Overview Of The Input Capture Module - Fujitsu FR60 Hardware Manual

CHAPTER 14 UART, SERIAL I/O INTERFACE (SIO), INPUT CAPTURE MODULE, AND OUTPUT COMPARE
14.3.1

Overview of the Input Capture Module

The input capture module consists of an input capture data register and an input
capture control register.
■ External Input Pin Corresponding to Each Input Capture Channel
An external input pin is assigned to each input capture channel.
• The valid edge of the external input signal can be selected from the following three types:
• Rising edge
• Falling edge
• Both rising and falling edges
• An interrupt can be generated when a valid edge of an external input signal is detected.
The MB91350A has four input capture channels.
■ Input Capture Module Registers
The input capture module registers are shown below.
15 14
CP15 CP14
7 6
CP07 CP06
7 6
ICP3 ICP2
7 6
ICP1 ICP1
426
13 12 11
CP13 CP12 CP11 CP10
5 4 3
CP05 CP04 CP03 CP02
5 4 3
ICE3 ICE2 EG31 EG30
5 4 3
ICE1 ICE0 EG11 EG10
10 9 8
Input capture data register
(IPCP) (high-order bits)
CP09 CP08
2 1 0 Input capture data register
(IPCP) (low-order bits)
CP01 CP00
2 1 0
Input capture control register
(ICS23)
EG21 EG20
2 1 0
Input capture control register
(ICS01)
EG01 EG00