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TMP86FS27FG Datasheet(PDF) 18 Page - Toshiba Semiconductor |
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TMP86FS27FG Datasheet(HTML) 18 Page - Toshiba Semiconductor |
18 / 32 page ![]() 86FS27-18 2007-08-07 TMP86FS27 2.6.3 Flash Memory Memory SUM Output Mode (Operation command: 90H) Table 2.6.3 shows flash memory SUM output mode process. Table 2.6.3 Flash Memory Memory SUM Output Process Note 1: “xxH × 3” denotes that operation stops after sending 3 bytes of xxH. For details, refer to 2.8 “Error Code”. Note 2: Refer to 2.9 “Checksum (SUM)” Description of flash memory SUM output mode 1. The process of the 1st byte through the 4th byte are the same as flash memory writing mode. 2. The receive data in the 5th byte is the flash memory SUM command data (90H) to calculate the entire flash memory. 3. When the 5th byte is one of the operation command data shown in Table 2.5.1, the device sends the echo back data which is the same as received operation command data (in this case, 90H). If the 5th byte data does not correspond to the operation command data, the device stops UART function after sending 3 bytes of operation command error code: (63H). 4. The 7th and the 8th bytes are the SUM value that is sent to the controller in order of the upper byte and the lower byte. For details on how to calculate the SUM, refer to 2.9 “Checksum (SUM)”. 5. After sending the SUM, the device waits for the next operation command data. Number of Bytes Transferred Transfer Data from External Controller to TMP86FS27 Baud Rate Transfer Data from TMP86FS27 to External Controller BOOT ROM 1st byte 2nd byte Matching data (5AH) − 9600 bps 9600 bps − (Baud rate auto set) OK: Echo back data (5AH) Error: Nothing transmitted 3rd byte 4th byte Baud rate modification data (See Table 2.4.1) − 9600 bps 9600 bps − OK: Echo back data Error: A1H × 3, A3H × 3, 62H × 3 (Note 1) 5th byte 6th byte Operation command data (90H) − Changed new baud rate Changed new baud rate − OK: Echo back data (90H) Error: A1H × 3, A3H × 3, 63H × 3 (Note 1) 7th byte − Changed new baud rate OK: SUM (High) (Note 2) Error: Nothing transmitted 8th byte − Changed new baud rate OK: SUM (Low) (Note 2) Error: Nothing transmitted 9th byte (Wait for the next operation) (Command data) Changed new baud rate − |
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