TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28
System description
Page 57 of 164
1.11
General Purpose Input/Output
☞
GPIOs are not supported by TOBY-L2 modules “00”, “01” and “60” product versions, except for the
Wireless Wide Area Network status indication configured on GPIO1 pin.
☞
GPIOs are not available on MPCI-L2 series modules.
TOBY-L2 series modules include 14 pins (GPIO1-GPIO6, I2S_TXD, I2S_RXD, I2S_CLK, I2S_WA, DTR,
DSR, DCD, RI) that can be configured as General Purpose Input/Output or to provide custom functions
via u-blox AT commands (see the u-blox AT Commands Manual
, +UGPIOC, +UGPIOR, +UGPIOW AT
commands), as summarized in
Function
Description
Default GPIO
Configurable GPIOs
Network status indication
Network status: registered home network,
registered roaming, data transmission, no service
--
All
SIM card detection
SIM card physical presence detection
GPIO5
GPIO5
SIM card hot
insertion/removal
Enable / disable SIM interface upon detection of
external SIM card physical insertion / removal
--
GPIO5
I
2
S digital audio interface
17
I2S digital audio interface
I2S_RXD, I2S_TXD,
I2S_CLK, I2S_WA
I2S_RXD, I2S_TXD,
I2S_CLK, I2S_WA
Master clock output
13 MHz / 26 MHz clock output for an external device
as an audio codec
GPIO6
GPIO6
Wi-Fi enable
Enable/disable the supply of the external u-blox
Wi-Fi module connected to the cellular module
GPIO1
All
DSR
UART data set ready output
DSR
DSR
DTR
UART data terminal ready input
DTR
DTR
DCD
UART data carrier detect output
DCD
DCD
RI
UART ring indicator output
RI
RI
General purpose input
Input to sense high or low digital level
--
All
General purpose output
Output to set the high or the low digital level
GPIO4
All
Pin disabled
Tri-state with an internal active pull-down enabled GPIO2, GPIO3
All
Table 13: TOBY-L2 series GPIO custom functions configuration
17
Not supported by TOBY-L201-02S and TOBY-L220-62S product versions.