A523

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A523
A523.jpg
Manufacturer Allwinner
Process 22 nm
CPU Octa-Core ARM [email protected] big.LITTLE + E906 RISC-V@200MHz
Memory DDR3 LPDDR3 DDR4 LPDDR4 LPDDR4X 32bit@2400M
GPU Mali G57 MC1 2EE
Connectivity
Video 1x RGB, 2x MIPI-DSI, 1x Dual-LVDS, 1x eDP1.3, Up to 2560x1600@60Hz, HDMI 2.0 on A527/T527
Network 1 x Ethernet GMAC 100M/1000M, 2nd GMAC on A527/T527
Storage MMC, eMMC 5.1, SPI Flash
USB 1 x USB3.0, 2 x USB2.0
Other 1 x PCIE 2.1 1lane
Release Date 2023

Overview

The Allwinner A523 (sun55iw3) SoC features two quad-core Arm Cortex-A55 CPU clusters (for a total of eight cores), a Arm Mali-G57 MC1-2EE GPU, and a XuanTie E906 RISC-V management core. It is mainly targeted at tablet computers, though PCIe, USB 3.0, eDP and a Gigabit Ethernet MAC open up more use cases.

The A527, T527 and H728 SoCs use the same die, but expose more pins, used for instance for a second Gigabit MAC and an HDMI port.

The USB 3.0 controller and the single lane PCIe 2.1 controller share the output pins, via a combo-PHY, so cannot be used at the same time.

A523 SoC Features

  • CPU
    • ARM Cortex-A55 r2p0 Octa-Core
    • 32 KiB Instruction + 32KiB Data L1-Cache per core
    • 64 KiB Unified L2-Cache per core (for core 0-3, TBC: 128 KiB each for cores 4-7)
    • 1 MiB Unified L3-Cache (shared between all eight cores)
    • SIMD NEON, VFP4, crypto extensions (AES), Half precision floating point (FP16), ARMv8.4 dot product extensions
    • ARMv8.1 atomics, LDAPR (load acquire)
    • Virtualization, ARMv8.1 Virtualization Host Extensions (VHE)
    • Arm GIC-600 r1p4 GICv3 interrupt controller, LPIs, one ITS (for MSIs)
  • Memory
    • DDR3/DDR4/LPDDR2/LPDDR3/LPDDR4/LPDDR4X 32-bit DRAM controller, up to 4GiB
  • Embedded Controller:
    • XuanTie E906 RISC-V microcontroller (no MMU, but PMU)
  • 22nm HPC process

Family of sun55iw3

Beside the actual Allwinner A523 chip, there are several siblings sharing the same "sun55iw3" die, in different packages and different performance bins:

Main Name A523 A523 A527 A527 MR527 T527 T527 T527 T527
Sub Name M00X0000 H00X0000 M00X0000 H00X0000 M02X0D00 M00X0DCH M02X0DCH H00X0DCH H02X0DCH
Package FCCSP15*15 BGA522 EPCSP17*17 BGA664 HS-FCBGA17*17 BGA664
CPU [email protected] + [email protected] 4xA55@2.0GHz + [email protected] [email protected] + [email protected] 4xA55@2.0GHz + [email protected] [email protected] + [email protected] [email protected] + [email protected] [email protected] + [email protected] 4xA55@2.0GHz + [email protected] 4xA55@2.0GHz + [email protected]
RISC-V XuanTie E906 RISC-V@200M
GPU Mali G57 MC1 2EE
NPU - - - - VIP9000 2Tops - VIP9000 2Tops - VIP9000 2Tops
DSP - - - - - HIFI4 DSP 600M
H264 Decode 4K@30fps 4K@60fps 4K@30fps 4K@60fps
H265 Decode 4K@30fps
H264 Encode 4K@25fps
MIPI CSI/BK 4 6
Maximum resolution 2.5K 4K+1080P - 4K+1080P
Video Out 1xRGB, 2xMIPI, 1xDual-LVDS, 1xeDP - 1xRGB, 2xMIPI, 1xDual-LVDS, 1xeDP
HDMI - - HDMI2.0 - HDMI2.0
GMAC 1 2 - 2
CAN - - - - - 2
USB 2xUSB2.0 + 1xUSB3.0
Temperature －20℃~75℃ －40℃~85℃
Target Tablets Tablets Tablets Tablets Robots Industry Industry Industry Industry

Differences between A523 and A527/T527

Internally all the chips use the same die, but not all peripherals are connected to pins to be usable: the A523 package has 522 pins, the other packages have 664. And while there is a separate datasheet for the T527, there is no user manual that would detail those extra peripherals. By probing the actual chips, and by looking at BSP code, the extra IP is documented here.

extra GPIO banks

The A523 user manual does not describe GPIO banks I and J, though the schematics of boards using the T527 clearly list those banks. The BSP pinctrl driver describes the following pinmuxes.

