STEVAL-PCC010V2 STMicroelectronics, STEVAL-PCC010V2 Datasheet - Page 15

• Manufacturer Part Number: STEVAL-PCC010V2
• Description: BOARD EVAL FOR ST802RT1A
• Manufacturer: STMicroelectronics
• Series: -r

Specifications of STEVAL-PCC010V2

• Design Resources: STEVAL-PCC010V2 BOM STEVAL-PCC010V2 Schematic
• Main Purpose: Interface, Ethernet Controller (PHY and MAC)
• Embedded: Yes, MCU, 32-Bit
• Utilized Ic / Part: ST802RT1A, STM32F207
• Primary Attributes: 1 Port, 100BASE-TX/10BASE-T
• Secondary Attributes: MII, RMII
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-11465

UM1041
6
6.1
6.1.1
Configuration and functionality
This section describes configuration and functionality of the ST802RT1A Ethernet PHY
demonstration board and STM32F207 controller demonstration board.
Configuration and functionality- ST802RT1A Ethernet PHY
demonstration board
Please note that in this section jumper configuration “high” means that the jumper is placed
in the position closest to the top edge of the board and position “low” means that the jumper
is placed in the position closest to the bottom edge of the board, as depicted in
Figure 10. Jumper configuration
The ST802RT1A PHY uses many of the functional pins as strap options. The values of
these pins are sampled during hardware reset-power-up and are used to strap the device
into specific modes of operation. The ST802RT1A provides a simple strap option to
automatically configure some device modes with no device register configuration necessary.
All strap pins have a weak internal pull-up or pull-down. If the default strap value must be
changed, it should not be connected directly to V
should be used. The software reset and power-down through the power-down pin cannot be
used to change the strap configuration.
Auto-negotiation
Auto-negotiation is performed as part of the initial setup of the link, and allows the PHYs at
each end of a cable to advertise their capabilities (speed, PHY type, half or full duplex) and
to automatically select the operating mode for communication on the link. If auto-negotiation
is disabled, the chip stays at the speed that is selected by the strap pins. If partner speed is
the same, the link ON state is signaled otherwise no link state is signaled.
BOOT strap options
Doc ID 18370 Rev 1
CC
or GND, but an external 2.2 kΩ resistor
Configuration and functionality
Figure
10.
15/34