SERCON410B Datasheet, PDF (19/34 Pages) STMicroelectronics – SERCOS INTERFACE CONTROLLER

AC ELECTRICAL CHARACTERISTICS (Continued)
Figure 11. Write Access to Control Registers
SERCON410B
3.4.7 Write Access to Control Registers
Symbol
Parameter
Value
Unit
Min.
Type
Max.
Setup time A6-0, BHEN, PCSN0, PCS1,
DMAACKNT, WRN (only Motorola mode) to
tASU
falling edge WRN (Intel mode) or RDN
(Motorola mode, strobe active low) or rising
0
ns
edge RDN (Motorola mode, strobe active
high)
Hold time A6-0, BHEN, PCSN0, PCS1,
DMAACKNT, WRN (only Motorola mode) to
t_AHD
rising edge WRN (Intel mode) or RDN
(Motorola mode, strobeactive low) or falling
0
ns
edge RDN (Motorola mode, strobe active
high)
tPWRW
Pulse width WRN (Intel mode) or RDN
(Motorola mode)
30
ns
tDSU
Setup time D15-0 to end of write access
10
ns
t_DHD
Hold time D15-0 to end of write access
10
t_PRQ
Delay WRN or RDN to DMAREQT low
ns
30
ns
15/30
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