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UM10503
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User manual
Rev. 2.1 — 10 December 2015
994 of 1441
NXP Semiconductors
UM10503
Chapter 31: LPC43xx/LPC43Sxx State Configurable Timer (SCT) with
31.3.4 SCT halt condition register
If UNIFY = 1 in the CONFIG register, only the _L bits are used.
If UNIFY = 0 in the CONFIG register, this register can be written to as two registers
HALT_L and HALT_H. Both the L and H registers can be read or written individually or in a
single 32-bit read or write operation.
Remark:
Any event halting the counter disables its operation until software clears the
HALT bit (or bits) in the CTRL register (
).
31.3.5 SCT stop condition register
If UNIFY = 1 in the CONFIG register, only the _L bits are used.
If UNIFY = 0 in the CONFIG register, this register can be written to as two registers
STOP_L and STOP_H. Both the L and H registers can be read or written individually or in
a single 32-bit read or write operation.
31.3.6 SCT start condition register
If UNIFY = 1 in the CONFIG register, only the _L bits are used.
If UNIFY = 0 in the CONFIG register, this register can be written to as two registers
START_L and START_H. Both the L and H registers can be read or written individually or
in a single 32-bit read or write operation.
Table 749. SCT limit register (LIMIT, address 0x4000 0008) bit description
Bit
Symbol
Description
Reset
value
15:0
LIMMSK_L
If bit n is one, event n is used as a counter limit event for the
L or unified counter (event 0 = bit 0, event 1 = bit 1, event
15 = bit 15).
0
31:16
LIMMSK_H
If bit n is one, event n is used as a counter limit event for the
H counter (event 0 = bit 16, event 1 = bit 17, event 15 = bit
31).
0
Table 750. SCT halt condition register (HALT, address 0x4000 000C) bit description
Bit
Symbol
Description
Reset
value
15:0
HALTMSK_L
If bit n is one, event n sets the HALT_L bit in the CTRL register
(event 0 = bit 0, event 1 = bit 1, event 15 = bit 15).
0
31:16
HALTMSK_H
If bit n is one, event n sets the HALT_H bit in the CTRL register
(event 0 = bit 16, event 1 = bit 17, event 15 = bit 31).
0
Table 751. SCT stop condition register (STOP, address 0x4000 0010) bit description
Bit
Symbol
Description
Reset
value
15:0
STOPMSK_L
If bit n is one, event n sets the STOP_L bit in the CTRL register
(event 0 = bit 0, event 1 = bit 1, event 15 = bit 15).
0
31:16 STOPMSK_H
If bit n is one, event n sets the STOP_H bit in the CTRL register
(event 0 = bit 16, event 1 = bit 17, event 15 = bit 31).
0