參數(shù)資料
型號(hào)： DS3994
廠商： Maxim Integrated Products, Inc.
英文描述： 4-Channel Cold-Cathode Fluorescent Lamp Controller
中文描述： 4通道冷陰極熒光燈控制器
文件頁(yè)數(shù)： 20/28頁(yè)
文件大?。?/td> 557K
代理商： DS3994
D
4-Channel Cold-Cathode
Fluorescent Lamp Controller
20
____________________________________________________________________
F4h: Control Register 1 (CR1)
BIT
NAME
FUNCTION
0
LOC
Lamp Overcurrent
0 = Lamp overcurrent detection disabled.
1 = Lamp overcurrent detection enabled.
1
POSCS
POSC Select. See POSCR0 and POSCR1 bits in Control Register 2 to select the oscillator range.
0 = Connect POSC to ground with a resistor to set the dimming frequency.
1 = Connect POSC to an external 22.5Hz to 440Hz dimming clock to set the dimming frequency.
2
LFSS
Lamp Frequency Source Select
0 = Lamp frequency source mode. The lamp frequency is generated internally and sourced at the LSYNC
output for use by lamp frequency receivers.
1 = Lamp frequency receiver mode. The lamp frequency must be provided at the LSYNC input.
3
DPSS
DPWM Signal Source Select
0 = D P W M sour ce m od e. D P WM si g nal i s g ener ated i nter nal y, and can b e outp ut at P S Y N C p n ( see RGS O b )
1 = DPWM receiver mode. DPWM signal is generated externally and supplied at the PSYNC input.
4
RGSO
Ramp Generator Source Option
0 = Sources DPWM at the PSYNC output.
1 = Sources the internal ramp generator at PSYNC output.
5
ARD
Autoretry Disable
0 = Autoretry function enabled.
1 = Autoretry function disabled.
6
FRS
Fault Response Select
0 = Disable only the malfunctioning channel.
1 = Disable all channels upon fault detection at any channel.
7
DPD
DPWM Disable
0 = DPWM function enabled.
1 = DPWM function disabled. DPWM set to 100% duty cycle.
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