D-Link DSL-2750B rev B1
bgn (N300) | |||||||||||||||||||||||||
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| D-Link DSL-2750B rev B1 | |||||||||||||||||||||||||
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| Homepage | |||||||||||||||||||||||||
| Support | |||||||||||||||||||||||||
| Wikipedia | |||||||||||||||||||||||||
| WikiDevi.wi-cat.ru | |||||||||||||||||||||||||
| 3rd Party Firmware | |||||||||||||||||||||||||
| dd-wrt | |||||||||||||||||||||||||
| OpenWrt | |||||||||||||||||||||||||
| Tomato any flavor |
Status Unknown | ||||||||||||||||||||||||
| Gargoyle |
Incompatible | ||||||||||||||||||||||||
| Platform | |||||||||||||||||||||||||
| Brand • Model • Rev |
D-Link DSL-2750B B1 | ||||||||||||||||||||||||
| FCC ID | |||||||||||||||||||||||||
| Board ID |
2976380401 | ||||||||||||||||||||||||
| Type |
wireless router, dsl modem | ||||||||||||||||||||||||
| CPU1 |
Broadcom BCM63281 | ||||||||||||||||||||||||
| CPU1 Type |
BMIPS4350 | ||||||||||||||||||||||||
| CPU1 Speed |
320 MHz | ||||||||||||||||||||||||
| Flash1 Chip |
Macronix MX25L6406E x 1 | ||||||||||||||||||||||||
| Flash1 Size |
8 MiB8,388,608 B <br />65,536 Kib <br />8,192 KiB <br />64 Mib <br />0.00781 GiB <br /> (Serial(SPI),CMOS) | ||||||||||||||||||||||||
| RAM1 Size |
64 MiB67,108,864 B <br />524,288 Kib <br />65,536 KiB <br />512 Mib <br />0.0625 GiB <br /> (DDR) | ||||||||||||||||||||||||
| RAM1 Chip |
Nanya NT5TU32M16DG x 1 | ||||||||||||||||||||||||
| ETH chip1 |
Broadcom BCM63281 | ||||||||||||||||||||||||
| Switch |
Broadcom BCM63281 | ||||||||||||||||||||||||
| Ethernet Port Count |
4-100MbE-LAN | ||||||||||||||||||||||||
| Wired Standard |
IEEE 802.3i/3u | ||||||||||||||||||||||||
|
802dot11 OUI: none specified | |||||||||||||||||||||||||
| Stock bootloader |
CFE 1.0.37-106.5 | ||||||||||||||||||||||||
| Stock FW OS |
Linux | ||||||||||||||||||||||||
| Expansion IF types |
USB 2.0 | ||||||||||||||||||||||||
| USB ports |
1 | ||||||||||||||||||||||||
| USB Hub Compatible |
Untested | ||||||||||||||||||||||||
| Power |
12 VDC, 1 A | ||||||||||||||||||||||||
| Connector type |
barrel | ||||||||||||||||||||||||
| Serial Port (UART) |
yes, internal, 4-pin header, (115200 8N1) | ||||||||||||||||||||||||
|
Flags: ADSL2+ Annex A | |||||||||||||||||||||||||
| Other | |||||||||||||||||||||||||
|
Default IP address: 192.168.1.1 | |||||||||||||||||||||||||
| Manuf/OEM/ODM |
Delta Networks AW4339U | ||||||||||||||||||||||||
| 3rd Party Firmware Support | |||||||||||||||||||||||||
| Retail | |||||||||||||||||||||||||
| Availability | End of Life | ||||||||||||||||||||||||
| FCC approval date | 27 July 2011 | ||||||||||||||||||||||||
| (Est.) release date | 28 December 2011 | ||||||||||||||||||||||||
| Radio 1 | |||||||||||||||||||||||||
| Chip1 |
Atheros AR9287 | ||||||||||||||||||||||||
| Wireless interface OUI |
none specified | ||||||||||||||||||||||||
| Antenna Connector Type |
None | ||||||||||||||||||||||||
| MIMO status |
2x2:2 | ||||||||||||||||||||||||
| Wireless Standard |
IEEE 802.11b/g/n | ||||||||||||||||||||||||
| 802.11n |
up to 300 Mbps | ||||||||||||||||||||||||
| 802.11g |
up to 54 Mbps | ||||||||||||||||||||||||
| 802.11b |
up to 11 Mbps | ||||||||||||||||||||||||
| WiFi Operating Frequency |
2.4 GHz | ||||||||||||||||||||||||
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For a list of all currently documented Atheros (QCA) chipsets with specifications, see Atheros.
