ALT1210MOD-VZ-01 User Module
Rev 1.0
Altair Semiconductor Proprietary and Confidential
16
4.3.2.
Host Interface (Pins #27 and #79)
This Interface allows both the Host and the modem to enter their power
consumption savings states whenever possible, in order to optimize power
consumption. The idea is to have a simple interface allowing the host and modem
to wake each other up when required and to acknowledge once ready.
Due to the GPIOs quantity limitation in most Host processors this simple interface
only uses two lines.
For a more detailed explanation on this interface implementation please check
“Altair_SW_219_Rev2_host_interface_HL_design”
application note.
4.3.3.
UIM Interface (Pins #4, #59, #60, #5 and #7)
This Interface allows the use of an external 1.8V sim card on the application board.
The external SIM is powered from an internal 1.8V regulator (VSIM (pin# 7).
Please note the modem only supports 1.8V SIM/eSIM cards and requires the use of
external pull up/down resistors to maintain the polarity of the SIM_CLK line for
eSIM devices.
Regular SIM devices may be used externally to the module, but since all modem
digital IOs are not maintained during hibernation states, if there is a need to
maintain the SIM ON during modem hibernation states, it is necessary to add an
external latch to keep the UIM_CLK value.
4.3.4.
USB Interface (Pins #13 and #14)
The ALT1210MOD-VZ-01 module also supports USB 2.0 interface (primarily used
for production and debug purposes due to the extra power consumption).
The USB interface requires proper SW drivers. For more information on the proper
drivers to be used please contact Altair application team.
4.3.5.
UART1 (Pins #11, #65, #10, #64 and optional #80, #26, #82, #25)
The UART1 interface is a 1mbps UART interface. It can be used as a two pin
interface, 4 pin interface or even 8 pin interface.
4.3.6.
UART2 (Pins #8 and #9)
The UART2 interface is a 1mbps UART interface. It can be used only as a simple two
pin interface.
4.3.7.
I2C (Pins #19 and #73)
The ALT1210MOD-VZ-01 module can also operate as the Master of an I2C bus to
control external devices. These two signals require external 10k ohm pull-up
resistors to 1V8_IO_IN rail.