RMOD1-RMOD0 for read strobes and WMOD1-WMOD0 for write strobes, as shown in
Figure 8-11 (write) and Figure 8-12 (read).
Note
When using the fast transfer feature, be sure to enable the FRD# and FWR# strobe sig-
nals in the PORTACFG register.
8.7.1 Fast Write Waveforms
tCL
4 1.66 n s
C LK24
stretch=000
D[7..0]
Output
stretch=000
stretch=000
stretch=000
stretch=000
FW R #[00]
FW R #[01]
FW R #[10]
FW R #[11]
D[7..0]
Output
stretch=001
stretch=001
stretch=001
stretch=001
stretch=001
FW R #[00]
FW R #[01]
FW R #[10]
FW R #[11]
[nn] = W M 1:W M 0, W PO L=0
N ote: If W PO L=1 the w aveform s are inverted
Figure 8-11. Fast Write Timing
Page 8-12
Chapter 8. EZ-USB CPU
EZ-USB TRM v1.9
CYPRESS [ CYPRESS ]
