dp8344b National Semiconductor Corporation, dp8344b Datasheet - Page 92

• Manufacturer Part Number: dp8344b
• Description: Biphase Communications Processor?bcp
• Manufacturer: National Semiconductor Corporation

4 0 Remote Interface and Arbitration System (RIAS)
(Continued)
TL F 9336 – H3
(c) This timing diagram shows a remote access setting up in time for WR-PEND rising to latch in the proper value of
CMD The only set of arrows shows the BCP sampling the second remote access’s CMD value when WR-PEND rises
The value of CMD will not be sampled again The BCP will carry out the second remote access as it was intended
TL F 9336 – H4
(d) This timing diagram shows a remote access starting after a half T-state plus a hold time since WR-PEND
rose The first set of arrows shows the BCP sampling the value of CMD when WR-PEND rises The second set of
arrows shows the BCP recognizing that no remote access has started and the value of CMD will be sampled
for the next remote access The third set of arrows shows the BCP sampling the correct value of CMD for the second
remote access The BCP will carry out the second remote access as it was intended
FIGURE 4-26 Rest Time for Latched Write Mode (Continued)
92