
Universal Serial Bus Interface – On-The-Go Module
Freescale Semiconductor
21-27
21.3.3.10 Master Interface Data Burst Size Register (BURSTSIZE)
This register is not defined in the EHCI specification. BURSTSIZE dynamically controls the burst size
during data movement on the initiator (master) interface.
21.3.3.11 Transmit FIFO Tuning Control Register (TXFILLTUNING)
This register is not defined in the EHCI specification. The TXFILLTUNING register controls performance
tuning associated with how the module posts data to the TX latency FIFO before moving the data onto the
USB bus. The specific areas of performance include how much data to post into the FIFO and an estimate
for how long that operation takes in the target system.
Definitions:
T
0
= Standard packet overhead
T
1
= Time to send data payload
T
s
= Total packet flight time (send-only) packet (
T
s
=
T
0
+
T
1
)
T
ff
= Time to fetch packet into TX FIFO up to specified level
T
p
= Total packet time (fetch and send) packet (
T
p
=
T
ff
+
T
s
)
Table 21-26. TTCTRL Field Descriptions
Field
Description
31
Reserved, must be cleared.
30–24
TTHA
TT Hub Address. This field is used to match against the Hub Address field in a QH or siTD to determine if the
packet is routed to the internal TT for directly attached FS/LS devices. If the hub address in the QH or siTD
does not match this address then the packet is broadcast on the high speed ports destined for a downstream
HS hub with the address in the QH or siTD.
23–0
Reserved, must be cleared.
Address: 0xFC0B_0160 (BURSTSIZE)
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
TXPBURST
RXPBURST
W
Reset 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
Figure 21-24. Master Interface Data Burst Size (BURSTSIZE)
Table 21-27. BURSTSIZE Field Descriptions
Field
Description
31–16
Reserved, must be cleared.
15–8
TXPBURST
Programable TX burst length. Represents the maximum length of a burst in 32-bit words while moving data from
system memory to the USB bus. Must not be set to greater than 16.
7–0
RXPBURST
Programable RX burst length. This register represents the maximum length of a burst in 32-bit words while
moving data from the USB bus to system memory. Must not be set to greater than 16.
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...
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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...