M16CSLASH29 datasheet(169/499 Pages) RENESAS

169 / 499 page

13. Timer S

page 145

Figure 13.5 G1TMCR0 to G1TMCR7 Registers, and G1TPR6 to G1TPR7 Registers

Time Measurement Control Register j (j=0 to 7)

Symbol

G1TMCR0 to G1TMCR3

G1TMCR4 to G1TMCR7

Address

031816, 031916, 031A16, 031B16

031C16, 031D16, 031E16, 031F16

After Reset

0016

Bit Name

Function

Bit

Symbol

CTS0

CTS1

DF0

Time measurement

trigger select bit

DF1

Gate function

select bit (2)

GOC

GSC

Digital filter function

select bit

Gate function clear

select bit (2, 3, 4)

0: Gate function is not used

1: Gate function is used

Gate function clear

bit (2, 3)

Prescaler function

select bit (2)

: No time measurement

: Rising edge

: Falling edge

: Both edges

: No digital filter

: Do not set to this value

: fBT1

: f1 or f2 (1)

0: Not cleared

1: The gate is cleared when the base

timer matches the G1POk register

The gate is cleared by setting the

GSC bit to 1

0: Not used

1: Used

NOTES:

1. When the PCLK0 bit in the PCLKR register is set to 0, the count source is f2 cycles. And when the

PCLK0 bit is set to 1, the count source is f1 cycles.

2. These bits are in registers G1TMCR6 and G1TMCR7. Set all bits 4 to 7 in registers G1TMCR0 to

G1TMCR5 to 0.

3. These bits are enabled when the GT bit is set to 1.

4. The GOC bit is set to 0 after the gate function is cleared. See Figure 13.7 for details on the G1POk

b7 b6 b5 b4 b3 b2 b1 b0

Time Measurement Prescale Register j (j=6,7)

(1)

Symbol

Address

After Reset

G1TPR6 to G1TPR7 032416, 032516

0016

Function

Setting Range

As the setting value is n, time is measured when-

ever a trigger input is counted by n+1 (2)

0016 to FF16

NOTES:

1. The G1TPR6 to G1TPR7 registers reflect the base timer value, synchronizing with the count source

fBT1 cycles.

2. The first prescaler, after the PR bit in the G1TMCRj register is changed from 0 (not used) to 1

(used), may be divided by n, rather than n+1. The subsequent prescaler is divided by n+1.

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