dp83901a National Semiconductor Corporation, dp83901a Datasheet - Page 59

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

15 0 Switching Characteristics
Note 1 The first port request is issued in response to the remote write command It is subsequently issued on T1 clock cycles following completion of remote DMA
cycles
Note 2 The start of the remote DMA write following WACK is dependent on where WACK is issued relative to BSCK and whether a local DMA is pending
Symbol
bprqh
wprql
wackw
bprdl
bprdh
Bus Clock to Port Request High (Note 1)
WACK to Port Request Low
WACK Pulse Width
Bus Clock to Port Read Low (Note 2)
Bus Clock to Port Read High
Parameter
Remote DMA (Write Cycle)
AC Specs DP83901A Note All Timing is Preliminary (Continued)
59
Min
25
Max
42
52
55
40
TL F 10469 – 43
Units
ns
ns
ns
ns
ns