...........continued
PIO
MPU Net Name Device Net Name
Function
PD21 PD21
ETH1_TXEN_PD21
Ethernet 10/100 transmit enable
EXT40_GPIO_PD21
RPi 40-pin connector GPIO
PD25 PD25
ETH1_RX0_PD25
Ethernet 10/100 receive data line 0
EXT40_GPIO_PD25
RPi 40-pin connector GPIO
PD26 PD26
ETH1_RX1_PD26
Ethernet 10/100 receive data line 1
EXT40_GPIO_PD26
RPi 40-pin connector GPIO
PD27 PD27
ETH1_RXER_PD27
Ethernet 10/100 receive error
EXT40_GPIO_PD27
RPi 40-pin connector GPIO
PD28 PD28
ETH1_MDC_PD28
Ethernet 10/100 management data clock
EXT40_PWM1_PD28
RPi 40-pin connector GPIO
PD29 PD29
ETH1_MDIO_PD29
Ethernet 10/100 management data input/output
EXT40_GPIO_PD29
RPi 40-pin connector GPIO
PD30 PD30
ETH1_TXCK_PD30
Ethernet 10/100 transmit clock or 50 MHz reference clock
EXT40_GPIO_PD30
RPi 40-pin connector GPIO
PE1
PE1
EXT40_SPI1_CE2_PE1
RPi 40-pin connector SPI chip enable 2
CAM_GPIO0_PE1
RPi CSI camera GPIO
PE2
PE2
EXT40_PWM0_PE2
RPi 40-pin connector PWM signal in PWM mode
CAM_GPIO1_PE2
RPi CSI camera GPIO
3.3
On-Board Memories
The SAMA7G5 MPU features a Universal DDR Memory Controller (UDDRC), a Quad Serial Peripheral Interface
(QSPI) and a Secure Digital MultiMedia Card Controller (SDMMC) to enable interfacing to a wide range of external
memories.
This section describes the memory devices mounted on the SAMA7G54-EK board:
• One 16-bit, 4-Gbit DDR3L SDRAM
• One 32-Gbit e.MMC NAND Flash
• One 1-Gbit Serial multi I/O Flash
• Two 2-Kb I
2
C serial EEPROMs with pre-programmed EUI-48 MAC ID
Additional memory can be added to the board by:
• installing an SD Card in the SD Card slot,
• using the USB ports.
Support depends on the OS driver support.
3.3.1
DDR3L Memory
One DDR3L memory (4-Gbit AS4C256M16D3LC-12BCNTR = 32 Mwords x 16 bits x 8 banks) is used as main
system memory, totaling 512 KBytes of SDRAM on the board. The memory bus is 16 bits wide and operates with a
frequency of up to 533 MHz.
SAMA7G54-EK
Function Blocks
©
2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS50003273A-page 35