EZ-USB Datasheet, PDF (242/334 Pages) Cypress Semiconductor – The EZ-USB USB Integrated Circuit

12.16 SETUP Data
SETUPBUF
b7
b6
D7
D6
R
R
x
x
SETUP Data Buffer (8 Bytes)
b5
b4
b3
b2
D5
D4
D3
D2
R
R
R
R
x
x
x
x
Figure 12-40. SETUP Data Buffer
7FE8-7FEF
b1
b0
D1
D0
R
R
x
x
This buffer contains the 8 bytes of SETUP packet data from the most recently received
CONTROL transfer.
The data in SETUPBUF is valid when the SUDAVIR (Setup Data Available Interrupt
Request) bit is set. The 8051 responds to the SUDAV interrupt by reading the SETUP
bytes from this buffer.
EZ-USB TRM v1.9
Chapter 12. EZ-USB Registers
Page 12-49