SL811ST CYPRESS [Cypress Semiconductor], SL811ST Datasheet - Page 24

• Manufacturer Part Number: SL811ST
• Description: SL811S/T USB Dual Speed Slave Controller
• Manufacturer: CYPRESS [Cypress Semiconductor]

7.5.3
Note: nWR must go low after nDACK goes low in order for nDRQ to clear. If this sequence is not implemented as requested, the
next nDRQ will be not inserted.
Document #: 38-08009 Rev. **
tdack
tdwrlo
tdakrq
tdwrp
tdhld
tdsu
tackrq
tackwrh
twrcycle
Parameter
n D A C K
SL811S DMA Write Cycle
nD R Q
D 0-D 7
nW R
nDACK low
nDACK to nWR low delay
nDACK low to nDRQ high delay
nWR pulse width
Data hold after nWR high
Data set-up to nWR strobe low
NDACK high to nDRQ low
NDACK high to nDRQ low
DMA Write Cycle Time
Description
tdsu
tdakrq
150 ns
tdw rlo
65 ns
80ns
60 ns
Min.
5 ns
5 ns
5 ns
5 ns
5 ns
tdack
tdw rp
D A TA
tackrq
Typ.
tdhld
tackw rh
SL811S/T
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