Datasheet

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MAX7315

8-Port I/O Expander with LED Intensity

Control, Interrupt, and Hot-Insertion Protection

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Table 13. Master, O8 Intensity Register

REGISTER DATA

REGISTER

ADDRESS

CODE

(HEX)

D7 D6 D5 D4 D3 D2 D1 D0

MSB

LSB

MSB

LSB

MASTER AND GLOBAL INTENSITY

R/W

MASTER INTENSITY O8 INTENSITY

Write master and global intensity

0

Read back master and global intensity

1

M3

M2

M1

M0

G3

G2

G1

G0

Master intensity duty cycle is 0/15 (off);

internal oscillator is disabled;

all outputs will be static with no PWM

—

0000————

Master intensity duty cycle is 1/15

—

0001————

Master intensity duty cycle is 2/15

—

0010————

Master intensity duty cycle is 3/15

—

0011————

—

—

————————

Master intensity duty cycle is 13/15

—

1101————

Master intensity duty cycle is 14/15

—

1110————

Master intensity duty cycle is 15/15 (full)

—

1111————

O8 intensity duty cycle is 1/16

—

———— 0 0 0 0

O8 intensity duty cycle is 2/16

—

———— 0 0 0 1

O8 intensity duty cycle is 3/16

—

———— 0 0 1 0

—

—

————————

O8 intensity duty cycle is 14/16

—

———— 1 1 0 1

O8 intensity duty cycle is 15/16

—

———— 1 1 1 0

O8 intensity duty cycle is 16/16

(static output, no PWM)

—

0X0E

———— 1 1 1 1