CCOMe-C79
CCOMe-C79 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by E.S. Copyright © 2021 SECO S.p.A.
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External EEPROM I2C Flash socket
The I2C bus coming from COM Express
™
module is carried directly
to Feature pin Header (see par.3.3.8).
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 (signal tied to GND).
I2C_DAT: General purpose I2C port data I/O line
I2C_CK: General purpose I2C port clock output
POST Code Display
For debugging purposes, it is available a display made by 4x 7-segment LED display, type Kingbright KCSC02-105 or equivalent.
The management of this display is done using a Lattice LC4064V-75TN44I CPLD, driven through the COM Express
™
LPC Bus
JTAG Connector
For the programming of CPLD used to manage POST Code Display, it is available a JTAG
connector CN16, which is a single row, 7 pin, P2.54mm standard pin header, type ADIMPEX
p/n NPE08007-R.
POST_TCK:
to GND
POST_TDO: JTAG Test Data Out Signal
POST_TDI: JTAG Test Data In, +3.3V_RUN
POST_TMS: JTAG Test Mode Select, +3.3V_RUN
External EEPROM I2C Flash socket CN62
Pin Signal
Pin Signal
1
-up +3.3V_ALW
5
I2C_DAT
2
-up +3.3V_ALW
6
I2C_CK
3
-up +3.3V_ALW
7
I2C_Write Protect (GND)
4
GND
8
+3.3V_ALW
JTAG Connector CN16
Pin Signal
Pin Signal
1
+3.3V_RUN
5
POST_TDO
2
GND
6
POST_TDI
3
POST_TCK
7
POST_TMS
4
N.C.
