Preliminary
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Registers
20.9.1.42 USBSS IRQ_FRAME_ENABLE_0 Register (IRQFRAMEENABLE0)
The USBSS IRQ_FRAME_ENABLE_0 register (IRQFRAMEENABLE0) contains 30 enables for USB0.
Fifteen enables are assigned to the 15 endpoints associated with the tx_pkt_cmp_0 interrupt and 15
enables are assigned to the 15 endpoints associated with the rx_pkt_cmp_0 interrupt. Endpoint 0 for
both the tx and rx does not exist; but it is included for completeness of this register.
If the enable is set; then that specific endpoint can generate an interrupt if the frame count has
exceeded the threshold.
If the enable is not set; then no hardware interrupt will be generated for that specific endpoint. It is still
possible to generate the interrupt via software. If the enable is cleared; then that specific endpoint
cannot generate an interrupt regardless if the frame count has exceeded the threshold or not. The
USBSS IRQ_FRAME_ENABLE_0 register is shown in
and described in
Figure 20-63. USBSS IRQ_FRAME_ENABLE_0 Register (IRQFRAMEENABLE0)
31
18
17
16
frame_en_rx0_15
frame_en_rx0_
Rsvd
1
R/W-0
R-0
15
2
1
0
frame_en_tx0_15
frame_en_tx0_
Rsvd
1
R/W-0
R-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 20-73. USBSS IRQ_FRAME_ENABLE_0 Register (IRQFRAMEENABLE0) Field Descriptions
Bits
Field
Description
31-18
frame_en_rx0_15
FRAME threshold enable value for rx_pkt_cmp_0 for USB0 endpoint 15.
17
frame_en_rx0_1
FRAME threshold enable value for rx_pkt_cmp_0 for USB0 endpoint 1.
16
Reserved
Always read as 0. Writes have no effect.
15-2
frame_en_tx0_15
FRAME threshold enable value for tx_pkt_cmp_0 for USB0 endpoint 15.
1
frame_en_tx0_1
FRAME threshold enable value for tx_pkt_cmp_0 for USB0 endpoint 1.
0
Reserved
Always read as 0. Writes have no effect.
1855
SPRUGX9 – 15 April 2011
Universal Serial Bus (USB)
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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