Usb Maximum Receive Data Endpoint N Registers (Usbrxmaxp[1]-Usbrxmaxp[15]); Usb Maximum Receive Data Endpoint N Registers (Usbrxmaxp[N]); Usb Maximum Receive Data Endpoint N Registers (Usbtxmaxp[N]) Field Descriptions - Texas Instruments Concerto F28M36 Series Technical Reference Manual

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18.5.36 USB Maximum Receive Data Endpoint n Registers (USBRXMAXP[1]-USBRXMAXP[15])

The USB maximum receive data endpoint n 16-bit registers (USBRXMAXP[n]) define the maximum
amount of data that can be transferred through the selected receive endpoint in a single operation.
Bits 10:0 define (in bytes) the maximum payload transmitted in a single transaction. 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 operation.
The total amount of data represented by the value written to this register must not exceed the FIFO size
for the transmit endpoint, and must not exceed half the FIFO size if double-buffering is required.
Note: USBRXMAXP[n] must be set to an even number of bytes for proper interrupt generation in μDMA
Basic Mode.
For the specific offset for each register see
Mode(s): OTG A or Host
The USBRXMAXP[n] registers are shown in
Figure 18-45. USB Maximum Receive Data Endpoint n Registers (USBRXMAXP[n])
15
Reserved
R-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 18-48. USB Maximum Receive Data Endpoint n Registers (USBTXMAXP[n]) Field
Bit Field Value
15-11 Reserved
10-0 MAXLOAD
SPRUHE8E – October 2012 – Revised November 2019
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Table
OTG B or Device
Figure 18-45
11 10
Description
0 Reserved
Maximum Payload specifies the maximum payload in bytes per transaction.
Copyright © 2012–2019, Texas Instruments Incorporated
18-4.
and described in
MAXLOAD
R/W-000
Descriptions
M3 Universal Serial Bus (USB) Controller
Register Descriptions
Table 18-48.
0
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