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MAX7370

8 x 8 Key-Switch Controller and LED Driver/GPIOs

Table 8. Configuration Register (0x01)

X = Don’t care.

REGISTER

BIT

DESCRIPTION

VALUE

FUNCTION

DEFAULT

VALUE

D7

Sleep

X

(when 0x40

D4 = 1)

Key-switch operating mode. Key switches always remain active

when constant-current PWM is enabled (bit 4 of register 0x40 is

0

0

(when 0x40

D4 = 0)

Key-switch sleep

mode. The entire

chip is shut down.

When constant-current PWM is disabled

autosleep, and autowake all can change

any time for current status.

1

(when 0x40

D4 = 0)

Key-switch operating

mode.

D6

Reserved

0

—

0

D5

Interrupt

0

INT cleared when the FIFO is empty.

0

1

FIFO until interrupt condition is removed or further INT could be

lost.

D4

Reserved

0

—

0

D3

Key-release

enable

0

Disable key releases.

1

1

Enable key releases.

D2

Reserved

0

—

0

D1

Autowake

enable

0

Disable keypress wakeup.

1

1

Enable keypress wakeup.

D0

Timeout

disable

0

1

1