAHI KASEI]
4) Microcomputer interface
(AVDD = AVB, DVB, DVDD = 5.0 V ±5%, Ta = 25°C, CL = 20 pF)
Parameter
Symbol
Min
Typ
Microcomputer interface signal
CS Fall time
tCSF
CS Rise time
tCSR
Rest time until RDY and SO Hi-Z states
from CS"↓"
tCSHR
Set time until RDY and SO Hi-Z states
from CS"↑"
tCSHS
WRQ fall time
WRQ rise time
tWRF
tWRR
SCLK fall time
tSF
SCLK rise time
tSR
SCLK low level width
SCLK high level width
tSCLKL
150
tSCLKH
150
Microcomputer to AK7714
Time from RESET"↓" to WRQ"↓"
tREW
200
Time from WRQ"↑" to RESET"↑"
tWRE
200
WRQ high level width
tWRQH
200
Time from WRQ "↓" to SCLK"↓"
tWSC
200
Time from SCLK"↑" to WRQ"↑"
tSCW
6×tMCLK
SI latch setup time
tSIS
100
SI latch hold time
tSIH
100
AK7714 to microcomputer
CS high level width
tCSH
200
Time from SCLK"↑" to CS"V"
tSCS
6×tMCLK
Time from CS"↓" to SCLK"↓"
tCSC
200
Time from CS"↑" to DRDY"↑"
tCSDR
Delay time from SCLK "↓" to SO output
tSOS
AK7714 to microcomputer
(RAM DATA read-out)
SI latch setup time (SI="H")
tRSISH
100
SI latch setup time (SI="L")
tRSISL
100
SI latch hold time
tRSIH
100
Time from SCLK "↓" to SO (PRAM)
tSOPD
Time from SCLK "↓" to SO (CRAM, OFRAM) tSOCOD
[AK7714]
Max
Unit
10
ns
10
ns
100
ns
200
ns
10
ns
10
ns
10
ns
10
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
100
ns
100
ns
ns
ns
ns
100
ns
100
ns
M0018-E-00
- 16 -
‘98/07