Flash Memory Erasing Mode (Operating Command: F0H) - Philips CEM2100/00 Service Manual

20.6.1 Flash Memory Erasing Mode (Operating command: F0H)

Table 20-7 shows the flash memory erasing mode.
Table 20-7 Flash Memory Erasing Mode
Transfer Byte
1st byte
2nd byte
3rd byte
4th byte
5th byte
6th byte
7th byte
8th byte
9th byte
10th byte
11th byte
BOOT
12th byte
ROM
13th byte
14th byte
15th byte
:
m'th byte
n'th - 2 byte
n'th - 1 byte
n'th byte
n'th + 1 byte
Note 1: "xxH × 3" indicates that the device enters the halt condition after transmitting 3 bytes of xxh.
Note 2: Refer to " 20.13 Specifying the Erasure Area ".
Note 3: Refer to " 20.8 Checksum (SUM) ".
Note 4: Refer to " 20.10 Passwords ".
Note 5: Do not transmit the password string for a blank product.
Note 6: When a password error occurs, T5CL8 stops UART communication and enters the halt mode. Therefore, when
a password error occurs, initialize
Note 7: If an error occurs during transfer of a password address or a password string, T5CL8 stops UART communica-
tion and enters the halt condition. Therefore, when a password error occurs, initialize
and reactivate the serial PROM mode.
Description of the flash memory erasing mode
1. The 1st through 4th bytes of the transmitted and received data contain the same data as in the flash
memory writing mode.
Transfer Data from the External
Controller to T5CL8
Matching data (5AH)
-
Baud rate change data (Table 20-4)
-
Operation command data (F0H)
-
Password count storage address bit
15 to 08 (Note 4, 5)
Password count storage address bit
07 to 00 (Note 4, 5)
Password comparison start address
bit 15 to 08 (Note 4, 5)
Password comparison start address
bit 07 to 00 (Note 4, 5)
Password string (Note 4, 5)
-
Erase area specification (Note 2)
-
-
(Wait for the next operation command
data)
T5CL8
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Transfer Data from T5CL8 to
Baud Rate
9600 bps - (Automatic baud rate adjustment)
9600 bps OK: Echo back data (5AH)
Error: No data transmitted
9600 bps -
9600 bps OK: Echo back data
Error: A1H × 3, A3H × 3, 62H × 3 (Note 1)
Modified baud rate -
Modified baud rate OK: Echo back data (F0H)
Error: A1H × 3, A3H × 3, 63H × 3 (Note 1)
Modified baud rate -
Modified baud rate OK: Nothing transmitted
Error: Nothing transmitted
Modified baud rate -
Modified baud rate OK: Nothing transmitted
Error: Nothing transmitted
Modified baud rate -
Modified baud rate OK: Nothing transmitted
Error: Nothing transmitted
Modified baud rate -
Modified baud rate OK: Nothing transmitted
Error: Nothing transmitted)
Modified baud rate -
Modified baud rate OK: Nothing transmitted
Error: Nothing transmitted
Modified baud rate -
Modified baud rate OK: Checksum (Upper byte) (Note 3)
Error: Nothing transmitted
OK: Checksum (Lower byte) (Note 3)
Modified baud rate
Error: Nothing transmitted
Modified baud rate -
by the pin and reactivate the serial PROM mode.
RESET
T5CL8
the External Controller
T5CL8
by the pin
RESET