MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 768

• Manufacturer Part Number: MCBSTM32EXL
• Description: BOARD EVALUATION FOR STM32F103ZE
• Manufacturer: Keil

Specifications of MCBSTM32EXL

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

USB on-the-go full-speed (OTG_FS)
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Bits 25:22 Reserved
Bits 19:18 EPTYP: Endpoint type
Bit 30 EPDIS: Endpoint disable
Bit 29 SODDFRM: Set odd frame
Bit 28 SD0PID: Set DATA0 PID
Bit 27 SNAK: Set NAK
Bit 26 CNAK: Clear NAK
Bit 21 STALL: STALL handshake
Bit 20 SNPM: Snoop mode
The application sets this bit to stop transmitting/receiving data on an endpoint, even before
the transfer for that endpoint is complete. The application must wait for the Endpoint disabled
interrupt before treating the endpoint as disabled. The core clears this bit before setting the
Endpoint disabled interrupt. The application must set this bit only if Endpoint enable is already
set for this endpoint.
Applies to isochronous OUT endpoints only.
Writing to this field sets the Even/Odd frame (EONUM) field to odd frame.
SEVNFRM: Set even frame
A write to this bit sets the NAK bit for the endpoint.
Using this bit, the application can control the transmission of NAK handshakes on an
endpoint. The core can also set this bit for OUT endpoints on a Transfer Completed interrupt,
or after a SETUP is received on the endpoint.
A write to this bit clears the NAK bit for the endpoint.
Applies to non-control, non-isochronous OUT endpoints only (access type is rw).
Applies to control endpoints only (access type is rs).
This bit configures the endpoint to Snoop mode. In Snoop mode, the core does not check the
correctness of OUT packets before transferring them to application memory.
This is the transfer type supported by this logical endpoint.
Applies to interrupt/bulk OUT endpoints only.
Writing to this field sets the endpoint data PID (DPID) field in this register to DATA0.
Applies to isochronous OUT endpoints only.
Writing to this field sets the Even/Odd frame (EONUM) field to even frame.
The application sets this bit to stall all tokens from the USB host to this endpoint. If a NAK
bit, Global IN NAK, or Global OUT NAK is set along with this bit, the STALL bit takes
priority. Only the application can clear this bit, never the core.
The application can only set this bit, and the core clears it, when a SETUP token is received
for this endpoint. If a NAK bit, Global IN NAK, or Global OUT NAK is set along with this bit,
the STALL bit takes priority. Irrespective of this bit’s setting, the core always responds to
SETUP data packets with an ACK handshake.
00: Control
01: Isochronous
10: Bulk
11: Interrupt
Doc ID 13902 Rev 9
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