Cypress Semiconductor FX2LP Información técnica Pagina 243

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Chapter 10. General Programmable Interface (GPIF) Page 10-53
Figure 10-40. FIFO-Write Transaction Waveform
The above waveform executes until the Transaction Counter expires (until it counts to 512, in this
example). The Transaction Counter is decremented and sampled on each pass through the Idle
State.
Each iteration of the waveform writes a data value from the FIFO to the FIFO Data bus, then dec-
rements and checks the Transaction Counter. When it expires, the DONE bit is set to 1 and the
GPIFDONE interrupt request is asserted.
Figure 10-41. GPIFTool Setup for the Waveform of Figur e10-40
State 01234567
AddrMode Same Val Same Val Same Val Same Val Same Val Same Val Same Val
DataMode No Data No Data
Activate NO Data NO Data NO Data NO Data
NextData SameData SameData SameData SameData SameData SameData
NextData
Int Trig No Int No Int No Int No Int No Int No Int No Int
IF/Wait Wait 4
Wait 1 Wait 1 Wait 1 Wait 1 Wait 1 Wait 1
Term A
LFUNC
Term B
Branch1
Branch0
Re-execute
CTL0
1 1 0 1 1111
CTL1 11111111
CTL2 11111111
CTL3 11111111
CLT4 11111111
CTL5 11111111
hi-Z
0x0000
hi-Z
Pdata++
IFCLK
GADR[8:0]
CTL0
RDY0
FD[7:0]
NDP
NDP
NDP
– I1
NDP
i3
i2
i1
NDP
i4
NDP
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