Functional Block Description
6
SPRUII2 – November 2017
Copyright © 2017, Texas Instruments Incorporated
AM437x IDK Evaluation Hardware
2.6
JTAG
The AM437x Industrial EVM supports embedded, XDS100V2 USB Emulation through the MicroUSB AB
connector. The EVM also has an optional 20-pin, CJTAG connector, from TI, to support the Emulation.
This CJTAG connector is not installed by default.
2.7
Memories Supported
The Industrial EVM supports onboard memories like the DDR3 SDRAM and SPI NOR Flash. The EVM
also supports a microSD card socket.
2.7.1
DDR3L SDRAM
The Industrial EVM design supports up to 8Gbit (2 × 256M × 16) of DDR3L SDRAM memory. The part
number for the DDR3L SDRAM memory used is MT41K256M16HA-125 AIT:E. The package used is a 96-
ball TFBGA package. See the AM437x TRM for memory locations of this memory.
2.7.2
SPI NOR Flash
The Industrial EVM supports a 512-Kbit (128K × 4) SPI flash memory from Macronix (MX66L51235FMI-
10G) in a 16SOIC package. The SPI port of the AM437X device is used to interface with the flash.
2.7.3
Board Identity Memory
Each board contains a 256KB serial EEPROM which contains board specific data that allows the
processor to automatically detect which board is connected and the version of that board. Other hardware-
specific data can be stored on this memory device as well. The part number of the memory device is
CAT24C256WI-G. See
for details on the data in this memory.
2.7.4
SD/MMC0
The SD/MMC connector on the Industrial EVM is a microSD connector, part number SCHA5B0200. This
is a standard SD/MMC Card type of connector. It is connected to the MMC0 port of the AM437x
processor. Check the AM437x data sheet and TRM for supported card types/densities.
2.8
10/100 Ethernet PRU Controlled Ports
The Industrial EVM has two 10/100 Ethernet transceivers (TLK105L) interfaced to connectors J6 and J9.
These Ethernet transceivers are connected to the PRU0 and PRU1 units within the AM437x device. The
reset for the transceivers is driven by the board system reset, SYS_RESETn. A 25-MHz clock drives the
clock signal for the TLK105L.
NOTE:
The RJ-45 connectors used on the board have integrated magnetics that are configured in a
NIC configuration which does not support AutoMDIX. When designing a custom board based
on this schematic, be sure to verify whether an AutoMDIX, type RJ-45 connector, is required
for your design.
2.9
Gigabit Ethernet Port
The Industrial EVM has a one Gb (10/100/1000) Ethernet transceiver (KSZ9031RN) interfaced to
connector J4. This gigabit ethernet transceiver is connected to the RGMII 1 unit within the AM437x device.
The reset for the transceiver is driven by the board system reset SYS_RESETn. A 25-MHz clock drives
the clock signal for the KSZ9031RN.
NOTE:
The RJ-45 connectors used on the board have integrated magnetics that are configured in a
NIC configuration which does not support AutoMDIX. When designing a custom board based
on this schematic, be sure to verify whether an AutoMDIX, type RJ-45, connector is required
for your design.