Datasheet

230
4341H–MP3–10/07
AT8xC51SND2C/MP3B
24.4.2.3 Waveforms
Figure 24-24. MMC Input-Output Waveforms
24.4.3 Audio Interface
24.4.3.1 Definition of symbols
Table 24-22. Audio Interface Timing Symbol Definitions
24.4.3.2 Timings
Table 24-23. Audio Interface AC timings
V
DD
= 2.7 to 3.3 V, T
A
= -40 to +85°C, CL≤ 30pF
Note: 1. 32-bit format with Fs= 48 KHz.
T
IVCH
MCLK
MDAT Input
T
CHCH
T
CLCX
T
CHCX
T
CHCL
T
CLCH
MCMD Input
T
CHIX
T
OVCH
MDAT Output
MCMD Output
T
CHOX
Signals Conditions
C Clock H High
O Data Out L Low
S Data Select V Valid
X No Longer Valid
Symbol Parameter Min Max Unit
T
CHCH
Clock Period 325.5
(1)
ns
T
CHCX
Clock High Time 30 ns
T
CLCX
Clock Low Time 30 ns
T
CLCH
Clock Rise Time 10 ns
T
CHCL
Clock Fall Time 10 ns
T
CLSV
Clock Low to Select Valid 10 ns
T
CLOV
Clock Low to Data Valid 10 ns