We will learn about WIZnet W7500 system and memory in this chapter.
Specifically, We will learn about WIZnet W7500 system Architecture and system configuration controller for WIZnet W7500 system part.
We will also learn about WIZnet W7500 memory organization and memory map for WIZnet W7500 memory part.
Main system consists of:
- Two masters:
- Cortex-M0 core
- uDMAC(PL230, 60channel)
- Ten slaves
- Internal BOOT ROM
- Internal SRAM
- Internal Flash Memory
- Two AHB2APB bridge which connects all APB peripherals
- Four AHB dedicated to 16-bit GPIOs
- TCPIP Hardware core
AHB-Lite BUS – This bus connects the two masters (Cortex-M0 and uDMAC) and ten AHB slaves. Two APB BUSs – These buses connect Seventeen APB peripherals (Watchdog, two dual timers, pwm, two UARTs, simple UART, two I2Cs, two SSPs, random number generator, real time clock, 12bits analog digital converter, clock controller, IO configuration, PAD MUX controller)
Program memory, data memory, registers and I/O ports are organized within the same linear 4-Gbyte address space. The bytes are coded in memory in Little Endian format. The lowest numbered byte in a word is considered the word’s least significant byte and the highest numbered byte the most significant.
System Configuration Controller (SYSCFG)
Main purposes of the system configuration controller are the following
- Control of the memory remap feature
- The ability to enable an automatic reset if the system locks up
- Information about the cause of the last reset
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