Fan Connector; External Eeprom I2C Flash Socket - Seco CCHPC-C78-C User Manual

JP38 position GPIO_10 connected to
1-2 BMC Connector CN58
2-3 GPIO Pin header CN31

FAN Connector

Onboard it is available a 4-pin connector, type MOLEX p/n 47053-3000 or equivalent, for the connection of
FAN Connector CN32
tachometric FANs.
Pin Signal
1 GND
2 FAN_PWR
3 FAN_TACH_IN
4 FAN_PWM
JP9 position FAN driver mode selector
1-2 4-Wires Fan
2-3 3-Wires Fan

External EEPROM I2C Flash socket

External EEPROM I2C Flash socket
Pin Signal
1 -up +3.3V_ALW
2 -up +3.3V_ALW
3 -up +3.3V_ALW
4 GND
CCHPC-C78-C
CCHPC-C78-C - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by E.S. Copyright © 2023 SECO S.p.A.
By using a dedicate jumper JP9, it is possible to select if FAN_PWR is fixed to +12V_RUN, in order to
support 4-wire tachometric fans, or must be controlled by the signal FAN_PWMOUT, coming directly
from COM HPC
CN35
Pin Signal
5 I2C0_DAT
6 I2C0_CLK
7 I2C_Write Protect
8 +3.3V_ALW
JP39 position GPIO_11 connected to
1-2 BMC Connector CN58
2-3 GPIO Pin header CN31
®
module, in order to support 3-wire tachometric fans.
The I2C0 bus coming from COM HPC
to Feature pin Header (see par. 3.3.9) and to the BMC Connector
(see par. 3.3.19).
It is also used to manage an SO8 EEPROM Socket CN62, type
LOTES p/n ASPI0001-P001A, for plugging I2C Flash in SO-8 format.
The I2C_Write Protect function is disabled for this board.
®
module is carried directly
62