YSS943 Ver la hoja de datos (PDF) - Yamaha Corporation

Número de pieza

componentes Descripción

Fabricante

YSS943

Advanced Digital Audio Multi channel decode processor

Yamaha Corporation 

YSS944/943/940

Type

General-purpose

I/O ports

General-purpose

I/O ports

Test

Pin Pin Name I/O

Function

No.

Note 1)

135 nMUTE

O This is the output pin during auto mute periods.

133 ZEROFLG O This is the consecutive zero data input detection pin.

13 STATUS7 O These are status output pins 7 to 0.

12 STATUS6

11 STATUS5

They are used to confirm firmware operations.

Normally, they should be left unconnected.

10 STATUS4

116 STATUS3

115 STATUS2

114 STATUS1

113 STATUS0

57 IOPORT7 I(+)/O These are general I/O port pins 7 to 0.

56 IOPORT6

Their I/O status can be set via register settings.

55 IOPORT5 I(+)/O These are general I/O port pins 7 to 0.

54 IOPORT4

Their I/O status can be set via register settings.

53 IOPORT3

52 IOPORT2

47 IOPORT1

46 IOPORT0

16

TEST

Is Test pins

17

Connect these pins to a ground.

24

25

132

Note 1) I/O symbols

• I: Input

• Is: Schmitt trigger input

• O: Output

• Ot: Tri-state output

• I/O: I/O

• I(+)/O: Pull-up during input, no pull-up during output

Note 2) Example of circuit connected to crystal oscillator

XI

XO

12.288 MHz

* The above resistor and capacitor vary depending on the crystal oscillator. Be sure to comply with the specifications of the

crystal oscillator used.

8

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