16-Port I/O Expander with LED Intensity

Control, Interrupt, and Hot-Insertion Protection

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23

Table 14. Output Intensity Registers (continued)

REGISTER DATA

REGISTER

ADDRESS

CODE

(HEX)

D7

D6

D5

D4

D3

D2

D1

D0

MSB

LSB

MSB

LSB

OUTPUTS P9, P8 INTENSITY

R/

W

OUTPUT P9 INTENSITY

OUTPUT P8 INTENSITY

Write output P9, P8 intensity

0

Read back output P9, P8 intensity

1

0x14

P9I3

P9I2

P911

P9I0

P8I3

P812

P811

P810

MSB

LSB

MSB

LSB

OUTPUTS P11, P10 INTENSITY

OUTPUT P11 INTENSITY

OUTPUT P10 INTENSITY

Write output P11, P10 intensity

0

Read back output P11, P10 intensity

1

0x15

P11I3

P11I2

P11I1

P11I0

P10I3

P10I2

P10I1

P10I0

MSB

LSB

MSB

LSB

OUTPUTS 13, P12 INTENSITY

OUTPUT P13 INTENSITY

OUTPUT P12 INTENSITY

Write output P13, P12 intensity

0

Read back output P13, P12 intensity

1

0x16

P13I3

P13I2

P13I1

P13I0

P12I3

P12I2

P12I1

P12I0

MSB

LSB

MSB

LSB

OUTPUTS P15, P14 INTENSITY

OUTPUT P15 INTENSITY

OUTPUT P14 INTENSITY

Write output P15, P14intensity

0

Read back output P15, P14 intensity

1

0x17

P15I3

P15I2

P15I1

P15I0

P14I3

P14I2

P14I1

P14I0

OUTPUT O16 INTENSITY

See master, O16 intensity register (Table 13).

Table 15. MAX7311, PCA9535, and PCA9555 Register Compatibility

MAX7311,

PCA9535,

PCA9555

REGISTER

ADDRESS

MAX7313 IMPLEMENTATION

MAX7311, PCA9535,

PCA9555

IMPLEMENTATION

COMMENTS

Inputs P15–P0

0x00, 0x01

Inputs registers

Implemented

Same functionality

Outputs P15–P0

0x02, 0x03

Blink phase 0 registers

Implemented

Same functionality

Polarity inversion

0x04, 0x05

Not implemented; register writes are

ignored; register reads return 0x00

Implemented;

power-up default is

0x00

If polarity inversion feature

is unused, MAX7313

defaults to correct state

Configuration

0x06, 0x07

Ports configuration registers

Not implemented

Same functionality

No registers

0x0B, 0x0C

Blink phase 1 registers

Not implemented

No register

0x0E

Master, O16 intensity register

Not implemented

No register

0x0F

Configuration register

Not implemented

No registers

0x10–0x17

Outputs intensity registers

Not implemented

Power-up default disables

the blink and intensity

(PWM) features