Memory Map and Registers

 

 

Table 20-11. GPTCL1 Field Descriptions

 

 

 

 

 

Bit(s)

Name

 

 

Description

 

 

 

 

7–0

OMx/OLx

 

Output mode/output level. Selects the output action to be taken as a result of a

 

 

 

successful output compare on each channel. When either OMn or OLn is set and the

 

 

 

IOSn bit is set, the pin is an output regardless of the state of the corresponding DDR

 

 

 

bit. These bits are read anytime, write anytime.

 

 

 

00

GPT disconnected from output pin logic

 

 

 

01

Toggle OCn output line

 

 

 

10

Clear OCn output line

 

 

 

11 Set OCn line

 

 

 

Note: Channel 3 shares a pin with the pulse accumulator input pin. To use the PAI

 

 

 

input, clear both the OM3 and OL3 bits and clear the OC3M3 bit in the output compare

 

 

 

3 mask register.

 

 

 

 

 

20.5.9 GPT Control Register 2 (GPTCTL2)

Field

Reset

R/W

Address

7

6

5

4

3

2

1

0

EDG3B

EDG3A

EDG2B

EDG2A

EDG1B

EDG1A

EDG0B

EDG0A

 

 

 

 

 

 

 

 

0000_0000

R/W

IPSBAR + 0x1A_000B, 0x1B_000B

Figure 20-11. GPT Control Register 2 (GPTCTL2)

Table 20-12. GPTLCTL2 Field Descriptions

Bit(s)

Name

 

Description

 

 

 

7–0

EDGn[B:A]

Input capture edge control. Configures the input capture edge detector circuits for each

 

 

channel. These bits are read anytime, write anytime.

 

 

00

Input capture disabled

 

 

01

Input capture on rising edges only

 

 

10

Input capture on falling edges only

 

 

11

Input capture on any edge (rising or falling)

 

 

 

 

20.5.10 GPT Interrupt Enable Register (GPTIE)

Field

Reset

R/W

Address

7

6

5

4

3

0

 

 

 

 

CI

 

 

 

 

 

 

0000_0000

R/W

IPSBAR + 0x1A_000C, 0x1B_000C

Figure 20-12. GPT Interrupt Enable Register (GPTIE)

20-10

MCF5282 User’s Manual

MOTOROLA

Page 432
Image 432
Motorola MCF5282, MCF5281 GPT Control Register 2 GPTCTL2, GPT Interrupt Enable Register Gptie, GPTCL1 Field Descriptions