ALC887-VD datasheet(82/91 Pages) REALTEK

Part #	ALC887-VD

Description	7.1 CHANNEL HIGH DEFINITION AUDIO CODEC WITH TWO INDEPENDENT S/PDIF OUTPUT

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Manufacturer	REALTEK [Realtek Semiconductor Corp.]

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ALC887-VD

Datasheet

7.1 Channel High Definition Audio Codec with Two

Independent S/PDIF Output

74

Rev. 0.22

9.2.3.

S/PDIF Output and Input Timing

Table 83.

S/PDIF Output and Input Timing

Parameter

Symbol

Minimum

Typical

Maximum

Units

S/PDIF-OUT Frequency

-

3.072

-

MHz

S/PDIF-OUT Period *1

Tcycle

-

325.6

-

ns

S/PDIF-OUT Jitter

Tjitter

-

4

ns

S/PDIF-OUT High Level Width

THigh

156.2 (48%)

162.8 (50%)

169.2 (52%)

ns (%)

S/PDIF-OUT Low Level Width

TLow

156.2 (48%)

162.8 (50%)

169.2 (52%)

ns (%)

S/PDIF-OUT Rising Time

Trise

-

2.0

-

ns

S/PDIF-OUT Falling Time

Tfall

-

2.0

-

ns

S/PDIF-IN Period *2

Tcycle

-

325.6

-

ns

S/PDIF-IN Jitter

Tjitter

-

10

ns

S/PDIF-IN High Level Width

THigh

146.4 (45%)

162.8 (50%)

179 (55%)

ns (%)

S/PDIF-IN Low Level Width

TLow

146.4 (45%)

162.8 (50%)

179 (55%)

ns (%)

*1: Bit parameters for 48kHz sample rate of S/PDIF-OUT

*2: Bit parameters for 48kHz sample rate of S/PDIF-IN

low

t

V

IL

V

IH

OH

OL

high

rise

fall

Tcycle

T

V

Figure 18.

Output and Input Timing

9.2.4.

Test Mode

The ALC887-VD does not support test mode or Automatic Test Equipment (ATE) mode.

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