MCBSTM32EXL Keil, MCBSTM32EXL Datasheet - Page 698

• 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)
26.4
26.4.1
26.4.2
698/995
OTG dual role device (DRD)
Figure 261. OTG A-B device connection
1. External voltage regulator only needed when building a V
2. ST20x2 only needed if the application has to to support V
3. V
ID line detection
The Host or Peripheral (the default) role is assumed depending on the ID input pin. The ID
line status is determined on plugging in the USB, depending on which side of the USB cable
is connected to the micro-AB receptacle.
●
●
HNP dual role device
The HNP capable bit in the Global USB configuration register (HNPCAP bit in OTG_FS_
GUSBCFG) enables the OTG_FS Core to dynamically change its role from A-Host to A-
peripheral and vice-versa, or from B-Peripheral to B-Host and vice-versa according to the
host negotiation protocol (HNP). The current device status can be read by the combined
values of the Connector ID Status bit in the Global OTG control and status register (CIDSTS
bit in OTG_FS_GOTGCTL) and the current mode of operation bit in the global interrupt and
status register (CMOD bit in OTG_FS_GINTSTS).
be used if 5 V are available on the application board.
DD
If the B-side of the USB cable is connected with a floating ID wire, the integrated pull-up
resistor detects a high ID level and the default Peripheral role is confirmed. In this
configuration the OTG_FS complies with the standard FSM described by section 6.8.2:
On-The-Go B-Device of the On-The-Go Specification Rev1.3 supplement to the
USB2.0.
If the A-side of the USB cable is connected with a grounded ID, the OTG_FS issues an
ID line status change interrupt (CIDSCHG bit in OTG_FS_GINTSTS) for host software
initialization, and automatically switches to the Host role. In this configuration the
OTG_FS complies with the standard FSM described by section 6.8.1: On-The-Go A-
Device of the On-The-Go Specification Rev1.3 supplement to the USB2.0.
range is between 2 V and 3.6 V.
OSC_IN
OSC_OUT
STM32F105xx
STM32F107xx
GPIO+IRQ
GPIO
PA11
PA12
PA10
Doc ID 13902 Rev 9
PA9
V
DD
(3)
Overcurrent
EN
5 V to V
voltage regulator (1)
ST20x2
Current-limited
power distribution
switch
BUS
BUS
V
(2)
DD
DD
powered device
powered devices. A basic power switch can
(2)
5 V Pwr
VBUS
V
DP
DM
ID
SS
ai17115
RM0008