Hayes Microcomputer Products RCV56HCF manual External Device Bus Timing, Write

RCV56HCF PCI/CardBus Modem Designer’s Guide

3.3.3 External Device Bus Timing

The external Device Bus timing is listed in Table 3-12 and illustrated in Figure 3-7.

Table 3-12. Timing - External Device Bus Interface

Symbol	Description	Min.	Typ.	Max.	Units	Test Conditions
			Read
tAS	Address setup	40	–	–	ns
tAH	Address hold	10	–	–	ns
tCSS	Chip select setup	40	–	–	ns
tCSH	Chip select hold	108	–	144	ns
tRW	Read pulse width	150	–	–	ns
tRDA	Read data access	–	–	36	ns
tRDH	Read data hold	0	–	–	ns
			Write
tAS	Address setup	40	–	–	ns
tAH	Address hold	10	–	–	ns
tCSS	Chip select setup	40	–	–	ns
tCSH	Chip select hold	108	–	144	ns
tWW	Write pulse width	150	–	–	ns
tWDS	Write data setup	36	–	–	ns
tRDH	Write data hold	36	–	72	ns

1129 ROCKWELL PROPRIETARY INFORMATION 3-23