Texas Instruments LaunchPad AM243 Series User Manual page 30

Hardware Description
4.6.2 Board ID EEPROM
The AM243x LaunchPad has a 1 Mbit I2C EEPROM for board ID information. The board ID memory is
configured to respond to the I2C address 0X50 by connecting the address pins (A0, A1) to ground and
programmed with the header description. This EEPROM (AT24CM01-XHD-T from Microchip) is interfaced to the
I2C0 port of the SoC. When the WP pin is connected directly to VCC then all write operations to the protected
memory are inhibited. The mounted resistor is shown inside of the red box in
the WP pin can be left floating by isolating the resistor shown in the red box (R89).
Header Field Name
EE3355AA MAGIC
TYPE
BRD_INFO TYPE
Length
Board_Name
Design_Rev
PROC_Nbr
Variant
PCB_Rev
SCHBOM_Rev
SWR_Rev
VendorID
Build_Week
Build_Year
30 AM243x LaunchPad™ Development Kit User's Guide
Figure 4-8. Board ID EEPROM
Table 4-12. Board ID Memory Header Information
# Bytes Offset
4 0000
1 0004
2 0005
1 0007
2 0008
16 000A
2 001A
4 001C
2 0020
2 0022
2 0024
2 0026
2 0028
2 002A
2 002C
Copyright © 2022 Texas Instruments Incorporated
Figure 4-8. For normal operation,
Field Value Field Type
0xEE3355AA HEX
0x01 HEX
F7 HEX
0x10 HEX
2E HEX
AM243-LPEVM CHAR
E2 CHAR
109 CHAR
01 CHAR
E2 CHAR
00 CHAR
01 CHAR
01 CHAR
20 CHAR
21 CHAR
SPRUJ12B – AUGUST 2021 – REVISED OCTOBER 2022
www.ti.com
Description
Magic Number
Fixed length and variable
position board ID header
Size of payload bytes following
this field including end_list byte
Board Info header identifier
offset to next header
PROC number from central
EVM
Used for schematic revision
extension - A, B, C etc.
Schematic/BoM revision will be
Design_Rev+SCHBOM_Rev
1 is first software release
1 is Mistral
Filled in by Mistral
2021
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