Rainbow Electronics MAX7315 - Manual (Page 22)

MAX7315
8-Port I/O Expander with LED Intensity
Control and Interrupt
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Table 14. Output Intensity Registers
REGISTER DATA
REGISTER
ADDRESS
CODE
(HEX)
D7 D6 D5 D4 D3 D2 D1 D0
MSB LSB MSB LSB
OUTPUTS P1, P0 INTENSITY
R/
W
OUTPUT P1 INTENSITY OUTPUT P0 INTENSITY
Write output P1, P0 intensity 0
Read back output P1, P0 intensity 1
P1I3 P1I2 P1I1 P1I0 P0I3 P0I2 P0I1 P0I0
Output P1 intensity duty cycle is 1/16 — 0 0 0 0 — — — —
Output P1 intensity duty cycle is 2/16 — 0 0 0 1 — — — —
Output P1 intensity duty cycle is 3/16 — 0 0 1 0 — — — —
— — — — — — — — — —
Output P1 intensity duty cycle is 14/16 — 1 1 0 1 — — — —
Output P1 intensity duty cycle is 15/16 — 1 1 1 0 — — — —
Output P1 intensity duty cycle is 16/16
(static logic level, no PWM)
— 1 1 1 1 — — — —
Output P0 intensity duty cycle is 1/16 — — — — — 0 0 0 0
Output P0 intensity duty cycle is 2/16 — — — — — 0 0 0 1
Output P0 intensity duty cycle is 3/16 — — — — — 0 0 1 0
— — — — — — — — — —
Output P0 intensity duty cycle is 14/16 — — — — — 1 1 0 1
Output P0 intensity duty cycle is 15/16 — — — — — 1 1 1 0
Output P0 intensity duty cycle is 16/16
(static logic level, no PWM)
—
0X10
— — — — 1 1 1 1
MSB LSB MSB LSB
OUTPUTS P3, P2 INTENSITY
OUTPUT P3 INTENSITY OUTPUT P2 INTENSITY
Write output P3, P2 intensity 0
Read back output P3, P2 intensity 1
0x11
P3I3 P3I2 P3I1 P3I0 P2I3 P2I2 P2I1 P2I0
MSB LSB MSB LSB
OUTPUTS P5, P4 INTENSITY
OUTPUT P5 INTENSITY OUTPUT P4 INTENSITY
Write output P5, P4 intensity 0
Read back output P5, P4 intensity 1
0x12
P5I3 P5I2 P5I1 P5I0 P4I3 P4I2 P4I1 P4I0
MSB LSB MSB LSB
OUTPUTS P7, P6 INTENSITY
OUTPUT P7 INTENSITY OUTPUT P6 INTENSITY
Write output P7, P6 intensity 0
Read back output P7, P6 intensity 1
0x13
P7I3 P7I2 P7I1 P7I0 P6I3 P6I2 P6I1 P6I0
OUTPUT O8 INTENSITY See the master, O8 intensity register (Table 13).