MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 762
MCBSTM32EXL
Manufacturer Part Number
MCBSTM32EXL
Description
BOARD EVALUATION FOR STM32F103ZE
Manufacturer
Keil
Specifications of MCBSTM32EXL
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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USB on-the-go full-speed (OTG_FS)
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31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
rs
r
Bits 29:28 Reserved
Bits 25:22 TXFNUM: TxFIFO number
Bits 19:18 EPTYP: Endpoint type
OTG_FS device control IN endpoint 0 control register (OTG_FS_DIEPCTL0)
Address offset: 0x900
Reset value: 0x0000 0000
This section describes the device control IN endpoint 0 control register. Nonzero control
endpoints use registers for endpoints 1–15.
Bit 31 EPENA: Endpoint enable
Bit 30 EPDIS: Endpoint disable
Bit 27 SNAK: Set NAK
Bit 26 CNAK: Clear NAK
Bit 21 STALL: STALL handshake
Bit 20 Reserved
w
w
The application sets this bit to start transmitting data on the endpoint 0.
The core clears this bit before setting any of the following interrupts on this endpoint:
– Endpoint disabled
– Transfer completed
The application sets this bit to stop transmitting 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.
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 an endpoint after a SETUP packet is received on that
endpoint.
A write to this bit clears the NAK bit for the endpoint.
This value is set to the FIFO number that is assigned to IN endpoint 0.
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, a Global IN NAK or Global OUT NAK is set along with this bit, the
STALL bit takes priority.
Hardcoded to ‘00’ for control.
rw rw rw rw
TXFNUM
rs
EPTYP
r
Doc ID 13902 Rev 9
r
r
r
9
Reserved
8
7
6
5
4
3
RM0008
2
MPSIZ
rw rw
1
0
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