Texas Instruments TMS320DM357 用户手册
4.61 Maximum Packet Size for Peripheral Host Receive Endpoint (RXMAXP)
Registers
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The Maximum Packet Size for Peripheral Host Receive Endpoint (RXMAXP) is shown in
and
described in
.
Figure 76. Maximum Packet Size for Peripheral Host Receive Endpoint (RXMAXP)
15
11
10
0
Reserved
MAXPAYLOAD
R-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 77. Maximum Packet Size for Peripheral Host Receive Endpoint (RXMAXP) Field Descriptions
Bit
Field
Value
Description
15-11
Reserved
0
Reserved
10-0
MAXPAYLOAD
0-FFh
Defines the maximum amount of data that can be transferred through the selected Receive
endpoint in a single frame/microframe (high-speed transfers). The value set can be up to 1024
bytes, but is subject to the constraints placed by the USB Specification on packet sizes for Bulk,
Interrupt, and Isochronous transfers in full-speed and high-speed operations. The value written to
this register should match the wMaxPacketSize field of the Standard Endpoint Descriptor for the
associated endpoint. A mismatch could cause unexpected results.
endpoint in a single frame/microframe (high-speed transfers). The value set can be up to 1024
bytes, but is subject to the constraints placed by the USB Specification on packet sizes for Bulk,
Interrupt, and Isochronous transfers in full-speed and high-speed operations. The value written to
this register should match the wMaxPacketSize field of the Standard Endpoint Descriptor for the
associated endpoint. A mismatch could cause unexpected results.
Universal Serial Bus (USB) Controller
124
SPRUGH3 – November 2008