tmp19a43fd TOSHIBA Semiconductor CORPORATION, tmp19a43fd Datasheet - Page 36

• Manufacturer Part Number: tmp19a43fd
• Description: 32-bit Risc Microprocessor
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Note 1: In I/O Interface mode, the baud rate for the transfers of the first and second bytes must be 1/16 of the desired baud
Note 2: In case of any negative acknowledge, the boot program returns to a state in which it waits for a command code

Boot ROM 61st byte



3.3.5
rate.
(3rd byte). In I/O Interface mode, if a communication error occurs, a negative acknowledge does not occur.
57th byte
thru
60th byte
thru
64th byte
65th byte
66th byte
67th byte
Overview of the Boot Program Commands
program offers these three commands, the details of which are provided on the following subsections.
Table 3.5 Transfer Format for the Show Product Information Command (2/2)
Byte
When Single Boot mode is selected, the boot program is automatically executed on startup. The boot
x RAM Transfer command
x Show Flash Memory Sum command
x Show Product Information command
The RAM Transfer command stores program code transferred from a host controller to the on-
chip RAM and executes the program once the transfer is successfully completed. The
maximum program size is 36 kbytes. The RAM storage start address must be within the range.
The RAM Transfer command can be used to download a flash programming routine of your
own; this provides the ability to control on-board programming of the flash memory in a
unique manner. The programming routine must utilize the flash memory command sequences
described in Section 3.6.17
Before initiating a transfer, the RAM Transfer command checks a password sequence coming
from the controller against that stored in the flash memory. If they do not match, the RAM
Transfer command aborts.
Once the RAM Transfer command is complete, the whole on-chip RAM is accessible.
The Show Flash Memory Sum command adds the contents of the 512 kbytes of the flash
memory together. The boot program does not provide a command to read out the contents of
the flash memory. Instead, the Flash Memory Sum command can be used for software revision
management.
The Show Product Information command provides the product name, on-chip memory
configuration and the like. This command also reads out the contents of the flash memory
locations at addresses 0x0000_03F0 through 0x0000_03F3. In addition to the Show Flash
Memory Sum command, these locations can be used for software revision management.
Data Transferred from the Controller
(Wait for the next command code.)
to the TMP19A43FDXBG
TMP19A43 (rev2.0)3-22




Baud Rate
Start address of a group of the same-size
flash blocks (4 bytes)
00H, 00H, 00H and 00H from the 57th byte
Size (in halfwords) of the same-size flash
blocks (4 bytes)
00H, 00H, 01H and 00H from the 61st byte
Number of flash blocks of the same size
(1 byte) 04H
Checksum value for bytes 5 to 65
TMP19A43FDXBG to the Controller
Data Transferred from the
Flash Memory Operation
TMP19A43