TMP92FD54AI datasheet(52/84 Pages) TOSHIBA

52 / 84 page

2006-01-27

92FD54AI-52

TMP92FD54AI

(7) Boot program general flowchart

Figure 4.3.6 shows an overall flowchart for the boot program.

Figure 4.3.6 Overall flowchart for boot program

Initialize

Single boot

program starts

Enter SIO Operation

Mode data

Prepare to enter

operation command

ACK response data

← ACK response data &

UART

Receive routine Enter

operation command data

Received

normally

Receive

error?

RAM

transfer?

ACK response data

← received data (10H)

Transmission routine

(Send 10H:OK)

YES (10h)

RAM transfer

processing

Processed

normally?

Jump to RAM

Processed normally

ACK response data

← ACK response data

0x08

Transmission routine

(Send x8H:

Receive error)

SUM?

Operation

command error

YES (20h)

ACK response data

← Received data (20H)

ACK response data

← ACK response data | 0x01

Transmission routine

(Send 20H:OK)

Transmission routine

(Send x1H: Command error)

SUM processing

Error

Product

information read?

YES (30h)

ACK response data

← Received data (30H)

Transmission routine

(Send 30H: OK)

Product Information

Read processing

Baud rate

setting?

Set UART Mode and

set baud rate

ACK response data

← received data (86HUART)

(Send 86H)

Normal response

Stop operation

Cannot be set

Can be set

Erase?

YES (40h)

ACK response data

← Received data (40H)

Transmission routine

(Send 40H: OK)

Auto Chip ERASE &

UnProtect processing

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