
Universal Serial Bus Interface – On-The-Go Module
21-40
Freescale Semiconductor
21.3.3.19 Endpoint Flush Register (EPFLUSH)
This register is not defined in the EHCI specification. This register used only by the USB OTG module in
device mode.
21.3.3.20 Endpoint Status Register (EPSR)
This register is not defined in the EHCI specification. This register is only used by the USB OTG module
in device mode.
Table 21-35. EPPRIME Field Descriptions
Field
Description
31–20
Reserved, must be cleared.
19–16
PETB
Prime endpoint transmit buffer. For each endpoint, a corresponding bit requests that a buffer be prepared for a
transmit operation to respond to a USB IN/INTERRUPT transaction. Software must write a 1 to the corresponding
bit when posting a new transfer descriptor to an endpoint. Hardware automatically uses this bit to begin parsing for
a new transfer descriptor from the queue head and prepare a transmit buffer. Hardware clears this bit when
associated endpoint(s) is (are) successfully primed.
Note: These bits are momentarily set by hardware during hardware re-priming operations when a dTD retires, and
the dQH updates.
15–4
Reserved, must be cleared.
3–0
PERB
Prime endpoint receive buffer. For each endpoint, a corresponding bit requests that a buffer be prepared for a
receive operation to respond to a USB OUT transaction. Software must write a 1 to the corresponding bit when
posting a new transfer descriptor to an endpoint. Hardware automatically uses this bit to begin parsing for a new
transfer descriptor from the queue head and prepare a receive buffer. Hardware clears this bit when associated
endpoint(s) is (are) successfully primed.
Note: These bits are momentarily set by hardware during hardware re-priming operations when a dTD retires, and
the dQH updates.
Address: 0xFC0B_01B4 (EPFLUSH)
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
FETB
0
0
0
0
0
0
0
0
0
0
0
0
FERB
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 21-33. Endpoint Flush Register (EPFLUSH)
Table 21-36. EPFLUSH Field Descriptions
Field
Description
31–20
Reserved, must be cleared.
19–16
FETB
Flush endpoint transmit buffer. Writing a 1 to a bit in this field causes the associated endpoint to clear any primed
buffers. If a packet is in progress for an associated endpoint, that transfer continues until completion. Hardware
clears this register after the endpoint flush operation is successful.
15–4
Reserved, must be cleared.
3–0
FERB
Flush endpoint receive buffer. Writing a 1 to a bit in this field causes the associated endpoint to clear any primed
buffers. If a packet is in progress for an associated endpoint, that transfer continues until completion. Hardware
clears this register after the endpoint flush operation is successful. FERB[3] corresponds to endpoint 3.
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...