ISL97635 datasheet(22/28 Pages) RENESAS

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ISL97635

FN6434 Rev.3.00

Page 22 of 28

Sep 26, 2017

FAULT/STATUS REGISTER

RESERVED

2_CH_SD

1_CH_SD

BL_STAT

OV_CURR

THRM_SHDN

FAULT

Bit 7 (R)

Bit 6 (R)

Bit 5 (R)

Bit 4 (R)

Bit 3 (R)

Bit 2 (R)

Bit 1 (R)

Bit 0 (R)

BIT

BIT ASSIGNMENT

BIT FIELD DEFINITIONS

Bit 5

2_CH_SD

= Two LED output channels are shutdown (1 = shutdown, 0 = OK)

Bit 4

1_CH_SD

= One LED output channel is shutdown (1 = shutdown, 0 = OK)

Bit 3

BL_STAT

= BL Status (1 = BL On, 0 = BL Off)

Bit 2

OV_CURR

= Input Overcurrent (1 = Overcurrent condition, 0 = Current OK)

Bit 1

THRM_SHDN

= Thermal Shutdown (1 = Thermal Fault, 0 = Thermal OK)

Bit 0

FAULT

= Fault occurred (Logic “OR” of all of the fault conditions)

FIGURE 26. DESCRIPTIONS OF FAULT/STATUS REGISTER

ID REGISTER

LED PANEL

MFG3

MFG2

MFG1

MFG0

REV2

REV1

REV0

Bit 7 = 1

Bit 6 (R)

Bit 5 (R)

Bit 4 (R)

Bit 3 (R)

Bit 2 (R)

Bit 1 (R)

Bit 0 (R)

BIT ASSIGNMENT

BIT FIELD DEFINITIONS

MFG[3..0]

= Manufacturer ID. Refer to “Identification Register

(0x03)” on page 21.

data 0 to 8 in decimal correspond to other vendors

data 9 in decimal represents Intersil ID

data 10 to 14 in decimal are reserved

data 15 in decimal Manufacturer ID is not

implemented

REV[2..0]

= Silicon rev (Rev 0 through Rev 7 allowed for silicon

spins)

FIGURE 27. DESCRIPTIONS OF ID REGISTER

FIGURE 28. DESCRIPTIONS OF DC BRIGHTNESS CONTROL REGISTER

DC BRIGHTNESS CONTROL REGISTER

BRTDC7

BRTDC6

BRTDC5

BRTDC4

BRTDC3

BRTDC2

BRTDC1

BRTDC0

Bit 7 (R/W)

Bit 6 (R/W)

Bit 5 (R/W)

Bit 4 (R/W)

Bit 3 (R/W)

Bit 2 (R/W)

Bit 1 (R/W)

Bit 0 (R/W)

BIT ASSIGNMENT

BIT FIELD DEFINITIONS

BRTDC[7..0]

= 256 steps of DC brightness levels

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