SystemBase Eddy Series, Руководство пользователя

Страница: 30 / 89

Chapter 3. Hardware Description
Pin Signal Description
1,2 VCC 3.0 ~ 5.5V DC input
3 NTRST Test Reset Signal
4 TDI Test Data In
5 TCK Test Clock
6 TDO Test Data Out
7 TMS Test Mode Select
8 NRST Reset signal for external devices
9 RDY#
Ready indicator (Active low output)
Processor status can be indicated, when connected as below.
10 nRESET
Connection to external reset switch (Input)
As reset logic is built-in, this pin can be connected directly to the
switch without any additional circuit. When pressing the switch
for more than 5 seconds (low input), factory default settings are
restored.
11 GND Ground
12 GND Ground
13 GPIO0 Programmable I/O 0 (user-defined I/O)
14 GPIO1 Programmable I/O 1 (user-defined I/O)
15 GPIO2 Programmable I/O 2 (user-defined I/O)
16 GPIO3 Programmable I/O 3 (user-defined I/O)
3-5