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9 gpio, Table 7-3, Gpio states – Artesyn COMX-P4080 Installation and Use (August 2014) User Manual

Page 94: Bsp operations

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BSP Operations

COMX-P4080 COM Express Module Installation and Use (6806800L20C)

94

When the U-Boot detects the DDR3 SDRAM during boot up, the following message appears:

7.9

GPIO

COMX-P4080 has fourteen general purpose input/output (GPIO).

DRAM: Initializing...

2 GB left unmapped

DDR: 4 GB (DDR3, 64-bit, CL=9, ECC on)

DDR Controller Interleving Mode: cache line

DDR Chip-Select Interleaving Mode: CS0+CS1

Table 7-3 GPIO States

GPIO#

Input/Output

Reset State

Description

GPIO00

I

I

GPI0 of COM-E connectors

GPIO01

I

I

GPI1 of COM-E connectors

GPIO02

I

I

GPI3 of COM-E connectors

GPIO03

I

I

GPI4 of COM-E connectors

GPIO04

O

I

GPO0 of COM-E connectors and also as to control
debug LED D18

GPIO05

O

I

GPO1 of COM-E connectors and also as to control
debug LED D19

GPIO06

O

I

GPO3 of COM-E connectors

GPIO07

O

I

GPO4 of COM-E connectors

GPIO18

O

I

Watchdog Input

GPIO19

O

I

Clock Generator Enable

GPIO20

O

I

Carried board reset output

GPIO23

I

I

Clock generator of bank 1 frequency selection input

GPIO24

I

I

Clock generator of bank 2 frequency selection input

GPIO26

I

I

Clock generator of bank 3 frequency selection input

See also other documents in the category Artesyn Equipment: