dp83901a National Semiconductor Corporation, dp83901a Datasheet - Page 50

• Manufacturer Part Number: dp83901a
• Description: Serial Network Interface Controller
• Manufacturer: National Semiconductor Corporation

15 0 Switching Characteristics
Note 1 ACK is not generated until CS and SWR are low and the SNIC has synchronized to the register access In Dual Bus Systems additional cycles will be used
for a local DMA or Remote DMA to complete
Note 2 CS may be asserted before or after SWR If CS is asserted after SWR wackl is referenced from falling edge of CS
Symbol
rss
rsh
aswi
rwds
rwdh
ww
wackh
wackl
rswsl
Register Select Setup to ADS0 Low
Register Select Hold from ADS0 Low
Address Strobe Width In
Register Write Data Setup
Register Write Data Hold
Write Strobe Width from ACK
Write Strobe High to ACK High
Write Low to ACK Low (Notes 1 2)
Register Select to Write Strobe Low
Parameter
Register Write (Latched Using ADS0)
AC Specs DP83901A Note All Timing is Preliminary (Continued)
50
Min
10
17
15
20
21
50
10
n bcyc
Max
30
a
30
TL F 10469 – 34
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns