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Table 4.20 Device parameter information (2/5)
Word Value Bits Description
51 0200h 15-8 PIO data transfer cycle timing mode
7-0 Reserved
52 0000h 15-0 Reserved
53 0003h 15-3
2
1
0
Reserved
88 word information is valid.
(In the case of models which do not support Ultra-DMA transfers,
B'0'.)
Information in words 64 to 70 is valid. (B'1')
Information in words 54 to 58 is valid. (B'1')
54-62 0000h Reserved
63 0407h Multiword DMA transfer mode
(Default value) Active mode
15-11 Reserved (B'0')
10 1 is shown when Mode 2 is selected.
9 1 is shown when Mode 1 is selected.
8 1 is shown when Mode 0 is selected.
Multiword DMA transfer mode supported
7-3 Reserved (B'0')
2 Mode 2 (B'1')
1 Mode 1 (B'1')
0 Mode 0 (B'1')
64 0003h Flow control PIO transfer mode
15-8 Reserved
PIO transfer mode supported
7-2 Reserved (B'0)
1 Mode 4 (B'1')
0 Mode 3 (B'1')
65 0078h (120) Minimum multiword DMA transfer time per word (ns)
66 0078h (120) Recommended multiword DMA transfer time (ns)
67 017Fh (383) Minimum PIO transfer cycle time when flow control is disabled (ns)
68 0078h Minimum PIO transfer cycle time when flow control using IORDY
is enabled (ns)