dp83902a National Semiconductor Corporation, dp83902a Datasheet - Page 63

• Manufacturer Part Number: dp83902a
• Description: St-nictm Serial Network Interface Controller For Twisted Pair
• 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 DP83902A Note All Timing is Preliminary (Continued)
63
Min
25
Max
42
52
55
40
Units
TL F 11157 – 44
ns
ns
ns
ns
ns