Preliminary
Registers
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20.9.1.40 USBSS IRQ_FRAME_THRESHOLD_RX1_2 Register (IRQFRAMETHOLDRX12)
The USBSS IRQ_FRAME_THRESHOLD_RX1_2 register (IRQFRAMETHOLDRX12) defines the size of
the four FRAME thresholds for interrupt pacing for USB1. Each threshold contains is an 8-bit unsigned
number and can range from 0 to 255. A possible interrupt can be triggered if the count for that specific
endpoint has exceeded the value of the threshold. The counter for the compared value is also an 8-bit
unsigned number; therefore, setting the threshold to 255 prevents the possibility of a trigger.
The USBSS IRQ_FRAME_THRESHOLD_RX1_2 register is shown in
and described in
.
Figure 20-61. USBSS IRQ_FRAME_THRESHOLD_RX1_2 Register (IRQFRAMETHOLDRX12)
31
24 23
16 15
8
7
0
frame_thres_rx1_11
frame_thres_rx1_10
frame_thres_rx1_9
frame_thres_rx1_8
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 20-71. USBSS IRQ_FRAME_THRESHOLD_RX1_2 Register (IRQFRAMETHOLDRX12) Field
Descriptions
Bits
Field
Description
31-24
frame_thres_rx1_11
FRAME threshold value for rx_pkt_cmp_0 for USB1 endpoint 11.
23-16
frame_thres_rx1_10
FRAME threshold value for rx_pkt_cmp_0 for USB1 endpoint 10.
15-8
frame_thres_rx1_9
FRAME threshold value for rx_pkt_cmp_0 for USB1 endpoint 9.
7-0
frame_thres_rx1_8
FRAME threshold value for rx_pkt_cmp_0 for USB1 endpoint 8.
20.9.1.41 USBSS IRQ_FRAME_THRESHOLD_RX1_3 Register (IRQFRAMETHOLDRX13)
The USBSS IRQ_FRAME_THRESHOLD_RX1_3 register (IRQFRAMETHOLDRX13) defines the size of
the four FRAME thresholds for interrupt pacing for USB1. Each threshold contains is an 8-bit unsigned
number and can range from 0 to 255. A possible interrupt can be triggered if the count for that specific
endpoint has exceeded the value of the threshold. The counter for the compared value is also an 8-bit
unsigned number; therefore, setting the threshold to 255 prevents the possibility of a trigger.
The USBSS IRQ_FRAME_THRESHOLD_RX1_3 register is shown in
and described in
.
Figure 20-62. USBSS IRQ_FRAME_THRESHOLD_RX1_3 Register (IRQFRAMETHOLDRX13)
31
24 23
16 15
8
7
0
frame_thres_rx1_15
frame_thres_rx1_14
frame_thres_rx1_13
frame_thres_rx1_12
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 20-72. USBSS IRQ_FRAME_THRESHOLD_RX1_3 Register (IRQFRAMETHOLDRX13) Field
Descriptions
Bits
Field
Description
31-24
frame_thres_rx1_15
FRAME threshold value for rx_pkt_cmp_0 for USB1 endpoint 15.
23-16
frame_thres_rx1_14
FRAME threshold value for rx_pkt_cmp_0 for USB1 endpoint 14.
15-8
frame_thres_rx1_13
FRAME threshold value for rx_pkt_cmp_0 for USB1 endpoint 13.
7-0
frame_thres_rx1_12
FRAME threshold value for rx_pkt_cmp_0 for USB1 endpoint 12.
1854
Universal Serial Bus (USB)
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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