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MT7621 DUSUN Core Board

Table of Contents

1. Introduction

1.1 Purpose& Description

DSOM-090M adopts MTK’s new dual-core network chip MT7621A solution, the main frequency is up to 880MHz,

provides five 10/100/1000M adaptive Ethernet interfaces, 1x USB 2.0, 1x USB3.0 (external), 1x Micro SD Card

(external) setting) and other interfaces. Comply with IEEE802.11AC/N/G/B/A wireless network protocol.

1.2 Product Feature Summary

  •  DSOM-090M adopts MTK MT7621AT+MT7603EN+MT7613BEN as the master chip,       integrates dual-core MIPS1004K, and the main frequency is up to 880MHz.
  •  RAM capacity supports 512MB DDR3 (128MB/256MB/512MB optional)
  •  EMMC capacity supports 4GB eMMC
  •  OS: OpenWRT
  •  Standard: IEEE 802.11 a/b/g/n/ac
  •  Frequency bandwidth: 2.4835MHz~5.825MHz
  •  Wireless rate: 2.4G: 300Mbps, 5G: 900Mbps
  •  Interface WAN, LAN1, LAN2, LAN3, LAN4
  •  WAN access mode PPPoE, dynamic IP, static IP, 3G/4G/5G
  •  Working mode: AP, ROUTER

2. Main chip block diagram

0001

3. Specifications

3.1 Technical Parameters

Basic parameters
Master chipMT7621AT+MT7603EN+MT7613BEN
CPUdual-core MIPS1004K, main frequency 880MHz
RAM512 DDR3 (optional 128MB ~ 512MB)
Storage4GB/8GB eMMC 64MB SPI Flash
hardware features
Ethernet10/100/1000M bps WAN.LAN1.LAN2.LAN3.LAN4
Wireless network2.4GHz/5.0GHz WiFi
USBUSB 2.0 × 1、USB3.0 × 1 (external)
DebugDebug serial port × 1 for development and debugging
Extended interfaceSupport PWM×4, UART×3, I2C×1, SPI×1, I2S×1, SDXC, PCIe Host ×3, RGMII
TMII/MII ×1, 2.4G/5G ANT interface
Operating temperature-10°C to +70°C
Storage temperature-20°C to +80°C
System software
System SupportMTK-openwrt-3.10.14, based on Linux platform
Appearance specification
Core board size65.0*65.0*1.6mm
Interface TypeStamp Hole 104pins, 1.2mm pitch

3.2 RF technical parameters

Transmit power2.4G:
802.11b-11Mbps: 17±1.5dBm&< [email protected]
802.11g-54Mbps: 15±1.5dBm&< [email protected]
802.11n -HT20-65Mbps: 14±1.5dBm&< [email protected]
802.11n -HT40-300Mbps: 14±1.5dBm&< [email protected] WiFi-5G:
18.0±2dBm&< [email protected] 54Mbps
17.0±2dBm&< [email protected]
17.0±2dBm&< [email protected]
16.5±2dBm&< [email protected]
Receive sensitivityWiFi-2.4G:
11b 1Mbps: [email protected]<8%
11b 11Mbps: [email protected]<8%
11g 54Mbps: [email protected]<10%
11n-HT40-MCS7-2.4G: [email protected]<10% WiFi-5G:
11a 54Mbps: [email protected]<10%
11n-HT40-MCS7-5G: [email protected]<10%
11ac-HT80-MCS9-5G: [email protected]<10%

4. Core board size (for reference only)

WechatIMG576

5. Interface description (for reference only)

WechatIMG577

6. Pin definition (for reference only)

Notes1:

① : I/O types: I = input, O = output, I/O = input/output (bidirectional) , I/GPIO = When used as GPIO port, it is

input (I) ,

A = Analog , G= Ground , P = power supply , DOWN = Internal pull down , UP = Internal pull UP

