GL423 Genesys Logic, GL423 Datasheet - Page 13

• Manufacturer Part Number: GL423
• Description: USB 2.0 +sd/mmc-controller Combo Solution
• Manufacturer: Genesys Logic

3.2.3 EPFIFO
3.2.3.1 Control FIFO
3.2.3.2 Interrupt FIFO 64-byte-depth FIFO of endpoint 3 for status interrupt.
3.2.3.3 Bulk In/Out FIFO
3.2.4 MHE
3.2.4.1 MIFs
3.2.4.2 MCFIFO
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Endpoint FIFO: it includes Control FIFO (FIFO0), interrupt FIFO (FIFO3), Bulk In/Out FIFO (BULKFIFO)
It can be in the TX mode or RX mode:
32-byte FIFO shared by Memory Stick, Memory Stick-PRO, SD/MMC MIF.
• It contains ping-pong FIFO (512 bytes each bank) for transmit/receive data continuously.
• It can be directly accessed by micro controller
• Support SIE won’t transmit data filled before micro controller check data integrity complete.
• It can be used to copy data block from source to destination in the same card or from one card to other
It contains 3 MIF (Media Interface), control and MCFIFO
• SD / MMC MIF
• Memory Stick MIF
• Memory Stick-PRO MIF
• Memory Stick and Memory Stick-PRO MIF can use MCFIFO as command FIFO.
• SD/MMC MIF use MCFIFO for command and response.
It is 64-byte FIFO, and it is used for endpoint 0 data transfer.
card.
FIFO of control endpoint 0.
GL422/GL423 USB 2.0 +SD/MMC-controller Combo Solution
Page 13