IBM DTCA-24090 Hard Drive Specifications - Page 109

Flush Cache E7h

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12.3 Flush Cache (E7h) Command Block Output Registers Register 76543210 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 1D Command 11100111 Command Block Input Registers Register 76543210 Data Error ...See Below... Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status ...See Below... Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 00000V00 Status Register 76543210 BSY RDY DF DSC DRQ COR IDX ERR 0V0V 0 V Figure 59. Flush Cache Command (E7h) This command causes the device to complete writing data from its cache. The device returns a status, R D Y = 1 and D S C = 1 (50h), after following sequence. Data in the write cache buffer is written to disk media. Return a successfull completion. | Note: Flush cache command does not invoke head unload. Command Descriptions 101

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12.3
Flush Cache (E7h)
Command Block Output Registers
Command Block Input Registers
Register
76543210
Register
76543210
Data
Data
Feature
Error
...See Below...
Sector Count
Sector Count
Sector Number
Sector Number
Cylinder Low
Cylinder Low
Cylinder High
Cylinder High
Device/Head
1
1D
Device/Head
Command
11100111
Status
...See Below...
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC UNC
0
IDN
0
ABT T0N AMN
BSY RDY DF
DSC DRQ COR IDX ERR
0
0
0
0
0
V
0
0
0
V
0
V
0
V
Figure 59. Flush Cache Command (E7h)
This command causes the device to complete writing data from its cache.
The device returns a status, RDY=1 and DSC=1 (50h), after following sequence.
Data in the write cache buffer is written to disk media.
Return a successfull completion.
|
Note:
Flush cache command does not invoke head unload.
Command Descriptions
101