
Universal Serial Bus Interface – On-The-Go Module
Freescale Semiconductor
21-23
21.3.3.4
Frame Index Register (FRINDEX)
In host mode, the controller uses this register to index the periodic frame list. The register updates every
125 microseconds (once each microframe). Bits [N–3] select a particular entry in the periodic frame list
during periodic schedule execution. The number of bits used for the index depends on the size of the frame
list as set by system software in the USBCMD[FS] field.
This register must be a longword. Byte writes produce undefined results. This register cannot be written
unless the USB OTG controller is in halted state as the USBSTS[HCH] bit indicates. A write to this
register while the USBSTS[RS] bit is set produces undefined results. Writes to this register also affect the
SOF value.
In device mode (USB OTG-only), this register is read-only, and the USB OTG controller updates the
FRINDEX[13–3] bits from the frame number the SOF marker indicates. When the USB bus receives a
SOF, FRINDEX[13–3] checks against the SOF marker. If FRINDEX[13–3] is different from the SOF
marker, FRINDEX[13–3] is set to the SOF value and FRINDEX[2–0] is cleared (SOF for 1 ms frame). If
FRINDEX[13–3] equals the SOF value, FRINDEX[2–0] is incremented (SOF for 125
μ
sec microframe.)
3
FRE
Frame list rollover enable. When this bit and the USBSTS[FRI] bit are set, controller issues an interrupt.
Software clearing the USBSTS[FRI] bit acknowledges the interrupt. Used only in host mode.
0 Disabled
1 Enabled
2
PCE
Port change detect enable. When this bit and the USBSTS[PCI] bit are set, controller issues an interrupt.
Software clearing the USBSTS[PCI] bit acknowledges the interrupt.
0 Disabled
1 Enabled
1
UEE
USB error interrupt enable. When this bit and the USBSTS[UEI] bit are set, controller issues an interrupt at the
next interrupt threshold. Software clearing the USBSTS[UEI] bit acknowledges the interrupt.
0 Disabled
1 Enabled
0
UE
USB interrupt enable. When this bit is 1 and the USBSTS[UI] bit is set, the USB OTG controller issues an
interrupt at the next interrupt threshold. Software clearing the USBSTS[UI] bit acknowledges the interrupt.
0 Disabled
1 Enabled
Address: 0xFC0B_014C (FRINDEX)
Access: User read/write
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
R 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
FRINDEX
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 21-18. Frame Index Register (FRINDEX)
Table 21-19. USBINTR Field Descriptions (continued)
Field
Description
MCF5329 Reference Manual, Rev 3
Содержание MCF5329
Страница 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 126: ...Enhanced Multiply Accumulate Unit EMAC 4 20 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 564: ...Liquid Crystal Display Controller LCDC 22 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 692: ...Programmable Interrupt Timers PIT0 PIT3 28 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 720: ...Queued Serial Peripheral Interface QSPI 30 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 790: ...Message Digest Hardware Accelerator MDHA 33 20 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Страница 902: ...Register Memory Map Quick Reference A 26 Freescale Semiconductor MCF5329 Reference Manual Rev 3...