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XMC-6VLX
USER’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 43 - http://www.acromag.com
- 43 -
www.acromag.com
Flash Start Write (Write Only) – (BAR0 + 0x30020C)
This write only register is used to initiate the write of a 16-bit data value to
the flash chip. A Flash Start Write command is executed by writing logic 1 to
bit-0 of this register at base address plus 0x30020C. Prior to issuing of a
Flash Start Write the Flash Data and Address registers must be set with the
desired data and address to be written. See the Flash Data and Address
registers at base address plus 0x300214 and 0x300218.
Issuing a Flash Start Write will automatically increment this address after the
previously issued Flash Write has completed. Thus, the address will not
need to be set prior to issuing the next Flash Start Write if consecutive
addresses are to be written.
Flash Erase Block (Write Only) – (BAR0 + 0x300210)
This write only register is used to erase the contents of the addressed flash
block. A flash bit cannot be programmed from logic 0 to logic 1. Only an
erase block operation can convert logic 0 back to logic 1.
Prior to
reprogramming of the flash chip a flash erase block command must be
performed.
A flash erase block command is executed by writing logic 1 to bit-0 of this
register at base address plus 0x300210. Verify that the flash chip is not busy
from a previous operation before beginning a new operation. This is
accomplished by reading the flash status register.
Any other flash commands written to the flash chip during execution of the
flash erase block operation will be ignored. Note that a hardware reset
during the sector erase operation will immediately terminate the operation.
Flash Data Register (Read/Write) – (BAR0 + 0x300214)
This read/write register holds the 16-bit data which is sent to the flash chip
upon issuing of a flash start write command.
Flash Address (Read/Write) – (BAR0 + 0x300218)
This read/write register holds the address to which the flash chip is written
upon issue of a flash start write command.
Содержание XMC-6VLX Series
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