Fujitsu MPB3052AT User Manual download pdf (Page 122)

C141-E045-02EN 5 - 57

Status read

*1 When the IDD receives a command that hits the cache data during read-ahead, and

transfers data from the buffer without reading from the disk medium.

255210Word

IOCS16-

IOR-

Data

Data Reg.

Selection

INTRQ

DRQ

Min. 30 µs (*1)

Expanded

Command

f dd

Command

BSY

INTRQ

DRDY

Parameter write

DRQ

Data transfer

• • • •

• • •

• • • •

Figure 5.3 Read Sector(s) command protocol

Even if the error status exists, the drive makes a preparation (setting the DRQ bit) of data

transfer. It is up to the host whether data is transferred. In other words, the host should

receive the data of the sector (512 bytes of uninsured dummy data) or release the DRQ by

resetting.

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Fujitsu MPB3052AT User Manual Page 122