MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 830

• 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)
26.15.8
830/995
Figure 279. TRDT max timing case
OTG programming model
The OTG_FS controller is an OTG device supporting HNP and SRP. When the core is
connected to an “A” plug, it is referred to as an A-device. When the core is connected to a
“B” plug it is referred to as a B-device. In Host mode, the OTG_FS controller turns off V
to conserve power. SRP is a method by which the B-device signals the A-device to turn on
V
detect either data-line pulsing or V
device negotiates and switches to host role. In Negotiated mode after HNP, the B-device
suspends the bus and reverts to the device role.
A-device session request protocol
The application must set the SRP-capable bit in the Core USB configuration register. This
enables the OTG_FS controller to detect SRP as an A-device.
dsynced_tkn_rcvd
BUS
srcbuf_rdata
srcbuf_push
power. A device must perform both data-line pulsing and V
spr_rdata
spr_read
spr_addr
tkn_rcvd
HCLK
PCLK
1
0ns
2
Doc ID 13902 Rev 9
BUS
50ns
pulsing for SRP. HNP is a method by which the B-
3
5 Clocks
A1
100ns
4
D1
5
BUS
150ns
pulsing, but a host can
D1
6
200ns
7
RM0008
ai15680
BUS
8