TP-LINK TL-MR3020 v1.x

multiple revisions of this device, use caution

bgn (N150)
Portable 3G Wireless N Router
Homepage	Product page
Support	Support page
Wikipedia	TP-Link
3rd Party Firmware
dd-wrt	Supported
OpenWrt	Was Supported
Tomato any flavor	Incompatible
Gargoyle	Status Unknown
Platform
Brand • Model • Rev	TP-LINK TL-MR3020 v1.x
FCC ID	TE7MR3020
Board ID	2050500194
Type	mobile router
CPU1	Atheros AR9331
CPU1 Type	MIPS 24Kc
CPU1 Speed	400 MHz
Flash1 Chip	Spansion S25FL032PIF
Flash1 Size	4 MiB4,194,304 B <br />32,768 Kib <br />4,096 KiB <br />32 Mib <br />0.00391 GiB <br />
RAM1 Size	32 MiB33,554,432 B <br />262,144 Kib <br />32,768 KiB <br />256 Mib <br />0.0313 GiB <br />
RAM1 Chip	Winbond W9425G6JH-6
ETH chip1	Atheros AR9331
Ethernet Port Count	1-100MbE-LAN
Wired Standard	IEEE 802.3i/3u
802dot11 OUI: none specified
Stock bootloader	U-Boot
Expansion IF types	USB 2.0
USB ports	1
USB Hub Compatible	Untested
Power	5 VDC, 1 A
Connector type	USB Female Mini-B
Serial Port (UART)	yes, (115200 8N1)
Flags: 3G capable
Other
Manuf/OEM/ODM	TP-LINK
3rd Party Firmware Support	DD-WRT • (List) , OpenWrt (Was) , libreCMC
Retail
Availability	End of Life
FCC approval date	21 February 2012
(Est.) release date	13 January 2012
UPC	845973051709 (UPC DB, On eBay)
EAN	6935364051709 (UPC DB, On eBay)
ASIN	B00634PLTW ,  multiple uses
Country of manuf	China
Radio 1
Chip1	Atheros AR9331
Wireless interface OUI	none specified
Antenna Connector Type	none specified
MIMO status	1x1:1
Wireless Standard	IEEE 802.11b/g/n
802.11n	up to 150 Mbps
802.11g	up to 54 Mbps
802.11b	up to 11 Mbps
WiFi Operating Frequency	2.4 GHz
CPU1 brand Radio1 chip1 brand Radio1 chip2 brand TP-LINK TL-MR3020 v1.x Atheros Atheros TP-LINK TL-MR3020 v3.x MediaTek MediaTek

For a list of all currently documented Atheros (QCA) chipsets with specifications, see Atheros.

For a list of all currently documented TP-LINK device with specifications, see TP-LINK.

• 150 Mbps - 1SS 2.4GHz 802.11n (40MHz chan.) = N150 class

Overview

• TP-LINK TL-MR3020 v3.x (v3/v3.20)

CPU: MediaTek MT7628NN @575MHz WiSoC

Flash: GigaDevice GD25Q64BSIG (8MB)

RAM: Zentel A3R12E40DBF-8E (64MB)

WLAN: 802.11bgn 2T2R (2.4GHz)

LAN: 1x FE, USB: 1x USB 2.0 port

PCB ID: 2050500974

Links of Interest

• TP-LINK TL-MR3020 on the OpenWrt wiki

See also: TP-LINK TL-MR3020 v3.x

Flashing

Flashing dd-wrt

Supported by dd-wrt as of = tl-mr3020 build 19342 20120608

Please insert instructions here

Flashing OpenWrt

On the OpenWrt ToH (techdata entry)
On the OpenWrt Wiki
On the OpenWrt Forum
OpenWrt Target: ar71xx-ath79
OpenWrt Subtarget: generic
OpenWrt Package architecture: mips_24kc
Support started version: 12.09
Current supported version: ?

Please insert instructions here

JTAG-Serial Info

Notes on JTAG

The EJTAG interface AR9331 is different from the ones on most chips:

• First of all, the Jtag pins are multiplexed with GPIOs, GPIO11 must be pull high to bootstrap the debug interface.

Pressing the SW2 switch while powering on the unit should take care of this as it is connected to GPIO11.

• The second problem is that U-Boot will disable EJTAG, even if it was enabled by pulling GPIO11 high during power up.

To workaround this, a jumper can be added between the CS pin on the flash and CPU.

• And last problem is that TP-Link does not provide test points, pads or pins for the Jtag interface.

OpenOCD

This sequence will be needed to initiate PLL and RAM:

PLL / RAM • >>

#pll initialization mww 0xb8050008 0x00018004 mww 0xb8050004 0x00000352 mww 0xb8050000 0x40818000 mww 0xb8050010 0x001003e8 mww 0xb8050000 0x00818000 mww 0xb8050008 0x00008000 sleep 1 # Setup DDR1 config and flash mapping mww 0xb8000000 0x7fbc8cd0 mww 0xb8000004 0x9dd0e6a8 mww 0xb8000010 0x8 mww 0xb8000008 0x133 mww 0xb8000010 0x1 mww 0xb800000c 0x2 mww 0xb8000010 0x2 mww 0xb8000010 0x8 mww 0xb8000008 0x33 mww 0xb8000010 0x1 mww 0xb8000014 0x4186 mww 0xb800001c 0x8 mww 0xb8000020 0x9 mww 0xb8000018 0xff #UART mww 0xb8020004 0x4388 mww 0xb8020008 0xc2000 #GPIO mww 0xb8040028 0x48002

Pictures

Retail Images

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User Images

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