Nxp semiconductors – NXP Semiconductors LPC24XX UM10237 User Manual
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UM10237_4
© NXP B.V. 2009. All rights reserved.
User manual
Rev. 04 — 26 August 2009
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NXP Semiconductors
UM10237
Chapter 13: LPC24XX USB device controller
9.4.4 USB Endpoint Interrupt Set register (USBEpIntSet - 0xFFE0 C23C)
Writing a one to a bit in this register sets the corresponding bit in USBEpIntSt. Writing zero
has no effect. Each endpoint has its own bit in this register. USBEpIntSet is a write only
register.
9.4.5 USB Endpoint Interrupt Priority register (USBEpIntPri - 0xFFE0 C240)
This register determines whether an endpoint interrupt is routed to the EP_FAST or
EP_SLOW bits of USBDevIntSt. If a bit in this register is set to one, the interrupt is routed
to EP_FAST, if zero it is routed to EP_SLOW. Routing of multiple endpoints to EP_FAST
or EP_SLOW is possible.
Note that the USBDevIntPri register determines whether the EP_FAST interrupt is routed
to the USB_INT_REQ_HP or USB_INT_REQ_LP interrupt line.
USBEpIntPri is a write only register.
Bit
15
14
13
12
11
10
9
8
Symbol
EP7TX
EP7RX
EP6TX
EP6RX
EP5TX
EP5RX
EP4TX
EP4RX
Bit
7
6
5
4
3
2
1
0
Symbol
EP3TX
EP3RX
EP2TX
EP2RX
EP1TX
EP1RX
EP0TX
EP0RX
Table 312. USB Endpoint Interrupt Clear register (USBEpIntClr - address 0xFFE0 C238) bit description
Bit
Symbol
Value
Description
Reset value
31:0
See
USBEpIntClr
bit allocation
table above
0
No effect.
0
1
Clears the corresponding bit in USBEpIntSt, by executing the SIE Select
Endpoint/Clear Interrupt command for this endpoint.
Table 313. USB Endpoint Interrupt Set register (USBEpIntSet - address 0xFFE0 C23C) bit allocation
Reset value: 0x0000 0000
Bit
31
30
29
28
27
26
25
24
Symbol
EP15TX
EP15RX
EP14TX
EP14RX
EP13TX
EP13RX
EP12TX
EP12RX
Bit
23
22
21
20
19
18
17
16
Symbol
EP11TX
EP11RX
EP10TX
EP10RX
EP9TX
EP9RX
EP8TX
EP8RX
Bit
15
14
13
12
11
10
9
8
Symbol
EP7TX
EP7RX
EP6TX
EP6RX
EP5TX
EP5RX
EP4TX
EP4RX
Bit
7
6
5
4
3
2
1
0
Symbol
EP3TX
EP3RX
EP2TX
EP2RX
EP1TX
EP1RX
EP0TX
EP0RX
Table 314. USB Endpoint Interrupt Set register (USBEpIntSet - address 0xFFE0 C23C) bit description
Bit
Symbol
Value
Description
Reset value
31:0
See
USBEpIntSet
bit allocation
table above
0
No effect.
0
1
Sets the corresponding bit in USBEpIntSt.