M32C83T datasheet(281/527 Pages) RENESAS

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Page 258

21. Intelligent I/O

)

(

Group i Time Measurement Control Register j (i=0,1; j=0 to 7)(1)

Symbol

G0TMCR0 to G0TMCR3

G0TMCR4 to G0TMCR7

G1TMCR0 to G1TMCR3

G1TMCR4 to G1TMCR7

Address

00D816, 00D916, 00DA16, 00DB16

00DC16, 00DD16, 00DE16, 00DF16

011816, 011916, 011A16, 011B16

011C16, 011D16, 011E16, 011F16

After Reset

0016

Bit Name

Function

Bit

Symbol

CTS0

CTS1

DF0

Time Measurement

Trigger Select Bit

DF1

Gate Function

Select Bit(2, 4)

GOC

GSC

Digital Filter Function

Select Bit

Gate Function Clear

Select Bit(2, 3, 5)

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

: fBTi

: f1

0 : Not cleared

1 : The gate is cleared when the base

timer matches the GiPOk register

The gate is cleared by setting the

GSC bit to "1"

0 : Not used

1 : Used

NOTES:

1. If the CAS bit in the GiBCR1 register is set to "0" (16-bit time measurement function), the G1TMCR0

and G1TMCR3 to G1TMCR5 registers cannot be used. When write, set these registers to "0016".

If the CAS bit is set to "1" (32-bit time measurement function), set the same values in the G0TMCRj

and G1TMCRj registers.

2. These bits are in the GiTMCR6 and GiTMCR7 registers.

Set all bits 4 to 7 in the GiTMCR0 to GiTMCR5 registers to "0".

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

4. If the CAS bit in the GiBCR1 register is set to "1" (32-bit time measurement function), set the GT bit

to "0". The gate function cannot be used.

5. The GOC bit is set to "0" after the gate function is cleared. See Figure 18.13 for details on the

GiPOk register (k=4 when j=6; k=5 when j=7).

Group i Time Measurement Prescale Register j (i=0,1; j=6,7)

Symbol

Address

After Reset

G0TPR6 to G0TPR7

00E416, 00E516

0016

G1TPR6 to G1TPR7

012416, 012516

0016

Function

Setting Range

If the setting value is n, the value of the base timer

is stored into GiTMj register whenever a trigger

input is counted by n+1(1)

0016 to FF16

NOTES:

1. The first prescaler, after the PR bit in the GiTMCRj register is changed from "0" (prescaler function

used) to "1" (prescaler function not used), may be divided by n rather than n+1. The subsequent

prescaler is divided by n+1.

Figure 21.10 G0TMCR0 to G0TMCR7, G1TMCR0 to G1TMCR7, G0TPR6, G0TPR7, G1TPR6, and

G1TPR7 Registers

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