Yamaha YMF724F specifications 4C-4Dh D-DMA Slave Configuration, 50h Capability ID

YMF724F

4C-4Dh: D-DMA Slave Configuration

Read / Write

Default: 0000h

Access Bus Width: 8, 16, 32-bit

b15

b14

b13

b12

b11

b10

b9

b8

b7

b6

b5

b4

b3

b2

b1

b0

Base Address

EA

TS

CE

b0

CE: Channel Enable

This bit enables the Distributed DMA function. “0”: Disable Distributed DMA (default) “1”: Enable Distributed DMA

b[2:1] ..........TS: Transfer Size

These bits indicate the size of the DMA transfer. Since DS-1 supports only 8-bit DMA transfer, the bits are hardwired to 00b.

b3 EA: Extended Address

DS-1 does not support extended address mode. This bit is hardwired to 0b.

b[15:4] ........Base Address : D-DMA Slave Base Address

These bits indicate the D-DMA slave base address.

50h: Capability ID

Read Only

Default: 01h

Access Bus Width: 8, 16, 32-bit

b7

b6

b5

b4

b3

b2

b1

b0

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.

September 21, 1998

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