DS3881E Maxim Integrated Products, DS3881E Datasheet - Page 20

• Manufacturer Part Number: DS3881E
• Description: Single-channel Automotive CCFL Controller
• Manufacturer: Maxim Integrated Products

Table 5. Control Register 1 (CR1) [Shadowed-EEPROM, F4h]
Single-Channel Automotive CCFL Controller
20
BIT
0
1
2
3
4
5
6
7
____________________________________________________________________
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FACTORY
DEFAULT
0
0
0
0
0
0
0
0
POSCS
NAME
RGSO
LOCE
DPSS
RSVD
LFSS
ARD
DPD
Lamp Overcurrent Enable
0 = Lamp overcurrent detection disabled.
1 = Lamp overcurrent detection enabled.
POSC Select. See POSCR0 and POSCR1 control bits in Control Register 2 to select
the oscillator range.
0 = POSC input is connected with a resistor to ground to set the frequency of the
internal PWM oscillator.
1 = POSC input is a 22.5Hz to 440Hz clock.
Lamp Frequency Source Select
0 = Lamp frequency generated internally and sourced from the LSYNC output.
1 = Lamp frequency generated externally and supplied to the LSYNC input.
DPWM Signal Source Select
0 = DPWM signal generated internally and sourced from the PSYNC output.
1 = DPWM signal generated externally and supplied to the PSYNC input.
Ramp Generator Source Option
0 = Source DPWM at the PSYNC output.
1 = Source internal ramp generator at the PSYNC output.
Autoretry Disable
0 = Autoretry function enabled.
1 = Autoretry function disabled.
Reserved. Should be set to 0.
DPWM Disable
0 = DPWM function enabled.
1 = DPWM function disabled.
FUNCTION