Intel E3815 FH8065301567411 Data Sheet

Product codes
FH8065301567411
Page of 5308
 
Intel
®
 Atom™ Processor E3800 Product Family
Datasheet
705
14.11.50 PIPEA_BLM_HIST_CTL—Offset 61260h
PipeA Image Enhancement Histogram Control Register
Access Method
Default: 00000000h
Bit 
Range
Default & 
Access
Field Name (ID): Description
31:16
0b
RW
BACKLIGHT_MODULATION_FREQUENCY: 
This field determines the number of time 
base events in total for a complete cycle of modulated backlight control. This field is 
normally set once during initialization based on the frequency of the clock that is being 
used and the desired PWM frequency. This value represents the period of the PWM 
stream in display core clocks ([DevCTG] 100MHz HRAW clocks) multiplied by 128 or 
25MHz S0IX clocks multipled by 16.
15:0
0b
RW
BACKLIGHT_DUTY_CYCLE: 
This field determines the number of time base events for 
the active portion of the PWM backlight control. This should never be larger than the 
frequency field. A value of zero will turn the backlight off. A value equal to the backlight 
modulation frequency field will be full on. This field gets updated when it is desired to 
change the intensity of the backlight, it will take affect at the end of the current PWM 
cycle. This value represents the active time of the PWM stream in display core clock 
([DevCTG] HRAW clock) periods multiplied by 128 or 25MHz S0IX clocks multipled by 
16.
Type: 
Memory Mapped I/O Register
(Size: 32 bits)
Offset: 
GTTMMADR_LSB Type: 
PCI Configuration Register (Size: 32 
bits)
GTTMMADR_LSB Reference: 
[B:0, D:2, F:0] + 10h
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
IMAG
E_ENH
A
NC
EMENT_H
IST
OG
RA
M
_
E
N
ABLED
IM
AG
E_
E
N
H
A
NC
EM
ENT
_
M
O
D
IF
ICA
T
ION
_
TAB
LE
_
E
NA
B
LE
D
R
E
S
E
R
V
ED
_MB
Z
_IMA
GE
_E
NHA
N
CE
ME
NT
_PIPE
_
ASSIG
N
MEN
T
RESE
RVED
HI
S
TOG
RAM
_
M
O
DE
_SELE
C
T
SYNC
_T
O_P
H
AS
E_IN_CO
U
NT
RES
E
RVE
D
_1
ENHA
NCE
M
ENT_MODE
SYNC_T
O_PHASE_IN
BIN_REGIST
ER_FUN
CTION_SELEC
T
RES
E
RVE
D
_2
BIN_
REGISTER_
IND
EX_READ_ONL
Y