CCOMe-965
CCOMe-965 - Rev. First Edition: 1.0 - Last Edition: 3.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
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Port1R: Analog Port 1 (Microphone) Right Channel.
Sense1_return: Analog Port 1 - Jack detection return signal.
PRESENCE#: Active Low signal, used to signal to the module that a HD Audio dongle is connected to the header
Port2L: Analog Port 2 (Headphone) Left Channel.
Port2R: Analog Port 2 -(Headphone) Right Channel.
Sense2_return: Analog Port 2 - Jack detection return signal.
SDIN signal coming from HD Audio Codec can be connected alternatively to signals
HDA_SDIN0 or HDA_SDIN2 coming out from COM Express CPU module. For this
purpose, it is necessary to configure properly jumper JP1, according to the table on the left.
3.3.19
I2C EEPROM socket
In many applications it is useful to have a small non-volatile storage device, like an
EEPROM.
For this purpose, connected to I2C bus, there is an 8-pin DIP socket p2.54mm, type
TE p/n 2-1571552-2 or equivalent, with the pinout shown in the table on the left:
Please notice that address lines (A0, A1 and A2) and Write Protect (WP) line have to be set
manually set by the customer using a dedicated switch (SW1), which is placed right near the I2C
EEPROM Socket.
Setting of these signals can be made according to the following table.
JP1 position
HD Audio Codec SDIN connected to
1-2
HDA_SDIN0
2-3
HDA_SDIN2
I2C EEPROM socket - CN31
Pin Signal
Pin Signal
1
A0
8
+3.3V_A
2
A1
7
WP
3
A2
6
I2C_CK
4
GND
5
I2C_DAT
SW1 Switch
ON Position
OFF Position
1
WP = 0
WP = 1
2
A0 = 0
A0 = 1
3
A1 = 0
A1 = 1
4
A2 = 0
A2 = 1
