Audio DAC Interface
Definition of symbols
Table 272. Audio DAC Interface Timing Symbol Definitions
Signals
Conditions
High
C
O
S
Clock
H
L
Data Out
Data Select
Low
V
X
Valid
No Longer Valid
Timings
Table 273. Audio Interface AC timings
VDD = 1.65 to 3.6 V; TA = -40 to +85°C, CL ≤ 30pF
Symbol
Parameter
Min
Max
Unit
ns
ns
ns
ns
ns
ns
ns
TCHCH
TCHCX
TCLCX
TCLCH
TCHCL
TCLSV
TCLOV
Note:
Clock Period
325.5(1)
Clock High Time
Clock Low Time
Clock Rise Time
Clock Fall Time
30
30
10
10
10
10
Clock Low to Select Valid
Clock Low to Data Valid
1. 32-bit format with Fs= 48 KHz.
Waveforms
Figure 149. Audio Interface Waveforms
TCHCH
TCHCX
TCLCX
DCLK
TCHCL
TCLCH
TCLSV
DSEL
DDAT
Right
Left
TCLOV
External Clock Interface
Definition of symbols
Table 274. External Clock Timing Symbol Definitions
Signals
Conditions
High
C
Clock
H
L
Low
X
No Longer Valid
16
AT85C51SND3Bx
7632A–MP3–03/06
ATMEL [ ATMEL ]
