Intel E3815 FH8065301567411 Data Sheet
Product codes
FH8065301567411
Intel
®
Atom™ Processor E3800 Product Family
Datasheet
715
Default: 00000000h
31
28
24
20
16
12
8
4
0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
PWM
_
ENA
B
LE
RE
SE
RVED
RESE
RVED
_1
B
A
CKLIGHT_POL
A
RITY
RESE
RVED
_2
PH
A
S
E
_
IN
_
IN
T
E
R
R
U
PT
_
S
TA
TU
S
PH
A
S
E
_
IN
_
E
N
A
BL
E
P
H
ASE_IN_INTE
RRU
PT_E
NABLE
PH
ASE_IN_
T
IM
E_BASE
PH
ASE
_IN_C
O
U
N
T
PH
A
S
E
_
IN
_
IN
C
R
E
M
E
N
T
Bit
Range
Default &
Access
Field Name (ID): Description
31
0b
RW
PWM_ENABLE:
This bit enables the PWM counter logic
0 = PWM disabled (drives 0 always)
1 = PWM enabled
30
0b
RW
RESERVED:
MBZ
29
0b
RW
RESERVED_1:
Reserved.
28
0b
RW
BACKLIGHT_POLARITY:
This field controls the polarity of the PWM signal.
0 = Active High
1 = Active Low
27
0b
RW
RESERVED_2:
MBZ
26
0b
RW/1C
PHASE_IN_INTERRUPT_STATUS:
This bit will be set by hardware when a Phase-In
interrupt has occurred. Software will clear this bit by writing a 1 , which will reset the
interrupt generation.
[DevCL-A,B] Reserved
AccessType: One to Clear
25
0b
RW
PHASE_IN_ENABLE:
Setting this bit enables a PWM phase in based on the
programming of the Phase In registers below. This bit clears itself when the phase in is
completed.
24
0b
RW
PHASE_IN_INTERRUPT_ENABLE:
Setting this bit enables an interrupt to be
generated when the PWM phase in is completed.
23:16
0b
RW
PHASE_IN_TIME_BASE:
This field determines the number of VBLANK events that
pass before one increment occurs.
0 = invalid
1 = 1 vblank
2 = 2 vblanks
etc.
15:8
0b
RW
PHASE_IN_COUNT:
This field determines the number of increment events in this
phase in. Writes to this register should only occur when hardware-phase-ins are
disabled. Reads to this register can occur any time, where the value in this field
indicates the number of increment events remaining to fully apply a phase-in request as
hardware automatically decrements this value. A value of 0 is invalid.
In order to write the same value to this field for the second time, one must write a
dummy value to this field, for example, 0 , before writing the real value for the second
time.
7:0
0b
RW
PHASE_IN_INCREMENT:
This field indicates the amount to adjust the PWM duty cycle
register on each increment event.
This is a two s complement number.