CQ7-A30
CQ7-A30 - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
61
3.3.24
Feature internal pin header
For further expandability of the system, on board there is an expansion connector, which carries out the signals related to Watch Dog, I2C bus, SM Bus, thermal
and power management. These signals allow implementing, through external expansion modules, further functionalities that are not already realised by the carrier
board.
For this purpose, it is available a dual row, 40 pin,
P2.54mm standard pin header, with the pinout shown
in the table on the left.
HDD_ACT#: Disk drive activity signal, active low. It is derived as the logical AND of
SDIO_ACT# and SATA_ACT# signals.
PSON#: this signal (+5V_A electrical level) is derived by inverting SUS_S3# signal.
The signals not described until now come out directly from the Qseven
®
connector;
please check the related table for a description of them.
A special consideration has to be made on signal GP_PWM_OUT[0..2] and
GP_TIMER_IN.
These, indeed, are multiplexed signals available on Qseven
®
card edge connector, which
can be used, respectively, also as LVDS_BLT_CTRL, FAN_PWMOUT, SPKR and
FAN_TACHOIN.
By using the dedicated Dip Switch SW11, it is possible to select individually if these
signals must have the specific or the General Purpose functionality.
Setting of these signals
can be made according
to the table on the left.
Feature pin header - CN4
Pin Signal
Pin Signal
1
+5V_S
2
+5V_A
3
+3.3V_S
4
HDD_ACT#
5
GP0_I2C_DAT
6
SMB_CLK
7
GP0_I2C_CLK
8
SMB_DAT
9
N.C.
10
GP_PWM_OUT0
11
N.C.
12
GP_PWM_OUT1
13
PSON#
14
GP_PWM_OUT2
15
SUS_S3#
16
1-Wire_Bus
17
GND
18
GND
19
THRMTRIP#
20
SMB_ALERT#
21
N.C.
22
N.C.
23
SUS_STAT#
24
GP_TIMER_IN
25
N.C.
26
SUS_S5#
27
WDTRIG#
28
THRM#
29
WDOUT
30
N.C.
31
BATLOW#
32
WAKE#
33
LVDS_DID_DAT
34
N.C.
35
LVDS_DID_CLK
36
RSTBTN#
37
GND
38
GND
39
PWRBTN#
40
PWGIN
SW11 Switch
ON Position
OFF Position
1
LVDS_BLT_CTRL
GP_PWM_OUT0
2
FAN_PWMOUT
GP_PWM_OUT1
3
SPKR
GP_PWM_OUT2
4
FAN_TACHOIN
GP_TIMER_IN
