Ppg Control Status Register (Pcntl0 To Pcntl2, Pcnth0 To Pcnth2) - Fujitsu MB90460 Series Hardware Manual

13.4.4 PPG Control Status Register (PCNTL0 to PCNTL2,
PCNTH0 to PCNTH2)
PPG control status register is used to set operating conditions for 16-bit PPG timer
enable or disable operation, software trigger, retrigger control interrupt, output polarity
and check the status
■ PPG Control Status Register, Upper Byte (PCNTH0 to PCNTH2)
Figure 13.4-5 PPG0 to PPG2 Control Register (PCNTH0 to PCNTH2)
Address bit 15
ch.0 : 00003F CNTE
H
ch.1: 000047
H
R/W
ch.2 : 00004F
H
R/W : Read and Write
: Initial value
14 13 12 11
STGR MDSE RTRG CKS2
R/W R/W R/W R/W
10 9 8 Initial value
CKS1 CKS0 PGMS 00000000
R/W R/W R/W
PGMS PPG output mask enable bit
0 PPG output masking disabled
1 PPG output masking enabled
CKS2 CKS1 CKS0 Counter clock selection bits
φ (62.5 ns, φ = 16 MHz)
0 0 0
φ/2 (125 ns, φ = 16 MHz)
0 0 1
φ/4 (250 ns, φ = 16 MHz)
0 1 0
φ/8 (500 ns, φ = 16 MHz)
0 1 1
φ/16 (1 µs, φ = 16 MHz)
1 0 0
φ/32 (2 µs, φ = 16 MHz)
1 0 1
φ/64 (4 µs, φ = 16 MHz)
1 1 0
φ/128 (8 µs, φ = 16 MHz)
1 1 1
φ: Machine clock
RTRG Retrigger enable bit
0 Retriggering disabled
1 Retriggering enabled
MDSE Mode selection bit
0
1 Single-shot mode
Software trigger bit
STGR
write
0 No software trigger
1 Trigger the PPG by software
CNTE Timer enable bit
0 Stop the PPG timer
1 Enable the PPG timer
CHAPTER 13 16-BIT PPG TIMER
B
PWM mode
read
Always read "0"
267