Universal Serial Bus Controller User's Guide
4.4 Auto Request Register (AUTOREQ)
Registers
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The Auto Request Register (AUTOREQ) is shown in Figure 19 and described in Table 20 .
Figure 19. Auto Request Register (AUTOREQ)
31 16
Reserved
R-0
15 8 7 6 5 4 3 2 1 0
Reserved Rx4 Rx3 Rx2 Rx1
R-0 R/W-0 R/W-0 R/W-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; - n = value after reset
Table 20. Auto Request Register (AUTOREQ) Field Descriptions
Bit Field Value Description
31-8 Reserved 0 Reserved
7-6 Rx4 0-3h RX endpoint 4 Auto Req enable.
0 No auto req
1h Auto req on all but EOP
2h Reserved
3h Auto req always
5-4 Rx3 0-3h RX endpoint 3 Auto Req enable.
0 No auto req
1h Auto req on all but EOP
2h Reserved
3h Auto req always
3-2 Rx2 0-3h RX endpoint 2 Auto Req enable.
0 No auto req
1h Auto req on all but EOP
2h Reserved
3h Auto req always
1-0 Rx1 0-3h RX endpoint 1 Auto Req enable.
0 No auto req
1h Auto req on all but EOP
2h Reserved
3h Auto req always
Universal Serial Bus (USB) Controller84 SPRUGH3 – November 2008
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