12 gpt flag register 1 (gptflg1), 13 gpt flag register 2 (gptflg2) – Motorola ColdFire MCF5281 User Manual
Page 380

General Purpose Timer Modules (GPTA and GPTB)
20-12
Freescale Semiconductor
20.5.12 GPT Flag Register 1 (GPTFLG1)
20.5.13 GPT Flag Register 2 (GPTFLG2)
2–0
PRn
Prescaler bits. Select the prescaler divisor for the GPT counter.
000 Prescaler divisor 1
001 Prescaler divisor 2
010 Prescaler divisor 4
011 Prescaler divisor 8
100 Prescaler divisor 16
101 Prescaler divisor 32
110 Prescaler divisor 64
111 Prescaler divisor 128
Note: The newly selected prescaled clock does not take effect until the next
synchronized edge of the prescaled clock when the clock count transitions to 0x0000.)
7
6
5
4
3
0
Field
—
CF
Reset
0000_0000
R/W
R/W
Address
IPSBAR + 0x1A_000E, 0x1B_000E
Figure 20-14. GPT Flag Register 1 (GPTFLG1)
Table 20-15. GPTFLG1 Field Descriptions
Bit(s)
Name
Description
7–4
—
Reserved, should be cleared.
3–0
CnF
Channel flags. A channel flag is set when an input capture or output compare event
occurs. These bits are read anytime, write anytime (writing 1 clears the flag, writing 0
has no effect).
Note: When the fast flag clear all bit, GPTSCR1[TFFCA], is set, an input capture read
or an output compare write clears the corresponding channel flag. When a channel
flag is set, it does not inhibit subsequent output compares or input captures.
7
6
5
4
3
0
Field
TOF
—
Reset
0000_0000
R/W
R/W
Address
IPSBAR + 0x1A_000F, 0x1B_000F
Figure 20-15. GPT Flag Register 2 (GPTFLG2)
Table 20-14. GPTSCR2 Field Descriptions (continued)
Bit(s)
Name
Description
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3