At8xc51snd1c – Rainbow Electronics AT89C51SND1C User Manual

Page 196

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196

AT8xC51SND1C

4109E–8051–06/03

Audio Interface

Definition of symbols

Table 170. Audio Interface Timing Symbol Definitions

Timings

Table 171. 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.

Waveforms

Figure 152. Audio Interface Waveforms

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No Longer Valid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

DCLK

T

CHCH

T

CLCX

T

CHCX

T

CLCH

T

CHCL

DSEL

DDAT

Right

Left

T

CLSV

T

CLOV

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