Functional Block Description
5
SPRUII2 – November 2017
Copyright © 2017, Texas Instruments Incorporated
AM437x IDK Evaluation Hardware
2.5
Configuration and Setup
2.5.1
Boot Configuration
Various boot configurations can be set using the pullup and pulldown resistor combinations provided on
the SYSBOOT pins (LCD_D0:15, LCD_VSYNC, LCD_HSYNC, and LCD_EN). Boot configuration pins are
latched upon deassertion of the PORz pin. The default settings for the AM437x IDK EVM 1.3A are
000_0100_0000_0001_1000b. This corresponds to a boot sequence of the following:
1. MMC0
2. USB_MS (USB1)
3. USB_CL (USB0)
4. QSPI
See the GP EVM schematic for more details. See the AM437x TRM and data sheet for the definitions of
each of the sysboot signals.
2.5.2
I
2
C Address Assignments
In the AM437X Industrial EVM, each separate board has an I
2
C ID memory that contains the details of the
identity of that board such as its configuration.
provides information on the I
2
C address
assignments.
Table 3. AM437X Industrial EVM I
2
C Bus Addresses
AM437x Industrial EVM Function
AM437x I2C Port
Address
Baseboard ID memory
I2C0
0x50
TPS62362 (buck regulator)
I2C0
0x60
Clock synthesizer
I2C0
0x65
LED driver
I2C2
0x60
2.5.3
I
2
C ID Memory
The Industrial EVM has a dedicated I
2
C EEPROM which contains specific identity and configuration
information for that board. In addition, there is available space in each memory for user-specific
configuration information. The part number of the memory device is CAT24C256WI-G.
Table 4. AM437x Industrial EVM EEPROM Data
Name
Size (bytes)
Contents
Header
4
MSB 0xEE3355AA LSB
Board Name
8
Name for the board in ASCII "A33515BB" = AM437x Industrial EVM
Version
4
Hardware version code for the board in ASCII "1.2A" = rev. 01.2A
Serial Number
12
Serial number of the board. This is a 12 character string, WWYY4P16nnnn,
where:
• WW = 2 digit week of the year of production
• YY = 2 digit year of production
• nnnn = incrementing board number
Configuration
32
Codes to show the configuration setup on this board. For the available
EVMs supported, the following codes are used:
• ASCII "SKU#01" = base board for gen purpose EVM
• ASCII "SKU#02" = base board for industrial motor control EVM
Remaining 26 bytes are reserved
Ethernet MAC Address 0
6
MAC Address for AM437x Ethernet MAC 1
Ethernet MAC Address 1
6
MAC Address for AM437x Ethernet MAC 2 or PRU 0
Ethernet MAC Address 2
6
MAC Address for AM437x PRU 1 (if used)
Available
32702
Available space for other nonvolatile codes and data