0 = Lowe Level 1 = High level

Pin
number
NameI/O TypeI/O
Pull
I/O
Def
I/O
Voltage(
Function
Unit: V)
1D2DB_PORST_NGPIO#18Power on reset
2WDT_RST_NGPIO#19Watchdog reset
3JTAGGPIO#15JTAG Mode Select
4JTMSGPIO#14JTAG Data Input
5JTRST_NGPIO#17JTAG Target Reset
6JTDIGPIO#13JTAG Data Output
7JTCLKGPIO#16JTAG Clock
85G_WLED_N5G_WIFI_LED
9ESW_P0Port #0 PHY LED indicators
10LED_WL_GLED_WIFI_G
11ESW_P2Port #2 PHY LED indicators
12ESW_P1Port #1 PHY LED indicators
13ESW_P3Port #3 PHY LED indicators
14ESW_P4Port #4 PHY LED indicators
15TXD0GPIO#22RGMII2 Tx Data bit #0
16RXD0GPIO#28RGMII2 Rx Data bit #0
17I2C_SDGPIO#3I2C Data
18I2C_SCLKGPIO#4I2C Clock
19TXD2GPIO#11RGMII2 Tx Data bit #2
20RXD2GPIO#12RGMII2 Rx Data bit #2
21CTS2_NGPIO#_TXUART Clear To Send
22RTS2_NGPIO#9UART Request To Send
23TXD3GPIO#7RGMII2 Tx Data bit #
24RXD3GPIO#8RGMII2 Rx Data bit #3
25RTS3_NSPDIF_TXUART Request To Send
26CTS3_NGPIO#6UART Clear To Send
27GNDGround
28GPIO0GPIO#0GPIO0 (output only)
29DM1SB Port0 HS/FS/LS data pin Data+
(USB2.0)
30DP1SB Port0 HS/FS/LS data pin Data+
(USB2.0)
31DP0USB Port1 data pin Data+ (USB3.0)
32DM0USB Port1 data pin Data+ (USB3.0)
33USB_RXNUSB Port0SS data pinRX+-(USB3.0)
34USB_RXPUSB Port0SS data pinRX+-(USB3.0)
35USB_TXNUSB Port0SS data pinTX- (USB3.0)
36USB_TXPUSB Port0SS data pinTX- (USB3.0)
37ND_RB_NGPIO#42NAND Flashi Redy/Busy
38ND_CLEGPIO#43NAND Flash Command Latch Enable
39ND_WPGPIO#41NAND Flash Write Protect
40ND_ALEGPIO#44NAND Flash ALE Latch Enable
41ND_D0GPIO#45NAND Flash Data0
42ND_D1GPIO#46NAND Flash Data1
43ND_D2GPIO#47NAND Flash Data2
44ND_D3GPIO#48NAND Flash Data3
45ND_RE_NGPIO#36NAND Flash Read Enable
46ND_CS_NGPIO#34NAND Flash Chip Select
47ND_D4GPIO#37NAND Flash Data4
48ND_WE_NGPIO#35NAND Flash Write Enable
49ND_D6GPIO#39NAND Flash Data6
50ND_D5GPIO#38NAND Flash Data5
51GNDGround
52ND_D7GPIO#40NAND Flash Data7
53ESW_TN_D_P4Ethernet
port #4
Port #4 MDI Transceivers
54ESW_TP_D_P4Ethernet
port #4
Port #4 MDI Transceivers
55ESW_TN_C_P4EthernetPort #4 MDI Transceivers
port #4
56ESW_TP_C_P4Ethernet
port #4
Port #4 MDI Transceivers
57ESW_TN_B_P4Ethernet
port #4
Port #4 MDI Transceivers
58ESW_TP_B_P4Ethernet
port #4
Port #4 MDI Transceivers
59ESW_TN_A_P4Ethernet
port #4
Port #4 MDI Transceivers
60ESW_TP_A_P4Ethernet
port #4
Port #4 MDI Transceivers
61GNDGround
62GNDGround
63ESW_TN_D_P3Ethernet
port #3
Port #3 MDI Transceivers
64ESW_TP_D_P3Ethernet
port #3
Port #3 MDI Transceivers
65ESW_TN_C_P3Ethernet
port #3
Port #3 MDI Transceivers
66ESW_TP_C_P3Ethernet
port #3
Port #3 MDI Transceivers
67ESW_TN_B_P3Ethernet
port #3
Port #3 MDI Transceivers
68ESW_TP_B_P3Ethernet
port #3
Port #3 MDI Transceivers
69ESW_TN_A_P3Ethernet
port #3
Port #3 MDI Transceivers
70ESW_TP_A_P3Ethernet
port #3
Port #3 MDI Transceivers
71GNDGround
72GNDGround
73ESW_TN_D_P2Ethernet
port #2
Port #2 MDI Transceivers
74ESW_TP_D_P2Ethernet
port #2
Port #2 MDI Transceivers
75ESW_TN_C_P2Ethernet
port #2
Port #2 MDI Transceivers
76ESW_TP_C_P2Ethernet
port #2
Port #2 MDI Transceivers
77ESW_TN_B_P2Ethernet
port #2
Port #2 MDI Transceivers
78ESW_TP_B_P2Ethernet
port #2
Port #2 MDI Transceivers
79ESW_TN_A_P2Ethernet
port #2
Port #2 MDI Transceivers
80ESW_TP_A_P2Ethernet
port #2
Port #2 MDI Transceivers
81GNDGround
82GNDGround
83ESW_TN_D_P1Ethernet
port #1
Port #1 MDI Transceivers
84ESW_TP_D_P1Ethernet
port #1
Port #1 MDI Transceivers
85ESW_TN_C_P1Ethernet
port #1
Port #1 MDI Transceivers
86ESW_TP_C_P1Ethernet
port #1
Port #1 MDI Transceivers
87ESW_TN_B_P1Ethernet
port #1
Port #1 MDI Transceivers
88ESW_TP_B_P1Ethernet
port #1
Port #1 MDI Transceivers
89ESW_TN_A_P1Ethernet
port #1
Port #1 MDI Transceivers
90ESW_TP_A_P1Ethernet
port #1
Port #1 MDI Transceivers
91GNDGround
92GNDGround
93ESW_TN_D_P0Ethernet
port #0
Port #0 MDI Transceivers
94ESW_TP_D_P0Ethernet
port #0
Port #0 MDI Transceivers
95ESW_TN_C_P0Ethernet
port #0
Port #0 MDI Transceivers
96ESW_TP_C_P0Ethernet
port #0
Port #0 MDI Transceivers
97ESW_TN_B_P0Ethernet
port #0
Port #0 MDI Transceivers
98ESW_TP_B_P0Ethernet
port #0
Port #0 MDI Transceivers
99ESW_TN_A_P0Ethernet
port #0
Port #0 MDI Transceivers
100ESW_TP_A_P0Ethernet
port #0
Port #0 MDI Transceivers
101GNDGround
102GNDGround
103VINPOWER
104VINPOWER

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