Seco Qseven CQ7-D59 User Manual page 49

3.3.18 GPIO internal pin header
GPIO internal pin header - CN33
Pin Signal
1 +3.3V_ALW
3 GPIO_0
5 GPIO_1
7 GPIO_2
9 GPIO_3
11 GPIO_4
13 GPIO_5
15 GPIO_6
17 GPIO_7
19 GND
When the I/O Port Expander is connected to SM Bus, then its interrupt line is connected to SMBALERT# signal, otherwise it is connected to FAN_TACHOIN signal.
3.3.19 FAN Connector
FAN Connector - CN23
Pin Signal
1 GND
2 FAN_POWER
3 FAN_TACHO_IN
Please refer to chapter 4.1 for considerations about thermal dissipation.
FAN_POWER: +12V_ALW derived power rail for FAN, managed by PWM signal FAN_PWMOUT coming from Qseven
FAN_TACHO_IN: tachometric input from the fan to the Qseven
CQ7-D59
CQ7-D59 - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: S.O. - Reviewed by S.B. Copyright © 2021 SECO S.p.A.
Pin Signal
2 +3.3V_ALW
4 GPIO_8
6 GPIO_9
8 GPIO_10
10 GPIO_11
12 GPIO_12
14 GPIO_13
16 GPIO_14
18 GPIO_15
20 GND
Depending on the usage model of systems based on CQ7-D59 carrier board, for critical applications/environments it is available
a 3-pin dedicated connector for an external +12V
FAN Connector is a 3-pin single line SMT connector, type MOLEX 22-27-2031 or equivalent, with pinout
shown in the table on the left.
Mating connector: MOLEX 22-01-2035 receptacle with MOLEX 2759 or 4809 KK
Please be aware that the use of an external fan depends strongly on customer's application/installation.
®
module.
Interfaced to SM Bus of CQ7-D59 carrier board there is a device, ON Semiconductors
PCA9655E, which provides 16 General Purpose I/O pins.
Each of these pins can be individually configured to be an input or an output. By default,
all signals are configured as 3.3V inputs, with a 100kOhm internal pull-up resistor. It is
possible, by programming the internal registers of PCA9655E, change the direction of every
single bit, making them work as outputs.
All these signals are available on a dual row, 20 pin, P2.54mm
standard pin header, with the pinout shown in the table on the
left.
The PCA9655E I/O Port Expander device can be interfaced to SM Bus or I2C line coming
®
out from Qseven connector. The selection is made by using the dedicated jumper JP9
which is a standard pin header,
P2.54mm, 1x2 pin, according to
the table on the right.
FAN.
DC
JP9 position I/O Port Expander Connected to:
Not Inserted I2C Bus
Inserted SM Bus
® crimp terminals.
®
connector.
®
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