Reproduction forbidden without Fibocom Wireless Inc. written authorization - All Rights Reserved
FIBOCOM L610 Series Hardware Guide
Page 27 of 59
Pin
Pin Name
I/O Level
Reset
Value
Description
143
RFCTL_1
I/O
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
VIHmax=2.0V
-
RFCTL_1
Left floating when not in use
144
RFCTL_2
I/O
VILmin=-0.3V
VILmax=0.6V
VIHmin=1.2V
VIHmax=2.0V
-
RFCTL_2
Left floating when not in use
Note:
Unused pins remain floating. All GND pins are connected to the ground network.
A single keyout/OUT button can not be used and needs to be used in conjunction with
KEYOUT/IN.
When USB_BOOT/KEY_IN0 pin and KEYOUT are used as key function in combination, if the
corresponding key is pressed during power-on, the module will enter download mode because
KEYOUT has high pulse output during power-on.
L610-CN-31/32 does not support KEYIN4/KEYIN5
3.1.3 Pin Multiplexing
For L610 pin multiplexing, please refer
FIBOCOM L610 Series GPIO Function Multiplexing
.
3.2 Power Supply
The power interfaces of L610 modules are shown in the following table:
Pin Name
I/O
Pin
Description
VBAT_RF
I
57,58
Module power supply, 3.4~4.3V, nominal value 3.8V
VBAT_BB
I
59,60
Module power supply, 3.4~4.3V, nominal value 3.8V
VDD_EXT
O
7
Voltage output, 1.8V
VDD_SDIO
PO
34
MMC powered LDO, default 3.1V
GND
G
8, 9, 19, 22, 36, 46,
48, 50-54, 56, 85-112
Ground
3.2.1 Power Supply
L610 modules need to be powered by the VBAT pin. The recommended power design is shown in Figure
3-2: