233
•
Bit 1 (Timer Synchro 1 (SYNC1)): SYNC1 selects synchronizing mode for channel 1.
Bit 1: SYNC1
Description
0
The timer counter for channel 1 (TCNT1) operates independently
(Preset/clear of TCNT1 is independent of other channels) (Initial value)
1
Channel 1 operates synchronously. Synchronized preset/clear of
TNCT1 enabled.
•
Bit 0 (Timer Synchro 0 (SYNC0)): SYNC0 selects synchronizing mode for channel 0.
Bit 0: SYNC0
Description
0
The timer counter for channel 0 (TCNT0) operates independently
(Preset/clear of TCNT0 is independent of other channels)
(Initial value)
1
Channel 0 operates synchronously. Synchronized preset/clear of
TNCT0 enabled.
10.2.3
Timer Mode Register (TMDR)
The timer mode register (TMDR) is an eight-bit read/write register that selects PWM mode for
channels 0–4, sets phase counting mode for channel 2, and sets the conditions for the overflow
flag (OVF). TMDR is initialized to H'80 or H'00 by a reset and in standby mode.
Bit:
7
6
5
4
3
2
1
0
Bit name:
—
MDF
FDIR
PWM4
PWM3
PWM2
PWM1
PWM0
Initial value:
*
0
0
0
0
0
0
0
R/W:
—
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note:
*
Undefined
•
Bit 7 (Reserved): Bit 7 is read as undefined. The write value should be 0 or 1.
•
Bit 6 (Phase Counting Mode (MDF)): MDF selects phase counting mode for channel 2.
Bit 6: MDF
Description
0
Channel 2 operates normally
(Initial value)
1
Channel 2 operates in phase counting mode
Содержание HD6417032
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Страница 525: ...490 CK RAS CAS TRp TRc TRcc tRASD1 tRASD2 tCASD3 tCASD2 TRr tCSR Figure 20 18 Self Refresh ...
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