Fujitsu MB91191 Manual Do Utilizador

Página de 348
206
CHAPTER 11  12-bit PWM
11.2
Register of 12-bit PWM 
Register configuration/functions of 12-bit PWM is shown. 
PWMx Control Register (PWMxC)
Figure 11.2-1  PWMx Control Register (PWMxC) 
[bit7]:Test
[bit6 to 4]: 
It is an unused bit.
[bit3]:STR
It is PWM operation enable bit. 
[bit2]:CKS
It is clock select bit. 
[bit1]:LFLG
It is load request flag to compare latch. 
[bit0]:LREQ
It is load request bit. 
The read value of this bit is always "0". 
7 6 5 4 3 2 1 0 
0--- 00X0
B
Initial value
bit
R/W
R/W
R/W
R
W
Test
STR
CKS
LFLG
LREQ
Access
Please set "0". 
0 Operation 
disabled
1 Operation 
enabled
1/fch (fch: 50 ns in @20 MHz) 
2/fch (fch: 100 ns in @20 MHz) 
No load request and complete load.
1 Load 
request
0 None
Load data register value to compare latch.