Interrupt Logic; Jtag; Gpio; Table 4-1 Gpio Description - SMART Embedded Computing COMX-P2020 Installation And Use Manual

4.8

Interrupt Logic

P2020 has a programmable interrupt controller, which conforms to OpenPIC architecture.

Figure 4-5 Interrupt Logic

4.9

JTAG

COMX-P2020 supports JTAG for CPU and GE PHY debugging. See
66 for the debug ports pinout.
4.10

GPIO

There are total 14 GPIO PIN used at COMX-P2020; GPIO8 and GPIO9 are used for SDHC
function.
Table 4-1
Name
GPIO 0
GPIO 1
COMX-P2020 Module Installation and Use (6806800K97F)
GPIO Description
Intput/ Output Reset Value
Input
Input
Functional Description
Description
connected to the COM Express carrier board
connected to the COM Express carrier board
Debug Ports on page
75