Rainbow-electronics MAX7313 Manual do Utilizador descarregar pdf (Página 15)

MAX7313

16-Port I/O Expander with LED Intensity

Control and Interrupt

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Table 4. Configuration Register (continued)

ADDRESS

CODE

(HEX)

D7 D6 D5 D4 D3 D2 D1 D0

CONFIGURATION

R/W

INTERRUPT

STATUS

—

INTERRUPT

OUTPUT

CONTROL

AS GPO

INTERRUPT

ENABLE

GLOBAL

INTENSITY

BLINK FLIP

BLINK

ENABLE

Write device configuration

Read back device configuration

INT

O0 I G B E

Disable global intensity control—intensity

is set by registers 0x10–0x17 for ports P0

through P15 when configured as outputs,

and by D3–D0 of register 0x0E for

INT/O16 when INT/O16 pin is configured

as an output port

—

XXXXX0 XX

Enable global intensity control—intensity

for all ports configured as outputs is set

by D3–D0 of register 0x0E

—

XXXXX1 XX

Disable data change interrupt—INT/O16

output is controlled by the O0 and O1 bits

—

XXXX0 XXX

Enable data change interrupt—INT/O16

output is controlled by port input data

change

—

XXXX1 XXX

INT/O16 output is low (blink is disabled)

—

XXX00XX0

INT/O16 output is high impedance (blink

is disabled)

—

XXX10XX0

IN T/O16 outp ut i s l ow d ur i ng b l i nk p hase 0

—

XXX00XX1

INT/O16 output is high impedance during

blink phase 0

—

XXX10XX1

IN T/O16 outp ut i s l ow d ur i ng b l i nk p hase 1

—

0 X 0 X 0 XX1

INT/O16 output is high impedance during

blink phase 1

—

1 X 1 X 0 XX1

Read-back data change interrupt status

—data change is not detected, and

INT/O16 output is high when interrupt

enable (I bit) is set

0XXXXXX

Read-back data change interrupt status

—data change is detected, and INT/O16

output is low when interrupt enable (I bit)

is set

0x0F

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 26 27

Control and Interrupt 1

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