YMF754-R datasheet(27/60 Pages) YAMAHA

27 / 60 page

YMF754

June 28, 1999

-27-

50h: Capability ID

Read Only

Default: 01h

Access Bus Width: 8, 16, 32-bit

Capability ID

b[7:0] ..........Capability ID: Capability Identifier

This register indicates that the new capability register is for Power Management control.

This register is

hardwired to 01h.

51h: Next Item Pointer

Read Only

Default: 00h

Access Bus Width: 8, 16, 32-bit

Next Item Pointer

b[7:0] ..........Next Item Pointer

DS-1E does not provide other new capability besides Power Management.

This register is hardwired to

00h.

52-53h: Power Management Capabilities

Read Only

Default: 0401h

Access Bus Width: 8, 16, 32-bit

b15

b14

b13

b12

b11

b10

D2S

Version

b[2:0] ..........Version

These bits contain the revision number of the Power Management Interface Specification.

They are

hardwired to 001b.

b10..............D2S: D2 Support

This bit indicates that DS-1E support “D2” of the power state.

It is hardwired to “1”.

YMF754-R 数据表(PDF) 27 Page - YAMAHA CORPORATION

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YMF754-R 数据表(PDF) 27 Page - YAMAHA CORPORATION

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