Datasheet

29
MSL2021 [DATASHEET]
42062A–LED–02/2013
13.5 Fault Status register (FAULTSTAT, 0x23), Read Only
Reports the fault status for the color-adjust string. When a fault is reported in this register, the fault output FLTB pulls low.
Toggle EN low, then high to clear the faults. Faults recur if the fault persists.
Table 13-5. Fault Status register (FAULTSTAT, 0x23), defaults highlighted
13.6 Sleep register (SLEEP, 0x24)
Puts the device to sleep (the serial interface remains awake). When asleep, device supply current reduces to 7mA
(typical), the gate drive outputs stop switching, and the LEDs turn off.
Table 13-6. Sleep register (SLEEP, 0x24), defaults highlighted
13.7 Thermistor Temperature register (TEMP, 0x31), Read Only
Reports the thermistor temperature at 2C per LSB. When the thermistor temperature is equal to or below 18C, this
register returns 0x12, or 18C. When the thermistor temperature is equal to or above 80C, this register returns 0x50, or
80C.
Table 13-7. Thermistor Temperature register (TEMP, 0x31), defaults highlighted
Register name Address
Register data
D7 D6 D5 D4 D3 D2 D1 D0
FAULTSTAT 0x23 - - - - - TSD OCFLT SSFLT
No Faults Detected xxxxxx 0 0
LED Short Circuit Fault Detected xxxxxx x 1
String Open Circuit Fault Detected xxxxxx 1 x
The MSL2021 is in Thermal Shutdown xxxxx1 x x
Register name Address
Register data
D7 D6 D5 D4 D3 D2 D1 D0
SLEEP 0x24 - - - - - - - SLEEP
DEFAULT 0000000 0
Device is Awake x x x x x x x 0
Device is Asleep x x x x x x x 1
Register name Address
Register name
D7 D6 D5 D4 D3 D2 D1 D0
TEMP 0x31 TEMP[7:0]
Minimum Value: 0x12 = 18C 0001001 0
Maximum Value: 0x50 = 80C 0101000 0