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Table 4.20 Device parameter information (4/5)
Word Value Bits Description
84 4000h Command set supported
15 Always B'0'.
14 Always B'1'.
13-0 Reserved
85 4278h
(Default value)
Command set supported and whether the function is enabled or
disabled
(A value of less than 1 indicates that the command is supported and
enabled.)
15 IDENTIFY DEVICE DMA command support (B'0')
14 NOP command support (B'1')
13 READ BUFFER command support (B'0')
12 WRITE BUFFER command support (B'0')
11 WRITE VERIFY command support (B'0')
10 Host protect area function support (B'0')
9 DEVICE RESET command support (B'1')
8 SERVICE command interrupt is enabled (B'0': Default value)
7 Interrupt at release is enabled (B'0': Default value)
6 Read ahead cache is enabled (B'1': Default value)
5 Write cache is enabled (B'1': Default value)
4 Packet command function support (B'1')
3 Power management function support (B'1')
2 Removable media function support (B'0')
1 Security mode enabled (B'0')
0 SMART function is enabled (B'0')
86 0000h Command set supported and whether the function is enabled or disabled
(A value of less than 1 indicates that the command is supported and
enabled.)
15-1 Reserved (B'0')
0 DOWNLOAD MICROCODE command supported (B'0')
87 4000h Command set supported and whether the function is enabled or disabled
(A value of less than 1 indicates that the command is supported and
enabled.)
15 Always B'0'.
14 Always B'1'.
13-0 Reserved