18-Port GPIO with LED Intensity Control,
Interrupt, and Hot-Insertion Protection
Table 13. Master, O16 Intensity Register
REGISTER
MASTER AND GLOBAL INTENSITY
Write master and global intensity
Read back master and global intensity
Master intensity duty cycle is 0/15 (off);
internal oscillator is disabled;
all outputs will be static with no PWM
Master intensity duty cycle is 1/15
Master intensity duty cycle is 2/15
Master intensity duty cycle is 3/15
—
Master intensity duty cycle is 13/15
Master intensity duty cycle is 14/15
Master intensity duty cycle is 15/15 (full)
ADDRESS
CODE
R/W (hex)
0
1
—
—
—
—
—
—
0X0E
—
—
REGISTER DATA
D7
D6
D5
D4
MSB
LSB
MASTER INTENSITY
D3
MSB
D2
D1
O16 INTENSITY
D0
LSB
M3
M2
M1
M0
G3
G2
G1
G0
0
0
0
0
—
—
—
—
0
0
0
1
—
—
—
—
0
0
1
0
—
—
—
—
0
0
1
1
—
—
—
—
—
—
—
—
—
—
—
—
1
1
0
1
—
—
—
—
1
1
1
0
—
—
—
—
1
1
1
1
—
—
—
—
O16 intensity duty cycle is 1/16
—
O16 intensity duty cycle is 2/16
—
O16 intensity duty cycle is 3/16
—
—
—
O16 intensity duty cycle is 14/16
—
O16 intensity duty cycle is 15/16
—
O16 intensity duty cycle is 16/16
(static output, no PWM)
—
—
—
—
—
0
0
0
0
—
—
—
—
0
0
0
1
—
—
—
—
0
0
1
0
—
—
—
—
—
—
—
—
—
—
—
—
1
1
0
1
—
—
—
—
1
1
1
0
—
—
—
—
1
1
1
1
20 ______________________________________________________________________________________