GL811USB – USB 2.0 to ATA / ATAPI Bridge Controller
6.4.2.4 Host terminating a Multiword DMA data burst
CS0_/ CS1_
DMARQ
(Note2)
DMACK_
(Note1)
DIOR_/DIOW_
Read DD(15:0)
Write DD(15:0)
tN
t0
tK
tD
tJ
tE
tZ
tG tF
tG
tH
Note:
1.To terminate the transmission of a data burst, the Host shall negate DMACK_ within the
specified time after a DIOR_ or DIOW_ pulse. No further DIOR_ or DIOW_ pulses shall be
asserted for this burst.
2.If the device is able to continue the transfer of data, the device may leave DMARQ asserted
and wait for the host to reassert DMACK_ or may negate DMARQ at any time after detecting
that DMACK_ has been negated.
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