ak7746 ETC-unknow, ak7746 Datasheet - Page 15

• Manufacturer Part Number: ak7746
• Description: Audio With 5-channel 24-bit Input
• Manufacturer: ETC-unknow

5-4) Microcomputer Interface
[MS0369-E00]
[ASAHI KASEI]
Note 1) Except for external jump code set at reset state.
Note 2) If there is excess serial data D(x) and when divided by G(x) it is equal to R(x), then SO = “H”.
Note 3) Must read for more than 300ns before RQ falls .
Microcomputer Interface Signal
SCLK fall time
SCLKrise time
SCLK frequency
SCLK low level width
SCLK high level width
Microcomputer to AK7746
Time from RESET "↓" to RQ "↓"
Time from RQ "↑" to RESET "↑"
Time from RQ "↓" to SCLK"↓"
Time from SCLK"↑" to RQ "↑”
SI latch setup time
SI latch hold time
AK7746 to microcomputer
Time from SCLK"↑" to DRDY"↓"
Time from SI"↑"to DRDY"↓"
SI high level width
Delay time from SCLK"↓" to SO output
Hold time from SCLK"↑" to SO output
AK7746 to microcomputer (RAM DATA read-out)
SI latch setup time (SI="H")
SI latch setup time (SI="L")
SI latch hold time
Time from SCLK"↓" to SO output
AK7746 to microcomputer (CRC result out) (Note 2)
Delay time from RQ "↑" to SO output
Delay time from RQ "↓" to SO output
Time from S_RESET "↓" to CS "↓"
Time from CS "↑" to S_RESET "↑"
Time from CS "↓" to RQ "↓"
Time from RQ "↑" to CS "↑"
RQ Fall time
RQ Rise time
RQ high level width
CS
CS Fall time
CS Rise time
CS high level width
CS "↓" to SO,RDY,DRDY Hi-Z release
CS "↑" to SO,RDY,DRDY Hi-Z
(AVDD=DVDD=3.0V~3.6V, Ta=-40~85°C, CL=20pF)
Parameter
Note 1)
(Note 3)
- 15 -
tWCSRQ
tWRQCS
1/fSCLK
tSCLKH
tSCLKL
tWRQH
Symbol
tRSISH
tWRCS
tWCSR
tWCSH
tRSISL
tRSOC
tCSHR
tFSOC
tCSHS
tWRR
tREW
tWRE
tSIDR
tRSIH
tWRF
tWSC
tSCW
tSDR
tSOH
tSOD
tSOS
tCSR
tCSF
tSIH
tSIH
tSIS
tSR
tSF
1000
min
350
350
500
500
500
500
800
300
300
600
150
300
300
300
300
600
600
600
600
typ
max
600
600
300
300
400
600
600
1.4
30
30
30
30
30
30
[AK7746]
2004/12
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns