Rainbow-electronics MAX7315 Manual do Utilizador descarregar pdf (Página 14)

MAX7315

8-Port I/O Expander with LED Intensity

Control and Interrupt

14 ______________________________________________________________________________________

Table 3. Power-Up Configuration

ADDRESS

CODE

(HEX)

D7 D6 D5 D4 D3 D2 D1 D0

Blink phase 0 outputs P7–P0 High-impedance outputs 0x01 1 1 1 1 1 1 1 1

Ports configuration P7–P0 Ports P7–P0 are inputs 0x03 1 1 1 1 1 1 1 1

Blink phase 1 outputs P7–P0 High-impedance outputs 0x09 1 1 1 1 1 1 1 1

Master, O8 intensity

PWM oscillator is disabled;

O8 is static logic output

0x0E 0 0 0 0 1 1 1 1

Configuration

INT/O8 is interrupt output;

blink is disabled;

global intensity is enabled

0x0F 0 0 0 0 1 1 0 0

Outputs intensity P1, P0 P1, P0 are static logic outputs 0x10 1 1 1 1 1 1 1 1

Outputs Intensity P3, P2 P3, P2 are static logic outputs 0x11 1 1 1 1 1 1 1 1

Outputs intensity P5, P4 P5, P4 are static logic outputs 0x12 1 1 1 1 1 1 1 1

Outputs intensity P7, P6 P7, P6 are static logic outputs 0x13 1 1 1 1 1 1 1 1

Table 4. Configuration Register

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 blink

—

XXXXXXX0

Enable blink

—

XXXXXXX1

—

XXXXXX01

Flip blink register (see text)

—

XXXXXX11

Disable global intensity control—intensity

is set by registers 0x10–0x13 for ports P0

through P7 when configured as outputs,

and by D3–D7 of register 0x0E for INT/O8

when INT/O8 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

—

0x0F

XXXXX1 XX

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 26 27

Control and Interrupt 1

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