3.2.7.2 SPI Distribution

The SAMA7D65 Curiosity Pro features three SPIs. The following schematic shows the SPI distribution.

Figure 3-19. SPI Distribution

The serial clock and data lines are shared by the five connected peripherals. Each peripheral has its own dedicated chip select line, as detailed in the table below.

Table 3-5. SPI Chip Select Peripheral Distribution

Peripheral

Interface

Chip Select Signal

PIO

M.2 module

FLEXCOM4

M2_WIFI_IO0_0.M2_WIFI_CS

PA14

mikroBUS2

FLEXCOM4

MBUS1_0.MBUS_CS

PA14

mikroBUS1

FLEXCOM4

MBUS0_0.MBUS_CS

PA15

SODIMM GMAC

FLEXCOM4

GMAC0_0.CS

PA20

RPi connector

FLEXCOM4

RPI0_0.NPCS0

PA14

RPi connector

FLEXCOM4

RPI0_0.NPCS1

PA20

USB-C controller

FLEXCOM4

USBIO-C_A_0.CS

PA14

Table 3-6. FLEXCOM/PIO/Resistor/Net Correspondence
FLEXCOMPIO (if Direct Connection)ResistorNet after the Resistor
FLEXCOM0_IO0PC07R123LVDS_IO0_0.LVDS_TWD
– –R124MIPI_IO0_0.MIPI_TWD
– –R125MBUS0_0.MBUS_TWD
– –R126MBUS1_0.MBUS_TWD
– –R127RPI0_0.TWD
– –R128M2_WIFI_IO0_0.M2_WIFI_TWD
FLEXCOM0_IO1PC06R113LVDS_IO0_0.LVDS_TWCK
– –R114MIPI_IO0_0.MIPI_TWCK
– –R115MBUS0_0.MBUS_TWCK
– –R116MBUS1_0.MBUS_TWCK
– –R118RPI0_0.TWCK
– –R119M2_WIFI_IO0_0.M2_WIFI_TWCK
FLEXCOM10_IO0PB20R106PMIC_0.TWD
– –R107PAC19340_0.TWD0
– –R108EEPROM0_0.TWD
– –R109GMAC0_0.TWD
FLEXCOM10_IO1PB19R100PMIC_0.TWCK
– –R101PAC19340_0.TWCK0
– –R103EEPROM0_0.TWCK
– –R104GMAC0_0.TWCK
FLEXCOM4_IO0 –R31PA18
– –R329USBIO-C_A_0.MOSI
– –R74MBUS0_0.MBUS_MOSI
– –R75MBUS1_0.MBUS_MOSI
– –R76RPI0_0.MOSI
– –R77GMAC0_0.MOSI
FLEXCOM4_IO1PA17R330USBIO-C_A_0.MISO
– –R79MBUS0_0.MBUS_MISO
– –R80MBUS1_0.MBUS_MISO
– –R81RPI0_0.MISO
– –R82GMAC0_0.MISO
FLEXCOM4_IO2PA16R331USBIO-C_A_0.SCK
– –R84MBUS0_0.MBUS_SCK
– –R85MBUS1_0.MBUS_SCK
– –R86RPI0_0.SCK
– –R87GMAC0_0.SCK
FLEXCOM4_IO3PA15R89MBUS0_0.MBUS_CS
FLEXCOM4_IO4PA14R1101USBIO-C_A_0.CS
– –R91MBUS1_0.MBUS_CS
FLEXCOM4_IO5 –R33PA19
– –R93RPI0_0.NPCS0
– –R94M2_WIFI_IO0_0.M2_WIFI_CS
FLEXCOM4_IO6PA20R96RPI0_0.NPCS1
– –R97GMAC0_0.CS
Note:
  1. Not populated.