Renesas RH850 Series, Руководство пользователя, Страница: 32 / 67

RH850/U2A 292pin 6. Other Circuitry
R20UT4970ED0101 Rev.1.01 Page 32 of 67
July 08, 2022
If a 2-wire connection should be used connector CN6 has to be assembled with the Würth
block connector included in the delivery.
In order to use CN6 it is necessary to populate the resistors R83 and R84 with 0
Ω resistors.
Please refer to
Figure 6.2 Ethernet connector CN6
for the placement of the connector.
Notes
1. For ETNBx initial setup please refer to the device UM. For ETNB1 operation the ETNB1SGCLKSEL
register must be set to ETNB1SGCLKSEL=0x01 to select the Internal MOSC clock of 20MHz.
For an internal MOSC clock of 20MHz the crystal X1 has to be replaced by the 20MHz crystal included in
the package.
For package content please refer to
Table 1.1 Package Components for the Y-RH850-U2A-292PIN-
PB-T1-V2
2. The signals of the device's Fast Ethernet (R)MII interface (ETNB0) are available on the Main Board
connectors. Thus, ETNB0 can control an Ethernet PHY on the Main Board.
3. Alternatively, ETNB1 can also be used to operate the Main Board's 100 MB Ethernet PHY. In this case
the ETNB1 Fast Ethernet mode is selected by Option Bytes settings and the pin multiplexing needs to be
configured accordingly.
Refer to
7.6 Ethernet Connector CN6 and CN17
for the CN6 and CN17 pin assignment.
Figure 6.2 Ethernet connector CN6