AT83EC5123 ATMEL Corporation, AT83EC5123 Datasheet - Page 60

• Manufacturer Part Number: AT83EC5123
• Description: (AT8xx512x) Smart Card Reader ICs
• Manufacturer: ATMEL Corporation

Figure 33. Minimum Intervention from the USB Device Firmware
60
HOST
UFI
C51
IN Transactions:
HOST
UFI
C51
OUT Transactions:
AT8xC5122/23
OUT DATA0 (n Bytes)
IN
Endpoint FIFO write
NACK
ACK
IN
interrupt C51
DATA1
Endpoint FIFO read (n bytes)
OUT
DATA1
IN
NACK
DATA1
OUT
ACK
interrupt C51
DATA1
Endpoint FIFO write
ACK
4202B–SCR–07/03