LM3S5D91 Datasheet, PDF (1029/1340 Pages) Texas Instruments – Stellaris® LM3S5D91 Microcontroller

Stellaris^® LM3S5D91 Microcontroller
OTG A /
Host
Register 285: USB Host Receive Polling Interval Endpoint 1
(USBRXINTERVAL1), offset 0x11D
Register 286: USB Host Receive Polling Interval Endpoint 2
(USBRXINTERVAL2), offset 0x12D
Register 287: USB Host Receive Polling Interval Endpoint 3
(USBRXINTERVAL3), offset 0x13D
Register 288: USB Host Receive Polling Interval Endpoint 4
(USBRXINTERVAL4), offset 0x14D
Register 289: USB Host Receive Polling Interval Endpoint 5
(USBRXINTERVAL5), offset 0x15D
Register 290: USB Host Receive Polling Interval Endpoint 6
(USBRXINTERVAL6), offset 0x16D
Register 291: USB Host Receive Polling Interval Endpoint 7
(USBRXINTERVAL7), offset 0x17D
Register 292: USB Host Receive Polling Interval Endpoint 8
(USBRXINTERVAL8), offset 0x18D
Register 293: USB Host Receive Polling Interval Endpoint 9
(USBRXINTERVAL9), offset 0x19D
Register 294: USB Host Receive Polling Interval Endpoint 10
(USBRXINTERVAL10), offset 0x1AD
Register 295: USB Host Receive Polling Interval Endpoint 11
(USBRXINTERVAL11), offset 0x1BD
Register 296: USB Host Receive Polling Interval Endpoint 12
(USBRXINTERVAL12), offset 0x1CD
Register 297: USB Host Receive Polling Interval Endpoint 13
(USBRXINTERVAL13), offset 0x1DD
Register 298: USB Host Receive Polling Interval Endpoint 14
(USBRXINTERVAL14), offset 0x1ED
Register 299: USB Host Receive Polling Interval Endpoint 15
(USBRXINTERVAL15), offset 0x1FD
USBRXINTERVALn is an 8-bit register that, for interrupt and isochronous transfers, defines the
polling interval for the currently selected receive endpoint. For bulk endpoints, this register defines
the number of frames after which the endpoint should time out on receiving a stream of NAK
responses.
The USBRXINTERVALn register value defines a number of frames, as follows:
Transfer Type
Interrupt
Isochronous
Speed
Low-Speed or Full-Speed
Full-Speed
Valid values (m)
0x01 – 0xFF
0x01 – 0x10
Interpretation
The polling interval is m frames.
The polling interval is 2^(m-1) frames.
January 22, 2012
Texas Instruments-Production Data
1029