Texas Instruments TMS320DM357 用户手册
4.70 Receive Type Register (Host mode only) (HOST_RXTYPE)
4.71 Receive Interval Register (Host mode only) (HOST_RXINTERVAL)
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Registers
The Receive Type Register (Host mode only) (HOST_RXTYPE) is shown in
and described in
.
Figure 85. Receive Type Register (Host mode only) (HOST_RXTYPE)
7
6
5
4
3
0
SPEED
PROT
RENDPN
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; -n = value after reset
Table 86. Receive Type Register (Host mode only) (HOST_RXTYPE) Field Descriptions
Bit
Field
Value
Description
7-6
SPEED
0-3h
Operating Speed of Target Device
0
Illegal
1h
High
2h
Full
3h
Low
5-4
PROT
0-3h
Set this to select the required protocol for the transmit endpoint
0
Control
1h
Isochronous
2h
Bulk
3h
Interrupt
3-0
RENDPN
0-Fh
Set this value to the endpoint number contained in the Receive endpoint descriptor returned to the USB
controller during device enumeration
controller during device enumeration
The Receive Interval Register (Host mode only) (HOST_RXINTERVAL) is shown in
and
described in
.
Figure 86. Receive Interval Register (Host mode only) (HOST_RXINTERVAL)
7
0
POLINTVL_NAKLIMIT
R/W-0
LEGEND: R/W = Read/Write; -n = value after reset
SPRUGH3 – November 2008
Universal Serial Bus (USB) Controller
131