RSK+RZA1H
5. User Circuitry
R20UT3007EG0200 Rev. 2.00
Page 32 of 53
May 17, 2015
5.20
Pin Multiplexing
The RSK+ uses multiplexing on various channels, in order to increase the amount of available I/O. Table 5.22,
Table 5.23 and Table 5.24 describe the signals being multiplexed and the signals that control them.
MCU
Signal Routed to MCU
Port
Pin
Signal
PX1_EN1* = High
PX1_EN1* = Low
P2_0
L21
P2_0_ETTXCLK
ET_TXCLK
P2_0_IO0
P2_1
K22
P2_1_ETTXER
ET_TXER
P2_1_IO1
P2_2
F21
P2_2_ETTXEN
ET_TXEN
P2_1_IO2
P2_3
G20
P2_3_ETCRS
ET_CRS
P2_1_IO3
P2_4
F19
P2_4_ETTXD0
ET_TXD0
P2_1_IO4
P2_5
E22
P2_5_ETTXD1
ET_TXD1
P2_1_IO5
P2_6
E20
P2_6_ETTXD2
ET_TXD2
P2_1_IO6
P2_7
C22
P2_7_ETTXD3
ET_TXD3
P2_1_IO7
P2_8
D20
P2_8_ETTRXD0_RSPCK4
ET_RXD0
RSPCK4
P2_9
C21
P2_9_ETRXD1_SSL40
ET_RXD1
SSL40
P2_10
B22
P2_10_ETRXD2_MOSI4
ET_RXD2
MOSI4
P2_11
E19
P2_11_ETRXD3_MISO4
ET_RXD3
MISO4
P3_3
AA6
P3_3_ETMDIO_SCICTS1
ET_MDIO
SIM_RESET
P3_4
Y5
P3_4_ETRXCLK_SCISCK0
ET_RXCLK
SIM_CLK
P3_5
AA4
P3_5_ETRXER_SCITXD0
ET_RXER
SIM_TXD
P3_6
AB3
P3_6_ETRXDV_SCIRXD0
ET_RXDV
SIM_RXD
*PX1_EN1 is connected to the MCU via port expander IC35. See section 5.5 for further details.
Table 5.22: Multiplexing for Signal PX1_EN1, IC29
MCU
Signal Routed to MCU
Port
Pin
Signal
PX1_EN3* = High
PX1_EN3* = Low
P4_4
M21
P4_4_SSISCK0_PWM2E
PWM2E
SSISCK0
P4_5
M20
P4_5_SSIWS0_PWM2F
PWM2F
SSIWS0
P4_6
L22
P4_6_SSIRXD0_PWM2G
PWM2G
SSIRXD0
P4_7
L20
P4_7_SSITXD0_PWM2H
PWM2H
SSITXD0
*PX1_EN3 is connected to the MCU via port expander IC35. See section 5.5 for further details.
Table 5.23: Multiplexing for Signal PX1_EN3, IC30
MCU
Signal Routed to MCU
Port
Pin
Signal
PX1_EN7* = High
PX1_EN7* = Low
P8_10
W2
P8_10_A18_SGOUT0
SGOUT0
A18
P8_11
W3
P8_11_A19_SGOUT1
SGOUT1
A19
P8_12
Y1
P8_12_A20_SGOUT2
SGOUT2
A20
P8_13
V4
P8_13_A21_SGOUT3
SGOUT3
A21
*PX1_EN7 is connected to the MCU via port expander IC35. See section 5.5 for further details.
Table 5.24: Multiplexing for Signal PX1_EN7, IC20
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