YMF754-R datasheet(14/60 Pages) YAMAHA

14 / 60 page

YMF754

June 28, 1999

-14-

0Dh: Latency Timer

Read / Write

Default: 00h

Access Bus Width: 8, 16, 32-bit

Latency Timer

b[7:0] ..........Latency Timer

When DS-1E becomes a Bus Master device, this register indicates the initial value of the Master Latency

Timer.

0Eh: Header Type

Read Only

Default: 00h

Access Bus Width: 8, 16, 32-bit

Header Type

b[7:0] ..........Header Type

This register indicates the device type of DS-1E.

This is hardwired to 00h.

10-13h: PCI Audio Memory Base Address

Read / Write

Default: 00000000h

Access Bus Width: 8, 16, 32-bit

b15

b14

b13

b12

b11

b10

MBA

b31

b30

b29

b28

b27

b26

b25

b24

b23

b22

b21

b20

b19

b18

b17

b16

MBA (higher)

b[31:15] ......MBA: Memory Base Address

This register indicates the physical Memory Base address of the PCI Audio registers in DS-1E.

The base

address can be located anywhere in the 32-bit address space.

Data in the DS-1E register is not

prefetchable.

Size of the register to be mapped into the memory space is 32,768 bytes.

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