2. Features

Owned by Longson Huang
Last updated: Nov 11, 2022 by hammer.hsieh
4 min read

Processors

ARM Cortex-A7 Quad core

  • Quad-core ARM® Cortex-A7(CA7) MPCore operating speed upto 960MHz

  • NEON multimedia processing engine with SIMDv2/VFPv4 ISA support

  • 32KB L1 I-cache and 32KB L1 D-cache

  • 512KB unified L2 cache

  • Generic Interrupt Controller (GIC) v2.0

ARM926 real-time core

  • Run as real time process unit

  • ARM926EJS operating speed up to 202 MHz

  • 16KB L1 I-cache and 16KB L1 D-cache

8051 low-power core

  • Selectable 32KHz or 202MHz operating speed;

  • Intended to be used as a supervisory core;

  • Low-power operation—500uA @ 32KHz for the entire IC

All IO and peripherals are accessible by Cortex-A7/ARM926/8051

Debug Interfaces

SWD interface

  • Dedicated pins for CA7 debug

  • Pin mux with other functions pin when production

JTAG interface

  • Dedicated pins for debug

  • ARM926 and 8051 share the same JTAG debug port

Power Management

Embedded DC/DC

  • Embedded DC-DC for computation unit, DDR3, and the core power

    • Only single 3.3V power supply[1]

    • 3.3V to 0.90V for CA7

    • 3.3V to 1.5V for DDR3

    • 3.3V to 1.2V for Peripheral logics

  • Embedded temperature sensor (resolution 1°C) for temperature detection (temperature detection range from -40°C to 125°C)

[1] 1.2V external power is needed if 1.2V consumes current more than 1200mA

 

Memory

Embedded DRAM

  • Embedded 128MB/512MB DDR3 1066 DRAM

SP7021-IS : built-in 128MB DDR3,

SP7021-IF : built-in 512MB DDR3

 

Flash interface

  • Support SPI NAND / SPI NOR / eMMC

  • Support BCH ECC

  • Support 1 bit/ 2bits/4-bits SPI_FLASH memory

System Control

Real-Time Counter (RTC)

  • RTC with leap year and daylight saving time correction by software

  • RTC with alarm timer with its own output port

    • CPU set the wakeup time, shutdown until this time

    • RTC wake up port to output pin and CPU interrupt

    • RTC connect to the backup power pin, charging battery without adding any charging circuit (??)

PWM, Timers, Input Capture module

  • PWM:

    • Each module contain at least four synchronized PWM channels

    • output resolution region (ex. System clock is 202 Mhz ,pwm max 202Mhz/256 = 789KHz , Min 202/(256*65535) = 12 Hz)

  • Four General Purpose Timers:

    • Four 16 bit and up to two 32 bit timers/counters

  • Four Input Capture (IC) modules

  • Independent Watchdog Timers (WDT)

Security

Security Boot

  • External boot image verified by ED25519 algorithm

  • External boot image will be signature-verified by internal ROM code and private/public key before loaded.

Crypto Engines

  • PKA Engine (RSA)

  • Hash Engine (SHA3, MD5)

  • Bulk Encryption/decryption Engine (AES)

Unique factory info and OTP memory

  • Total 128 bytes

  • IC Vendor (before shipping)

    • Device ID, revision, 16 bits

    • The serial number

    • Two “registered” MAC addresses for two MAC controllers (each 48b)

  • User

    • 64 bytes of one-time programmable memory for storing user IDs, hash data (for protection)

  • OTP is programmed by OTP program voltage pin. No extra programming circuit needed.

Peripherals

Three separate MMC / SD / SDIO interfaces

  • First port: eMMC 4.41 DDR 104MB/s for primary boot disk

  • Second port: SD card (SD 2.0) for removable media

  • Third port: SDIO (SD 2.0) interface for Wi-Fi module

Two USB 2.0 OTG Ports

  • Support boot from USB

  • Support USB video class (UVC).

General Purpose IO (GPIO) ports

  • Total 9 GPIO ports (GPIO0~GPIO8) and 8-bits for each port

  • Two ways of accessing individual GPIO lines:

    • Through 8-bit registers, where eight lines are read or written at the same time.

    • Bit-wise access: access single bit without disturbing other bits in the same register

  • Strong driving (16mA) for GPIO0 port

  • Separated interrupt configuration, 8 interrupt sources at GPIO1 port and need to be configured as wake-up source.

  • 3.3V with 5V tolerance

  • Tri-state output pad with Schmitt trigger Input / enable / open collector / invert in or out for all ports

Two Ports Ethernet Switch

  • Two IEEE 802.3 10/100M ports with RMII interface

  • Support full and half duplex

  • Support Daisy Chain and NIC mode for different application scenarios

  • Support IEEE802.1Q VLAN tagging and un-tagging

  • Support MAC clone and MAC security

  • Support 4 traffic classes (compatible with IEEE802.1D-2004)

  • Support 1K MAC address table entries with programmable aging time

Five UARTs

  • One console UART with only Tx/Rx lines

  • Four full function UARTs

    • 128 bytes FIFO

    • Automatic RTS/CTS control

    • Clocking from 27MHz or external CLK input

  • Baud rates up to 921600 bps with Error rate under 3%

  • Independent Tx/Rx DMA functions for every UARTs.

Four SPI controllers

  • Master mode and slave mode

  • SPI FIFO depth 8 bytes of RX and TX registers

  • Independent Tx/Rx DMA function for each port

Four I2C

  • I2C Master

  • I2C clock stretching and FIFO depth 32 bytes

  • Independent Tx/Rx DMA function for each port

Pin Mux

  • Any signals of each function could map to any pin using pin mux mapping matrix

  • Pin mux is run time programmable

Display

HDMI

  • HDMI TX 1.4, resolution up to 720P

MIPI CSI

LCD Timing Controller (TCON)

  • Support TTL interface panel for monitor, max resolution 1280x720.

  • Support TTL RGB888 output

Audio Interfaces

I2S

  • I2S output up to 6 stereo channels (I2Sx3)

  • I2S input up to 4 stereo channels (I2Sx2)

SPDIF

  • 1 SPDIF output

  • 1 SPDIF input

Multi Channel Audio

  • Support TDM/PDM interface for 8 channel microphone array

    • PCM (TDM/I2S interface, 1-Rx+1-Tx interface)

    • TDM support 16/24/32bits, 8 channels, master/slave mode

Others

FPGA BUS IO Interface (FBIO)

  • FPGA platform expansion through the FBIO interface

Package

  • FCC Class B for system level, Industrial temperature range -40°C ~ 85°C

  • 20mmX20mm LQFP176-EP package