W3100A Datasheet, PDF (24/63 Pages) List of Unclassifed Manufacturers – i2Chip W3100A

execute ‘write’. In order to verify the active status of Tx data buffer and Rx data buffer, MCU can execute
both write and read by setting the memory test mode (setting up of C1_CR memory test bit). In memory
test mode, however, W3100A cannot execute proper transmission and reception of data. Memory test mode
must be terminated for normal operation of W3100A.
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