J1302 - Fan Connector; J1303 - Battery Holder; Hardware Description; Buttons - Enclustra Mars PM3-R5 User Manual

2.8.14 J1302 – Fan Connector
At this connector a 12V fan with sense signal can be installed.
Connector Pin Signal
1 GND
2 VCC_12V
3 SYSMON_TACHO (Sense signal to determine fan speed)
2.8.15 J1303 – Battery Holder
In this battery holder a 3V CR1220 battery for the FPGA module RTC can be installed. The battery
holder was not equipped in boards prior revision R4.
Connector Pin Signal
1 GND
2 VBAT_IN

2.9 Hardware description

This section gives an overview of the Mars PM3 Board features. More detailed information can be
found in the Mars PM3 Board schematics1.
2.9.1

Buttons

Button Description
SRST Soft Reset: This active low button is connected to the FPGA through J200, pin 192
(SRST#_RDY#) and may be used as a soft reset or depending on the module as user button.
(S1201)
POR Hard Reset: This active low button is connected to the PROG_N/CONFIG_N pin of the FPGA
or the POR_N of SOC devices. It forces the FPGA to clear the current configuration and
(S1202)
reboots SOC devices.
BTN User Button: This active low button can be used as user button. It is connected to the FPGA
(S1203) through J200, pin 129 and is shared with the FX3_FLAGB signal.
23/04/2019
Table 14: J1301 – Internal power connector
Table 15: J1302 – Fan connector
Table 16: J1303 – Battery holder

Table 17: Buttons

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