All pins have a GPIO-IN function on mux0, GPIO-OUT on mux1, and the interrupt function on mux 14.

PortI (17 pins)
Pin mux2 mux3 mux4 mux5 mux6
PI0 I2C4-SCK UART4-TX PMW0-1 I2S2-IN I2S2-OUT
PI1 I2C4-SDA UART4-RX PMW0-2 I2S2-IN I2S2-OUT
PI2 UART5-TX SPI1-CS PMW0-3 I2S2-BCLK -
PI3 UART5-RX SPI1-CLK PMW0-4 I2S2-LRCK -
PI4 UART5-RTS SPI1-MOSI PMW0-5 I2S2-OUT I2S2-IN
PI5 UART5-CTS SPI1-MISO PMW0-6 I2S2-IN I2S2-OUT
PI6 UART6-TX UART4-RTS PMW0-7 SPI2-CS -
PI7 UART6-RX UART4-CTS PMW0-8 SPI2-CLK -
PI8 I2C5-SCK CIR-IN PMW0-9 SPI2-MOSI -
PI9 I2C5-SDA DMIC-D2 PMW0-10 - -
PI10 OWA-OUT DMIC-D1 PMW0-11 I2S2-MCLK -
PI11 UART3-TX DMIC-D0 PMW0-12 - -
PI12 UART3-RX - PMW0-13 SPI2-MISO -
PI13 UART6-CTS DMIC-D3 PMW0-14 I2S2-MCLK -
PI14 UART6-RTS DMIC-CLK PMW0-15 - -
PI15 UART3-RTS I2C2-SCK PMW1-0 - -
PI16 UART3-CTS I2C2-SDA PMW1-1 - -
PortJ (28 pins)
Pin mux2 mux3 mux4 mux5
PJ0 LCD1-D0 LVDS2-D0P - RGMII1-RXD1
PJ1 LCD1-D1 LVDS2-D0N - RGMII1-RXD0
PJ2 LCD1-D2 LVDS2-D1P - RGMII1-RXCTL/CRS-DV
PJ3 LCD1-D3 LVDS2-D1N - RGMII1-CLKIN/RXER
PJ4 LCD1-D4 LVDS2-D2P - RGMII1-TXD1
PJ5 LCD1-D5 LVDS2-D2N - RGMII1-TXD0
PJ6 LCD1-D6 LVDS2-CKP - RGMII1-TXCK
PJ7 LCD1-D7 LVDS2-CKN - RGMII1-TXCTL/TXEN
PJ8 LCD1-D8 LVDS2-D3P - MDC1
PJ9 LCD1-D9 LVDS2-D3N - MDIO1
PJ10 LCD1-D10 LVDS3-D0P - EPHY1-25M
PJ11 LCD1-D11 LVDS3-D0N - RGMII1-RXD3/NULL
PJ12 LCD1-D12 LVDS3-D1P - RGMII1-RXD2/NULL
PJ13 LCD1-D13 LVDS3-D1N - RGMII1-RXCK/NULL
PJ14 LCD1-D14 LVDS3-D2P - RGMII1-TXD3/NULL
PJ15 LCD1-D15 LVDS3-D2N - RGMII1-TXD2/NULL
PJ16 LCD1-D16 LVDS3-CKP - -
PJ17 LCD1-D17 LVDS3-CKN - -
PJ18 LCD1-D18 LVDS3-D3P - -
PJ19 LCD1-D19 LVDS3-D3N - -
PJ20 LCD1-D20 UART2-TX UART3-RTS SPI0-CS0
PJ21 LCD1-D21 UART2-RX UART3-CTS SPI0-CLK
PJ22 LCD1-D22 UART2-RTS UART3-TX SPI0-MOSI
PJ23 LCD1-D23 UART2-CTS UART3-RX SPI0-MISO
PJ24 LCD1-CLK I2C4-SCK UART4-TX SPI0-CS1
PJ25 LCD1-DE I2C4-SDA UART4-RX SPI0-WP
PJ26 LCD1-HSYNC I2C5-SCK UART4-RTS SPI0-HOLD
PJ27 LCD1-VSYNC I2C5-SDA UART4-CTS -

Documentation

The above manual was merged from the manual parts available at DeciHD github repo.

BSP code parts can be found using Github's code search for the die name: sun55iw3

References

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