For a list of all currently documented Broadcom chipsets with specifications, see Broadcom.
For a list of all currently documented D-Link device with specifications, see D-Link.
- • 300 Mbps - 2SS 2.4GHz 802.11n (40MHz chan.) = N300 class
Overview
"2976380401" and "A610A234006R_R6" is silkscreened on the board.
- This device appears to use Broadcom BCM63281.
Additional models of.. D-Link
- DSL-2750B (Annex A, USB, 'dying gasp' feature)
- DSL-2740B (Annex A, no USB, without 'dying gasp')
- DSL-2740U (Annex A, no USB, without 'dying gasp')
- DSL-2741B (Annex B, USB, 'dying gasp' feature)
- DSL-2741U (Annex B, USB, 'dying gasp' feature)
Links of Interest
Flashing
 | NOTE: During configuration or flashing a device, the only things that should be hooked to the device is the computer and power. |
OEM
Firmware can be flashed via the regular web interface, though if you have firmware v2.03 it sometimes uploads the firmware and then says "The selected file contains an illegal image".
In this case you can use the CFE bootloader: power the router off, hold the recessed reset button pressed with a pointy object, power the modem on and, within the first few seconds, navigate to 192.168.1.1. You should get a plain HTML page with nothing but "Browse" and "Upload firmware" buttons.
Flashing OpenWrt
 | DSL will not work at all on devices with BCM63xx DSL chipset (due to unavailability of FLOSS driver for Broadcom chips). Consider this when choosing a device to buy, or when deciding to flash OpenWrt on your device because it is listed as supported. See Broadcom DSL, Unsupported: DSL modem and Broadcom BCM63xx for details. |
| This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 8MB FLASH / 64MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 8/64 warning for details. This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation. This means that you will not be able to install many packages, and that you might experience crashes due to OOM situations more or less often. See OpenWrt on 8/64 devices what you can do now. |
OpenWrt Target: bcm63xx
OpenWrt Subtarget: generic
OpenWrt Package architecture: mips_mips32
Support started version: 12.09
Current supported version: 23.05.5
Unsupported Functions:
DSL modem
Please insert instructions here
JTAG-Serial Info
Serial Port
Serial Pinouts
The internal serial header on this device is J606, which is assumed to have the same pinout as the D-Link DSL-2750B rev T1:
J606 (RxD) (GND) (TxD) (3.3) Pin4 Pin3 Pin2 Pin1
Pin 1 is the right-hand one when looking at the top of the circuit board from the front of the router (on the underside it has a square pad instead of a round one.)
This is untested.
Pictures
Front
Back
Right side
- internal
board top
central board portion
BCM43225 Wi-Fi IC
Flash + BCM6301
board, DSL section
board, power section
See also
- Broadcom BCM63281/BCM43225
- Broadcom BCM63281/BCM43225
- D-Link DSL-2750B rev B1 (AW4339U)
- Broadcom BCM6358SR/BCM4321/RTL8306G
- Flash: Macronix MX29LV640ETTI-70G (8MB)
- RAM: Mira P3S56D40ETP (32MB)
- D-Link
- Embedded system/wireless router
- Embedded system/dsl modem
- Embedded System Broadcom
- Embedded System BCM63281
- Broadcom
- Embedded System BMIPS4350
- Embedded System
- Manuf Delta Networks
- OpenWrt Supported
- Embedded System Atheros
- Embedded System AR9287
- Atheros
- Has Mimo Status
- Embedded System IEEE 802.11b/g/n
- Single-Radio Wireless Embedded System
- Wireless Embedded System
- English Documentation
