RSK+RZA1H
5. User Circuitry
R20UT3007EG0200 Rev. 2.00
Page 23 of 53
May 17, 2015
5.12
Ethernet & EEPROM
This RSK+ board is fitted with an Ethernet connection. The connections from the Ethernet driver IC, IC12, are
detailed in Table 5.13. Refer to the RZ/A1H board schematics for further information.
Signal
MCU
Port
Pin
ET_MDC
P5_9*
A7
ET_MDIO
P3_3 (**Multiplexed)
AA6
ET_IRQ
P4_14 IRQ6
G19
ET_RXCLK
P3_4 (**Multiplexed)
Y5
ET_RXD3
P2_11 (**Multiplexed)
E19
ET_RXD2
P2_10 (**Multiplexed)
B22
ET_RXD1
P2_9 (**Multiplexed)
C21
ET_RXD0
P2_8 (**Multiplexed)
D20
ET_RXDV
P3_6 (**Multiplexed)
AB3
ET_RXER
P3_5 (**Multiplexed)
AA4
ET_TXEN
P2_2 (**Multiplexed)
F21
ET_TXD0
P2_4 (**Multiplexed)
F19
ET_TXD1
P2_5 (**Multiplexed)
E22
ET_TXD2
P2_6 (**Multiplexed)
E20
ET_TXD3
P2_7 (**Multiplexed)
C22
ET_TXCLK
P2_0 (**Multiplexed)
L21
ET_TXER
P2_1 (**Multiplexed)
K22
ET_CRS
P2_3 (**Multiplexed)
G20
RESET2_N
Connected to reset circuit
ET_COL
P1_14
AA19
*This pin is connected to the MCU via link R105. Refer to section 6.1.8 for further
details.
**These pins are connected to the MCU via a multiplexer IC IC29. Set Signal
PX1_EN1 High to connect these signals to the MCU.
See section 5.20 for further details of the multiplexing on the RSK+ board.
Table 5.13: Ethernet Connection
A 2KByte EEPROM is fitted in order to store the MAC address for the Ethernet connection. This can be
accessed via I
2
C channel 3, with address 0xA0. Connection details are described in Table 5.14 below.
I
2
C Signal
Function
MCU
Port
Pin
SDA3
Serial Data Line
P1_7
B16
SCL3
Clock Line
P1_6
A17
Table 5.14: EEPROM Connection on I
2
C Channel 3
There is an eight-way configuration DIP switch, SW4, which is used to determine Ethernet settings on the
RSK+ board. Refer to section 6.3 for further details.
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