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FIBOCOM L860-GL Series Hardware Guide
Page 43 of 60
ANT_CONFIG
L860 module can be configured to support dual antennas or 4 antennas by detecting the ANT_CONFIG
pin. ANT_CONFIG is an input port which is pulled high internal in default. When ANT_CONFIG is high
level, then module supports dual antennas (Main & D/G ANT). When module detects low level of
ANT_CONFIG, then module will be configured to support 4 antennas. The definition of ANT_CONFIG
signal is shown as below table:
ANT_CONFIG Signal Function
High/Floating
Support dual antennas (Main & D/G ANT)
,
Reserved
Low
Support 4 antennas
(Reserved)
3.8
ANT Tunable Interface
The module supports ANT Tunable interfaces with two different control modes, i.e. MIPI interface and 4bit
GPO interface. Through cooperating with external antenna adapter switch via ANT Tunable, it can flexibly
configure the bands of LTE antenna to improve the antenna’s working efficiency and save space for the
antenna.
Pin
Pin Name
I/O
Pin Description
Type
56
RFFE_SCLK
O
Tunable ANT control, MIPI Interface,
RFFE clock
1.8V
58
RFFE_SDATA
I/O
Tunable ANT control, MIPI Interface,
RFFE data
1.8V
59
ANTCTL0
O
Tunable ANT control, GPO interface,
Bit0
1.8V
61
ANTCTL1
O
Tunable ANT control, GPO interface,
bit1
1.8V
63
ANTCTL2
O
Tunable ANT control, GPO interface,
Bit2
1.8V
65
ANTCTL3
O
Tunable ANT control, GPO interface,
Bit3
1.8V
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