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3.20 I2S1 (CN44)
Table 3-27 lists the pin signals of the I2S1 header, which provides 8 pins in a single row with
2.54mm pitch.
Pin #
1
I2S1_LRCK (connected to SMARC pin S43)
2
+V3P3
3
I2S1_SDOUT (connected to SMARC pin S44)
4
+V1P8
5
I2S1_SDIN (connected to SMARC pin S45)
6
GND
7
I2S1_CK (connected to SMARC pin S46)
8
GND
NOTE: Shaded table cells denote power or ground.
3.21 Smart Battery (BattMan) Interface (CN45)
Table 3-28 lists the pin signals of the Smart Battery header, which provides 10 pins in 2 rows,
odd/even pin sequence (1, 2), and 2.54mm pitch.
Pin #
1
SMB_CLK (SMBus clock)
2
SMB_DAT (SMBus data)
3
Not Connected
4
Not Connected
5
ATX_PS_ON (ATX power supply)
6
Not Connected
7
+V12P0_ATX (12-volt power)
8
+V5P0_SBY (5-volt standby power)
9
SMB_ALERT# (SMBus alert)
10
GND
NOTE: The voltage level of this interface is determined by the CN82 jumper header (default 5V
for BattMan supply.) Shaded table cells denote power or ground.
Interfaces
Table 3-27: I2S1 Signals (CN44)
You must configure the jumper settings as
described in Table 3-28, or system damage could
occur when using a BattMan power supply to
Power On the carrier.
Table 3-28: Smart Battery (BattMan) Interface (CN45)
Signal
Signal
Jumper Settings
Make sure to set following jumper
configurations before implementing a
BattMan power supply to Power On the
carrier:
• Install a jumper on the 2-pin jumper
header, CN3 (Enable BattMan power
rail)
• Install a jumper on the 2-pin jumper
header, CN4 (Low active Enable for
BattMan)
• Installed a jumper on pins 1-2 of the
CN81 jumper header
(VIN_PWR_BAD#, +5V_SBY)
• Install a jumper on pins 2-3 of the
CN82 jumper header (BattMan
SMBus,
5 volts)
LEC-BASE MINI
35
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