ROM Code Generation Flow
B-7Submitting ROM Codes to TI
-
“Customer-OTP” area, including the D-number. Addresses
0x3D7BFE and 0x3D7BFF, which are eventually used to store
the checksum are not used in the computation.
- TI-OTP area containing TI test code. Addresses 0x3D7FFE and
0x3D7FFF, which are eventually used to store the checksum are
not
used in the computation.
- “Customer ROM” area, including the ROM entry-point and CSM
passwords. Addresses 0x3F7FF4 and 0x3F7FF5, which are
eventually used to store the checksum are not used in the com-
putation.
The computed checksum is written into the corresponding locations
(see Table B−1). The image of the ROM is now ready in the PC
memory.
Table B−1. Checksum Computation Memory Locations
Address Content
0x3D7800
….
0x3D7BFB
1K OTP for customer code. (referred to in this document as Customer-OTP)
0x3D7BFC
†
Low-word of D-number
0x3D7BFD
†
High-word of D-number
0x3D7BFE
†
Low-word of checksum (for Customer-OTP)
0x3D7BFF
†
High-word of checksum (for Customer-OTP)
0x3D7C00
….
0x3D7FFD
1K OTP for TI test code. (referred to in this document as TI-OTP)
0x3D7FFE Low-word of checksum (for TI-OTP)
0x3D7FFF High-word of checksum (for TI-OTP)
0x3D8000
‡
….
0x3F7FF1
Start address for customer code in ROM (referred to in this document as Customer-
ROM)
End address for customer code in ROM
0x3F7FF2
†
Low-word of D-number
0x3F7FF3
†
High-word of D-number
0x3F7FF4
†
Low-word of checksum (for Customer-ROM)
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