SanDisk CompactFlash 5000 Manual descarregar pdf (Página 64)

SanDisk Industrial Grade CompactFlash 5000 Product Manual

Table 50: Initialize Drive Parameters

5.1.9

Read Buffer–E4H

The Read Buffer command enables the host to read the current contents of the

card's sector buffer. This command has the same protocol as the Read

Sector(s) command.

Table 51:

Read Buffer

5.1.10

Read DMA Command–C8H, C9H

The Read DMA command in Table 5-17 executes in a similar manner to the

READ SECTOR(S) command except for the following:

The host initializes the DMA channel prior to issuing the command.

Data transfers are qualified by DMARQ and are performed by the DMA

channel.

The device issues only one interrupt per command to indicate that data

transfer has terminated and status is available.

During the DMA transfer phase of a Read DMA command, the device provides

status of the BSY bit or the DRQ bit until the command is completed.

Table 52: Read DMA Command

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 96 97

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