
EZ-USB FX2 Technical Reference Manual
Page 10-52 EZ-USB FX2 Technical Reference Manual v2.1
10.4.7.1 Performing a FIFO-Write Transaction
Figure 10-38. Firmware Launches a FIFO-Write Waveform
Figure 10-39. Example FIFO-Write Transaction
EPxEF
FIFOADR[1:0]
Slave FIFOs
8051
Device Pins
EPxFF
EPxPF
SLOE
SLRD
SLWR
INPKTEND
IFCLK
FD[7:0]
EP4FIFOBUF
EP6FIFOBUF
EP8FIFOBUF
EP2FIFOBUF
EP8
EP6
EP4
EP2
GPIF
GPIF
8051
CTL[5:0]
RDY[5:0]
GPIFADR[8:0]
GPIF INTRDY
8051 INTRDY
30/48MHz
CLK
5 - 48MHz
XDATA
Waveform Descriptors
WF3
WF2
WF1
WF0
GPIF DONE
GPIFTRIG
i2
…
…
0x01
Peripheral data (Pdata)
0x01 0x02 0x03 0xFF
N N+1 N+2 512
TC=N
TC=N+1
TC=N+2
TC=512
0x02
0x03
0xFF
EPxFIFOBUF
…
…
GPIF TC
i2 i2 i2
…
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