at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 683

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

37.5.2.9
37.5.2.10
37.5.2.11
6384B–ATARM–15-Dec-08
Transmit Data Cancellation
Endpoints Without Dual-Banks
Endpoints With Dual-Banks
Some endpoints have dual-banks whereas some endpoints have only one bank. The procedure
to cancel transmission data held in these banks is described below.
To see the organization of dual-bank availability refer to
There are two possibilities: In one case, TXPKTRDY field in UDP_CSR has already been set. In
the other instance, TXPKTRDY is not set.
There are two possibilities: In one case, TXPKTRDY field in UDP_CSR has already been set. In
the other instance, TXPKTRDY is not set.
• TXPKTRDY is not set:
• TXPKTRDY has already been set:
• TXPKTRDY is not set:
• TXPKTRDY has already been set:
– Reset the endpoint to clear the FIFO (pointers). (See,
– Clear TXPKTRDY so that no packet is ready to be sent
– Reset the endpoint to clear the FIFO (pointers). (See,
– Reset the endpoint to clear the FIFO (pointers). (See,
– Clear TXPKTRDY and read it back until actually read at 0.
– Set TXPKTRDY and read it back until actually read at 1.
– Clear TXPKTRDY so that no packet is ready to be sent.
– Reset the endpoint to clear the FIFO (pointers). (See,
Endpoint
Endpoint
Endpoint
Endpoint
Register”.)
Register”.)
Register”.)
Register”.)
AT91SAM9G20 Preliminary
Table 37-1 ”USB Endpoint
Section 37.6.9 ”UDP Reset
Section 37.6.9 ”UDP Reset
Section 37.6.9 ”UDP Reset
Section 37.6.9 ”UDP Reset
Description”.
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