Fujitsu MB90420/5 (A) Series, Руководство по оборудованию

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MB90420/5 (A) SERIES F
2
MC-16LX FAMILY 16-BIT MICROCONTROLLERS HARDWARE MANUAL
13-6
13.3.2 Detailed Explanation of Registers for PPG Timer
The PPG timer has following four registers:
•
PPG control status register (PCNT0 to PCNT2)
•
PPG decrement counter register (PDCR0 to PDCR2)
•
PPG cycle setting register (PCSR0 to PCSR2)
•
PPG duty setting register (PDUT0 to PDUT2)
n
PPG control status register (PCNT)
[bit 15] CNTE: Timer enable bit
This bit enables operation of the 16-bit decrement counter.
0 Stops (initial value)
1 Enables
[bit 14] STGR: Software trigger bit
When 1 is written to this bit, the software trigger is caused.
0 is always read from the STGR bit.
[bit 13] MDSE: Mode select bit
This bit selects the PWM operation that issues a pulse continuously or the one-shot operation that issues
a single pulse. It cannot be rewritten during operation.
0 PWM operation (initial value)
1 One-shot operation
[bit 12] RTRG: Restart enable bit
This bit enables restart by the software trigger. It cannot be rewritten during operation.
0 Disables restart (initial value)
1 Enables restart
CNTE STGR MDSE RTRG CKS1 CKS0 PGMS ––
bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8
(R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (–)
(0) (0) (0) (0) (0) (0) (0) (–)
PPG control status register
(upper)
EGS1 EGS0 IREN IRQF IRS1 IRS0 POEN OSEL
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
(R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W)
(0) (0) (0) (0) (0) (0) (0) (0)
Read/write
Initial value
PCNTH0 to 2
Address: ch0 00002B
H
Address: ch1 00002D
H
Address: ch2 00002F
H
Address: ch0 00002A
H
Address: ch1 00002C
H
Address: ch2 00002E
H
Read/write
Initial value
PCNTL0 to 2
PPG Control status register
(lower)