Rainbow Electronics MAX7313 - Manual (Page 15)

MAX7313
16-Port I/O Expander with LED Intensity
Control and Interrupt
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Table 4. Configuration Register (continued)
REGISTER DATA
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 0 X
Read back device configuration 1
INT
O
O1 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
— X X X X X 0 X X
Enable global intensity control—intensity
for all ports configured as outputs is set
by D3–D0 of register 0x0E
— X X X X X 1 X X
Disable data change interrupt—INT/O16
output is controlled by the O0 and O1 bits
— X X X X 0 X X X
Enable data change interrupt—INT/O16
output is controlled by port input data
change
— X X X X 1 X X X
INT/O16 output is low (blink is disabled) — X X X 0 0 X X 0
INT/O16 output is high impedance (blink
is disabled)
— X X X 1 0 X X 0
INT/O16 outp ut i s l ow d ur i ng b l i nk p hase 0 — X X X 0 0 X X 1
INT/O16 output is high impedance during
blink phase 0
— X X X 1 0 X X 1
INT/O16 outp ut i s l ow d ur i ng b l i nk p hase 1 — 0 X 0 X 0 X X 1
INT/O16 output is high impedance during
blink phase 1
— 1 X 1 X 0 X X 1
Read-back data change interrupt status
—data change is not detected, and
INT/O16 output is high when interrupt
enable (I bit) is set
1 0 X X X X X X
Read-back data change interrupt status
—data change is detected, and INT/O16
output is low when interrupt enable (I bit)
is set
1
0x0F