R26 datasheet(220/487 Pages) RENESAS

220 / 487 page

R8C/26 Group, R8C/27 Group

14. Timers

Rev.2.10

Sep 26, 2008

Page 201 of 453

REJ09B0278-0210

Figure 14.43

TRCIOR0 Register for Input Capture Function

Timer RC I/O Control Register 0

Symbol

Address

After Reset

TRCIOR0

0124h

10001000b

Bit Symbol

Bit Name

Function

NOTES:

TRCGRA mode select bit(1)

Set to 1 (input capture) in the input capture

function.

TRCGRA input capture input

sw itch bit(3)

0 : fOCO128 signal

1 : TRCIOA pin input

IOA1

IOA0

TRCGRA control bits

b1 b0

0 0 : Input capture to the TRCGRA register

at the rising edge

0 1 : Input capture to the TRCGRA register

at the falling edge

1 0 : Input capture to the TRCGRA register

at both edges

1 1 : Do not set.

b7 b6 b5 b4

b3 b2

IOA3

b1 b0

IOA2

—

(b7)

IOB2

TRCGRB control bits

b5 b4

0 0 : Input capture to the TRCGRB register

at the rising edge

0 1 : Input capture to the TRCGRB register

at the falling edge

1 0 : Input capture to the TRCGRB register

at both edges

1 1 : Do not set.

The IOA3 bit is enabled w hen the IOA2 bit is set to 1 (input capture function).

When the BFD bit in the TRCMR register is set to 1 (buffer register of TRCGRB register), set the IOD2 bit in the

TRCIOR1 register to the same value as the IOB2 bit in the TRCIOR0 register.

—

IOB0

IOB1

Nothing is assigned. If necessary, set to 0.

When read, the content is 1.

When the BFC bit in the TRCMR register is set to 1 (buffer register of TRCGRA register), set the IOC2 bit in the

TRCIOR1 register to the same value as the IOA2 bit in the TRCIOR0 register.

TRCGRB mode select bit(2)

Set to 1 (input capture) in the input capture

function.

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