UM10237_2 © NXP B.V. 2008. All rights reserved.
User manual Rev. 02 — 19 December 2008 343 o f 792
NXP Semiconductors UM10237
Chapter 13: LPC24XX USB device controller
9.4.2 USB Endpoint Interrupt Enable register (USBEpIntEn - 0xFFE0 C234)

Setting a bit to 1 in this register causes the corresponding bit in USBEpIntSt to be set

when an interrupt occurs for the associated endpoint. Setting a bit to 0 causes the

corresponding bit in USBDMARSt to be set when an interrupt occurs for the associated

endpoint. USBEpIntEn is a read/write register.

Table 308. USB Endpoint Interrupt Status register (USBEpIntSt - address 0xFFE0 C230) bit description
Bit Symbol Description Reset value
0 EP0RX Endpoint 0, Data Received Interrupt bit. 0
1 EP0TX Endpoint 0, Data Transmitted Interrupt bit or sent a NAK. 0
2 EP1RX Endpoint 1, Data Received Interrupt bit. 0
3 EP1TX Endpoint 1, Data Transmitted Interrupt bit or sent a NAK. 0
4 EP2RX Endpoint 2, Data Received Interrupt bit. 0
5 EP2TX Endpoint 2, Data Transmitted Interrupt bit or sent a NAK. 0
6 EP3RX Endpoint 3, Isochronous endpoint. NA
7 EP3TX Endpoint 3, Isochronous endpoint. NA
8 EP4RX Endpoint 4, Data Received Interrupt bit. 0
9 EP4TX Endpoint 4, Data Transmitted Interrupt bit or sent a NAK. 0
10 EP5RX Endpoint 5, Data Received Interrupt bit. 0
11 EP5TX Endpoint 5, Data Transmitted Interrupt bit or sent a NAK. 0
12 EP6RX Endpoint 6, Isochronous endpoint. NA
13 EP6TX Endpoint 6, Isochrono us endpoint. NA
14 EP7RX Endpoint 7, Data Received Interrupt bit. 0
15 EP7TX Endpoint 7, Data Transmitted Interrupt bit or sent a NAK. 0
16 EP8RX Endpoint 8, Data Received Interrupt bit. 0
17 EP8TX Endpoint 8, Data Transmitted Interrupt bit or sent a NAK. 0
18 EP9RX Endpoint 9, Isochronous endpoint. NA
19 EP9TX Endpoint 9, Isochrono us endpoint. NA
20 EP10RX Endpoint 10, Data Received Interrupt bit . 0
21 EP10TX Endpoint 10, Data Transmitted Interrupt bit or sent a NAK. 0
22 EP11RX Endpoint 11, Data Received Interrupt bit. 0
23 EP11TX Endpoint 11, Data Transmitted Interrupt bit or sent a NAK. 0
24 EP12RX Endpoint 12, Isochronous endpoint. NA
25 EP12TX Endpoint 12, Isochronous endpoint. NA
26 EP13RX Endpoint 13, Data Received Interrupt bit . 0
27 EP13TX Endpoint 13, Data Transmitted Interrupt bit or sent a NAK. 0
28 EP14RX Endpoint 14, Data Received Interrupt bit . 0
29 EP14TX Endpoint 14, Data Transmitted Interrupt bit or sent a NAK. 0
30 EP15RX Endpoint 15, Data Received Interrupt bit . 0
31 EP15TX Endpoint 15, Data Transmitted Interrupt bit or sent a NAK. 0