D i d o H a r d w a r e M a n u a l
v . 1 . 0 . 5
Pin name
Conn.
Pin
Function
Notes
SD0_DAT[1]
J1.129 Data bit 1
Functions as an IRQ
input for 1-bit SD
mode.
SD0_DAT[2]
J1.102 Data bit 2
Functions as a Read
Wait input for 1-bit
SD mode.
SD0_DAT[3]
J1.104 Data bit 3
7.8.2
MMC/SD/SDIO1
MMC/SD1 can be configured as 1-bit, 4-bit or 8-bit mode.
Please note that 8-bit mode can be used only when MMC/SD0
is not enabled.
The following table describes the interface signals:
Pin name
Conn.
Pin
Function
Notes
SD1_CLK
J1.137 Clock output
SD1_CMD
J1.135 Command output Also available as
alternative function
on pin J1.130.
SD1_DAT[0]
J1.119 Data bit 0
Functions as single
data bit for 1-bit SD
mode.
SD1_DAT[1]
J1.121 Data bit 1
Functions as an IRQ
input for 1-bit SD
mode.
SD1_DAT[2]
J1.123 Data bit 2
Functions as a Read
Wait input for 1-bit
SD mode.
SD1_DAT[3]
J1.125 Data bit 3
SD1_DAT[4]
J1.127 Data bit 4
SD1_DAT[5]
J1.129 Data bit 5
SD1_DAT[6]
J1.102 Data bit 6
SD1_DAT[7]
J1.104 Data bit 7
August, 2014
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