BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 85

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(3) Description of the USB boot program operation
Note: In USB transfers, the maximum object size that can be transferred is 64 KB since the write size is set by wIndex
The boot program transfers data in Motorola S3 format sent from the PC to the internal
RAM. The user program starts operating after data transfer is completed. The start
address of the program is 0x0000_0000. Please refer to section 3.6.3 for details.
This function enables users to customize on-board programming control.
within the address range of 0x0000H to 0xFFFF.
a.
b.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. The PC checks the transfer result.
11. If the transfer results in failure, the boot program starts the error processing
1.
Operation procedure
Notes on the user program format (binary)
The PC checks the microcontroller information data.
Connect the USB cable.
Set both the AM0 and AM1 pins to 1 and reset the microcontroller.
After recognizing USB connection, the PC checks the information on the
connected device using the GET_DESCRIPTOR command.
The PC sends the microcontroller information command by command transfer
(vendor request).
Upon receiving the microcontroller information command, the boot program
prepares microcontroller information in ASCII code.
The PC sends the microcontroller transfer start command by command
transfer (vendor request). After the setup stage is completed, the PC transfers
the user program by bulk OUT transfer.
After the user program has been transferred, the PC waits for over two seconds
and then sends the user program transfer result command by command
transfer (vendor request).
Upon receiving the user program transfer result command, the boot program
prepares for transmission of the transfer result value.
routine and will not automatically recover from it. In this case, terminate the
device driver on the PC and retry from Step 2.
After receiving the checksum of a record, the boot program waits for the start
mark (0x53 for “S”) of the next record. Even if data other than 0x53 is
transmitted between records, it will be ignored.
TENTATIVE
TMPA900CM- 84
TMPA900CM
2009-10-14