Rainbow Electronics MAX16066 - Manual (Page 22)

12-Channel/8-Channel, Flash-Configurable System
Managers with Nonvolatile Fault Registers
MAX16065/MAX16066
22 _____________________________________________________________________________________
When GPIO1 – GPIO8 are configured as general-pur-
pose inputs/outputs, read values from the GPIO_ ports
through r1Eh and write values to GPIO_s through r3Eh.
Note that r3Eh has a corresponding flash register, which
programs the default state of a general-purpose output.
See Table 11 for more information on reading and writing
to the GPIO_.
Fault1 and Fault2
GPIO1 – GPIO8 are configurable as dedicated fault out-
puts, Fault1 or Fault2. Fault outputs can assert on one or
more overvoltage, undervoltage, or early warning condi-
tions for selected inputs, as well as the secondary over-
current comparator. Fault1 and Fault2 dependencies are
set using registers r36h to r3Ah. See Table 14. When
a fault output depends on more than one MON_, the
fault output asserts when one or more MON_ exceeds a
programmed threshold voltage. These fault outputs act
independently of the critical fault system, described in
the Critical Faults section.
Table 11. GPIO_ State Registers
Table 12. GPIO_ Configuration Registers
REGISTER
ADDRESS
FLASH
ADDRESS
BIT RANGE DESCRIPTION
1Eh —
[0] GPIO1 input state
[1] GPIO2 input state
[2] GPIO3 input state
[3] GPIO4 input state
[4] GPIO5 input state
[5] GPIO6 input state
[6] GPIO7 input state
[7] GPIO8 input state
3Eh 23Eh
[0] GPIO1 output state
[1] GPIO2 output state
[2] GPIO3 output state
[3] GPIO4 output state
[4] GPIO5 output state
[5] GPIO6 output state
[6] GPIO7 output state
[7] GPIO8 output state
REGISTER
ADDRESS
FLASH
ADDRESS
BIT RANGE DESCRIPTION
3Fh 23Fh
[2:0] GPIO1 configuration
[5:3] GPIO2 configuration
[7:6] GPIO3 configuration (LSB)
40h 240h
[0] GPIO3 configuration (MSB)
[3:1] GPIO4 configuration
[6:4] GPIO5 configuration
[7] GPIO6 configuration (LSB)