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Txmaxp), Section 4.56 – Texas Instruments TMS320DM357 User Manual

Page 119

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4.56 Maximum Packet Size for Peripheral/Host Transmit Endpoint (TXMAXP)

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Registers

The Maximum Packet Size for Peripheral/Host Transmit Endpoint (TXMAXP) is shown in

Figure 71

and

described in

Table 72

.

Figure 71. Maximum Packet Size for Peripheral/Host Transmit Endpoint (TXMAXP)

15

11

10

0

Reserved

MAXPAYLOAD

R-0

R/W-0

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset

Table 72. Maximum Packet Size for Peripheral/Host Transmit Endpoint (TXMAXP)

Field Descriptions

Bit

Field

Value

Description

15-11

Reserved

0

Reserved

10-0

MAXPAYLOAD

0-FFh

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 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.

SPRUGH3 – November 2008

Universal Serial Bus (USB) Controller

119

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