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MAX7315

8-Port I/O Expander with LED Intensity Control, Interrupt, and Hot-Insertion Protection

Maxim Integrated 

8-Port I/O Expander with LED Intensity

Control, Interrupt, and Hot-Insertion Protection

Table 13. Master, O8 Intensity Register

REGISTER

MASTER AND GLOBAL INTENSITY

Write master and global intensity

Read back master and global intensity

ADDRESS

CODE

R/W (HEX)

0

1

REGISTER DATA

D7

D6

D5

D4

MSB

LSB

MASTER INTENSITY

D3

MSB

D2

D1

O8 INTENSITY

M3 M2 M1 M0 G3 G2 G1

D0

LSB

G0

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

internal oscillator is disabled;

—

all outputs will be static with no PWM

0

0

0

0

—

—

—

—

Master intensity duty cycle is 1/15

—

0

0

0

1

—

—

—

—

Master intensity duty cycle is 2/15

—

0

0

1

0

—

—

—

—

Master intensity duty cycle is 3/15

—

0

0

1

1

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Master intensity duty cycle is 13/15

—

0X0E

1

1

0

1

—

—

—

—

Master intensity duty cycle is 14/15

—

1

1

1

0

—

—

—

—

Master intensity duty cycle is 15/15 (full) —

1

1

1

1

—

—

—

—

O8 intensity duty cycle is 1/16

—

O8 intensity duty cycle is 2/16

—

O8 intensity duty cycle is 3/16

—

—

—

O8 intensity duty cycle is 14/16

—

O8 intensity duty cycle is 15/16

—

O8 intensity duty cycle is 16/16

—

(static output, no PWM)

—

—

—

—

0

0

0

0

—

—

—

—

0

0

0

1

—

—

—

—

0

0

1

0

—

—

—

—

—

—

—

—

—

—

—

—

1

1

0

1

—

—

—

—

1

1

1

0

—

—

—

—

1

1

1

1

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