MediaTek MT7620

Fonte: wirelesspt.net

The MediaTek MT7620A / MT7620N are Wi-Fi System-On-Chips (WiSOC) is typically used in access point and router platforms.

Common specifications

  • CPU architecture: MIPS 24KEc (RT6352)
  • 802.11n 2T/2R (2x2:2) 2.4GHz 300Mbps MAC/BB/PA/RF FEM
  • SPI Flash support
  • integrated 6-port Ethernet switch (MT7530) with five 10/100 PHYs
  • supports Ralink / MTK HW_NAT v2
  • Additional interfaces: USB 2.0 (1x, host/client), I2C
  • JTAG is muxed with GPIO (see the datasheet, requires a different bootstrapping configuration)

Features

  • MIPS24KEc 580/600 MHz w/ 64 KB I-Cache and 32 KB D-Cache
  • 2T2R 802.11n 2.4GHz w/ MAC/BBP/RF FEM
Support external PA/LNA
  • 16-bit SDR/DDR1/DDR2 up to 256 Mbytes
  • SPI, NAND Flash, SDXC, eMMC
  • USB2 Host/Device, PCIe Host/Device
I2C, UART (2x), JTAG, GPIO
  • 5port FE SW + RGMII (2x)
  • Audio interface (I2S, PCM)
  • HW storage accelerator
  • 2Gbps IPv4/6 routing, NAT, NAPT
  • OS: Linux 2.6.36 SDK, OpenWrt, eCos
  • iNIC Driver (RGMII/PCIe): Linux 2.4/2.6
  • 2L PCB for N300 (MT7620N)
MT7620A: full functions in TFBGA package
MT7620N: N300 mainly in DRQFN package

Part numbers and notable differences

MediaTek MT7620N

  • Package: DR-QFN 148pin, 12x12mm
  • Clocked @580/600/620MHz (Padavan posts)
CPU_PLL = (40 000 000 * PLL_MULT_RATIO) / PLL_DIV_RATIO
PLL_DIV_RATIO = 2, DDR RAM = CPU_PLL/3, CONFIG_RALINK_MT7620_PLL600
580MHz: PLL_MULT_RATIO = 29 / 385.02 BogoMIPS (lpj=770048) / RBUS 193MHz / DDR 385MHz
600MHz: PLL_MULT_RATIO = 30 / 397.82 BogoMIPS (lpj=795648) / RBUS 200MHz / DDR 400MHz
620MHz: PLL_MULT_RATIO = 31 / 410.62 BogoMIPS (lpj=821248) / RBUS 207MHz / DDR 415MHz
System Tick Counter = 50KHz (Sleep Mode support), SSC (Spread Spectrum Clock)
CONFIG_RALINK_CPUSLEEP_AND_SYSTICK_COUNTER=y
  • SDRAM / DDR1 / DDR2 RAM}} (64MB/512Mb max.) support
SDRAM: CPU:SYS = 4, DDR1/DDR2: CPU:SYS = 3
  • no RGMII - usable with 5 switched FE ports
  • Wireless network: 2.4GHz 802.11n MIMO 2x2:2
  • Wireless chip: MediaTek RT5390 (int. SoC)
  • Ethernet switch: MediaTek MT7530 (int. SoC)

MediaTek MT7620A

  • Package: TFBGA 265 ball, 11x11mm
  • Clocked @ 580 MHz
  • DDR2 RAM (256MB/2Gbit max.) and NAND Flash support
  • 2x RGMII - usable with 5 switched FE ports + RGMII or
4 switched FE ports and 2x RGMII, among other modes
  • Additional interfaces: PCIe (1x), SDHC, PCM, I2S
  • Wireless network: 2.4GHz 802.11n MIMO 2x2:2
  • Wireless chip: MediaTek RT5390 (int. SoC)
  • Ethernet switch: MediaTek MT7530 (int. SoC)

Drivers

  • 2.7.1.5 Ralink
  • RT3092 - PCIe (2.4 GHz)
  • RT3390 - PCIe (2.4 GHz)
  • RT5392 - PCIe (2.4 GHz)
  • RT3593 - PCIe (2.4/5 GHz)
  • RT5592 - PCIe (2.4/5 GHz)
  • 2.7.1.6 / 2.7.2.0 Ralink
  • RT3052 - APSoC RBUS (2.4 GHz)
  • RT3352 - APSoC RBUS (2.4 GHz)
  • RT5350 - APSoC RBUS (2.4 GHz)
  • RT3662 - APSoC RBUS (2.4/5 GHz)
  • RT3883 - APSoC RBUS (2.4/5 GHz)
  • MT7620A/N - APSoC RBUS (2.4 GHz)
  • 3.0.0.9 MediaTek
  • MT7610E - PCIe (2.4/5 GHz)
  • 3.0.4.0 MediaTek
(MT76x2E_MT7620_LinuxAP_V3.0.4.0_DPA_20150630)
(MT76x2e_MT7620_LinuxAP_V3.0.4.0.P1_DPA_20150910)
  • MT7602E - PCIe (2.4 GHz)
  • MT7612E - PCIe (2.4/5 GHz)
  • MT7620A/N - APSoC RBUS (2.4 GHz)
(MT76x2e_MT7620_LinuxAP_V3.0.4.0_DPA_20150617) dl
  • 4.0.1.0 MediaTek
(MT7603e_LinuxAP_V4.0.1.0rev1_DPA_20150629)
(ANDES microcode - production version 20150624)
  • MT7603E - PCIe/MT_MAC (2.4 GHz)
(MT7603e_LinuxAP_V4.0.1.0rev1_DPA_20150629) dl
  • 4.0.1.3 MediaTek
  • MT7615 - APSoC MT_MAC (1x 4T4R/2x 2T2R 2.4/5GHz)
(MT7615_LinuxAP_V4.4.0.1_20151231_144753) dl
  • MT7628 - APSoC RBUS/MT_MAC (2T2R 2.4GHz)
(MT7628-STA-4.0.1.4) dl
  • MT7688 - APSoC RBUS/MT_MAC (1T1R 2.4GHz)
  • 4.4.1.0 MediaTek
(MT7615_LinuxAP_V4.4.1.0_20160701)
SB mode: 4T4R 802.11ac 5GHz (BW160)
DBDC mode: 2T2R 2.4GHz + 2T2R 5GHz
  • MT7621AT/MT7615EN - ASUS RT-AC85U

Links

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