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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.
JP1 position
HD Audio Codec SDIN connected to
1-2
HDA_SDIN0
2-3
HDA_SDIN2
3.3.19 I2C EEPROM socket
I2C EEPROM socket - CN31
Pin
Signal
Pin
1
A0
8
2
A1
7
3
A2
6
4
GND
5
Setting of these signals can be made according to the following table.
SW1 Switch
ON Position
1
WP = 0
2
A0 = 0
3
A1 = 0
4
A2 = 0
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.
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.
In many applications it is useful to have a small non-volatile storage device, like an
EEPROM.
Signal
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:
+3.3V_A
Please notice that address lines (A0, A1 and A2) and Write Protect (WP) line have to be set
WP
manually set by the customer using a dedicated switch (SW1), which is placed right near the I2C
I2C_CK
EEPROM Socket.
I2C_DAT
OFF Position
WP = 1
A0 = 1
A1 = 1
A2 = 1
51
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