FX929B Datasheet, PDF (44/48 Pages) CML Microcircuits – Flexible Operating Modes

4-Level FSK Modem Data Pump
FX929B
µC Parallel Interface Timings (ref. Figure 23)
t_ACSL
Address valid to CSN low time
t_AH
t_CSH
t_CSHI
Address hold time
CSN hold time
CSN high time
t_CSRWL CSN to WRN or RDN low time
t_DHR
t_DHW
Read data hold time
Write data hold time
t_DSW
Write data setup time
t_RHCSL
t_RACL
t_RARL
RDN high to CSN low time (write)
Read access time from CSN low
Read access time from RDN low
t_RL
t_RX
t_WHCSL
RDN low time
RDN high to D0-D7 3-state time
WRN high to CSN low time (read)
t_WL
WRN low time
Notes Min.
0
0
0
10
6.0
0
0
0
90.0
0
11
11
200
0
200
Typ. Max.
Units
ns
ns
ns
clock cycles
ns
ns
ns
ns
ns
175
ns
145
ns
ns
50.0
ns
ns
ns
Notes:
10. Xtal/Clock cycles at the XTAL/CLOCK pin.
11. With 30pF max to V_SS on D0 - D7 pins.
Figure 23 µC Parallel Interface Timings
© 1997 Consumer Microcircuits Limited
44
D/929B/1