oxfw911 ETC-unknow, oxfw911 Datasheet - Page 14

• Manufacturer Part Number: oxfw911
• Description: Ieee1394 To Ata/atapi Native Bridge
• Manufacturer: ETC-unknow

7 T
Notes : Negation of IORDY by the drive is used to extend the PIO cycle. The determination of whether the cycle is t o be
extended is made by the host after tA from the Assertion of DIOR# or DIOW#. The assertion and negation of IORDY are
described in the following three cases : -
1)
2)
3)
Data Sheet Rev 1.1
OXFORD SEMICONDUCTOR LTD.
Device never negates IORDY and no wait is generated.
Device negates IORDY before tA, but causes IORDY to be asserted before tA. IORDY is released prior to negation and
may be asserted for no more than 5ns before release : no wait generated.
Device negated IORDY before tA. IORDY is released prior to negation and may be asserted for no more than 5ns before
release : wait generated. The cycle completes after IORDY is reasserted. For cycles where a wait is generated and DIOR#
is asserted, the device shall place read data on DD[7:0] for tRD before asserting IORDY
ADDR valid
(Note1)
(Note2)
(Note3)
(WRITE)
IMING
DIOR# /
IORDY
IORDY
IORDY
(READ)
DIOW#
ID[7:0]
ID[7:0]
W
AVEFORMS
t1
Figure 3: PIO / Register Transfer to / from IDE device
tA
t0
tC
t2
tB
tRD
t3
t5
tC
t9
t4
t6
t6z
OXFW911
t2i
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