Accessory Port (Mcard) Interfaces - Multitech MultiConnect Conduit MTCDT Hardware Manual

Accessory Port (mCard) Interfaces

The accessory card interface on the Conduit base board has the following interface options:
Interface
I2C
Serial UART
SDIO interface and/or SPI Interface
GPIO
Interrupts
® TM
MultiConnect Conduit 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
inteface based Accessory Cards
AP1 has option for SDIO or SPI interface, based on what
Accessory Card is installed. AP2 supports only SPI based
Accessory Cards.
Additional control pins for certain Accessory Cards.
Software defined interrupts. Can also be used as
additional control pins.
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