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User manual Rev. 3 — 19 December 2013  531 of 841
NXP Semiconductors
UM10360
Chapter 25: LPC176x/5x Motor control PWM
25.7.3.2 MCPWM Interrupt Enable set address (MCINTEN_SET - 0x400B 8054) 
Writing ones to this write-only address sets the corresponding bits in MCINTEN, thus 
enabling interrupts. 
 
25.7.3.3 MCPWM Interrupt Enable clear address (MCINTEN_CLR - 0x400B 8058) 
Writing ones to this write-only address clears the corresponding bits in MCINTEN, thus 
disabling interrupts. 
 
25.7.3.4 MCPWM Interrupt Flags read address (MCINTF - 0x400B 8068) 
The MCINTF register includes all MCPWM interrupt flags, which are set when the 
corresponding hardware event occurs, or when ones are written to the MCINTF_SET 
address. When corresponding bits in this register and MCINTEN are both 1, the MCPWM 
asserts its interrupt request to the Interrupt Controller module. This address is read-only, 
but the bits in the underlying register can be modified by writing ones to addresses 
MCINTF_SET and MCINTF_CLR.
 
25.7.3.5 MCPWM Interrupt Flags set address (MCINTF_SET - 0x400B 806C) 
Writing one(s) to this write-only address sets the corresponding bit(s) in MCINTF, thus 
possibly simulating hardware interrupt(s). 
 
25.7.3.6 MCPWM Interrupt Flags clear address (MCINTF_CLR - 0x400B 8070) 
Writing one(s) to this write-only address sets the corresponding bit(s) in MCINTF, thus 
clearing the corresponding interrupt request(s). This is typically done in interrupt service 
routines.
Table 464. PWM interrupt enable set register (MCINTEN_SET - address 0x400B 8054) bit 
description
Bit Description
31:0 Writing ones to this address sets the corresponding bits in MCINTEN, thus enabling 
interrupts. See Table 462
.
Table 465. PWM interrupt enable clear register (MCINTEN_CLR - address 0x400B 8058) bit 
description
Bit Description
31:0 Writing ones to this address clears the corresponding bits in MCINTEN, thus disabling 
interrupts. See Table 462
. 
Table 466. MCPWM Interrupt Flags read address (MCINTF - 0x400B 8068) bit description
Bit Value Description Reset 
value
31:0 See Table 462 for the bit allocation.  0
1 If the corresponding bit in MCINTEN is 1, the MCPWM module is asserting its interrupt request to 
the Interrupt Controller.
0 This interrupt source is not contributing to the MCPWM interrupt request.
Table 467. MCPWM Interrupt Flags set address (PWMINTF_SET - 0x400B 806C) bit 
description
Bit Description
31:0 Writing one(s) to this write-only address sets the corresponding bit(s) in the MCINTF 
register, thus possibly simulating hardware interrupt(s). See Table 462
.