STA014 datasheet(36/45 Pages) STMICROELECTRONICS

部件名	STA014

功能描述	MPEG 2.5 LAYER III AUDIO DECODER WITH ADPCM AND SRS WOWO POSTPROCESSING CAPABILITY

PDF	45 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

36 / 45 page

5.4. TIMING DIAGRAMS

5.4.1. Audio DAC Interface

a) OCLK in output. The audio PLL is used to clock the DAC

OCLK (OUTPUT)

SDO

SCKT

LRCLK

tsdo

tsckt

tlrclk

D98AU969

Pad-timing versus load

Load (pF)

Pad_timing

2.90ns

3.82ns

4.68ns

100

5.52ns

Cload_XXX is the load in pF on the XXX output.

pad_timing (Cload_XXX) is the propagation delay

added to the XXX pad due to the load.

tsdo = 3.5 + pad_timing (Cload_SDO) - pad_timing

(Cload_ OCLK)

tsckt = 4 + pad_timing (Cload_SCKT) - pad_timing

(Cload_ OCLK)

tlrckt = 3.5 + pad_timing (Cload_LRCCKT) -

pad_timing (Cload_ OCLK)

OCLK (INPUT)

SDO

SCKT

LRCLK

tsdo

tsckt

tlrclk

D98AU970

thi

tlo

toclk

b) OCLK in input.

Thi min = 3ns

Tlo min = 3ns

Toclk min = 25ns

tsdo = 5.5 + pad_timing (Cload_SDO) ns

tsckt = 6 + pad_timing (Cload_SCKT) ns

tlrckt = 5.5 + pad_timing (Cload_LRCKT) ns

STA014-STA014B-STA014T

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