NXP Semiconductors /LPC408x_7x /TIMER0 /CTCR

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Interpret as CTCR

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (TIMER_MODE_EVERY_RI)CTMODE 0 (CAPN_0_FOR_TIMERN)CINSEL 0RESERVED

CINSEL=CAPN_0_FOR_TIMERN, CTMODE=TIMER_MODE_EVERY_RI

Description

Count Control Register. The CTCR selects between Timer and Counter mode, and in Counter mode selects the signal and edge(s) for counting.

Fields

CTMODE

Counter/Timer Mode This field selects which rising PCLK edges can increment Timer’s Prescale Counter (PC), or clear PC and increment Timer Counter (TC). Timer Mode: the TC is incremented when the Prescale Counter matches the Prescale Register.

0 (TIMER_MODE_EVERY_RI): Timer Mode: every rising PCLK edge

1 (RISING): Counter Mode: TC is incremented on rising edges on the CAP input selected by bits 3:2.

2 (FALLING): Counter Mode: TC is incremented on falling edges on the CAP input selected by bits 3:2.

3 (DUALEDGE): Counter Mode: TC is incremented on both edges on the CAP input selected by bits 3:2.

CINSEL

Count Input Select When bits 1:0 in this register are not 00, these bits select which CAP pin is sampled for clocking. Note: If Counter mode is selected for a particular CAPn input in the TnCTCR, the 3 bits for that input in the Capture Control Register (TnCCR) must be programmed as 000. However, capture and/or interrupt can be selected for the other 3 CAPn inputs in the same timer.

0 (CAPN_0_FOR_TIMERN): CAPn.0 for TIMERn

1 (CAPN_1_FOR_TIMERN): CAPn.1 for TIMERn

2 (RESERVED): Reserved

3 (RESERVED): Reserved

RESERVED

Reserved. Read value is undefined, only zero should be written.

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