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User manual Rev. 3 — 19 December 2013 228 of 841
NXP Semiconductors
UM10360
Chapter 11: LPC176x/5x USB device controller
11.10.3.2 USB Endpoint Interrupt Enable register (USBEpIntEn - 0x5000 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 202. USB Endpoint Interrupt Status register (USBEpIntSt - address 0x5000 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, Isochronous 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, Isochronous 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
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