Accessory Port (Mcard) Interfaces - Multitech Conduit 300 Series Hardware Manual

Accessory Port (mCard) Interfaces

The accessory card interface on the MTCDT3AC base board has the following interface options:
Interface
I2C
Serial UART
SPI Interface
GPIO
Interrupts
PPS
USB 2.0
5 VDC 1 Amp supply
3.3 VDC 1 Amp supply
For accessory card specifications, regulatory content, and installation information, refer to the appropriate product
page: www.multitech.com/brands/multiconnect-mcard.
®
Conduit 300 Series IoT Programmable Gateway MTCDT3AC-L4G1/-EN Hardware Guide
SETTING UP AND CONFIGURING THE DEVICE
Description
Used by all accessory cards. I2C is required for
Electronic Identification (EID) support on the accessory
card but can be used for other I2C devices. It should
supports standard (100 kHz) and/or fast (400 kHz) clock
speeds.
The I2C interface reserves the full block of EEPROM
address space for Electronic ID support, so we
recommend that you not attach any other EEPROM
devices to the interface. We recommend that you use a
24C04 part, because both address bits of the 24C04 are
connected to the AP interface allowing you to identify
four separate accessory port (AP) cards in a system.
Serial UART with HW flow control used by Serial
interface based Accessory Cards
AP1 and AP2 have option for SPI interface, based on
what Accessory Card is installed.
Additional control pins for certain Accessory Cards.
Software defined interrupts. Can also be used as
additional control pins.
GPS generated Pulse-Per-Second signal used for
software timing. Default is 1 pulse/sec.
A standard USB 2.0 High Speed interface for USB based
Accessory Cards.
Used by all accessory cards.
Used by all accessory cards.
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