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toh:netgear:wnr834b [2010/10/03 05:37] realoptytoh:netgear:wnr834b [2019/03/21 17:09] – Datatables added, cleanup, pictures resized, some tags added tmomas
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 +====== Netgear WNR834B ======
  
 +{{section>meta:infobox:432_warning#infobox_for_dataentries&noheader&nofooter&noeditbutton}}
 +
 +===== Hardware Versions =====
 +^ Model ^ CPU ^ Wireless ^ Flash ^ RAM ^ FCC ID ^
 +| [[http://kb.netgear.com/app/products/model/a_id/2616|WNR834B v1]] | BCM3302 | BCM4321 (PC-card) | 4MB | 16MB | PY306100032 |
 +| [[http://kb.netgear.com/app/products/model/a_id/2617|WNR834B v2]] | BCM3302 | BCM4321 (integrated) | 4MB | 16MB | PY307100061 | 
 +
 +===== Supported Versions =====
 +---- datatable ----
 +cols    : Brand, Model, Versions, Supported Current Rel, OEM device homepage URL_url, OWrt Forum Topic URL_url, Device Techdata_pageid
 +headers : Brand, Model, Version, Current Release, OEM Info, Forum Topic, Technical Data
 +align   : c,c,c,c,c,c,c
 +filter  : Model=WNR834B
 +----
 +
 +
 +===== Hardware Highlights =====
 +---- datatable ----
 +cols    : Model, Versions, CPU, CPU MHz, Flash MB_mbflashs, RAM MB_mbram, WLAN Hardware, WLAN 2.4GHz, WLAN 5.0GHz, Ethernet 100M ports_, Ethernet Gbit ports_, Modem, USB ports_
 +header  : Model, Version,SoC,CPU MHz,Flash MB,RAM MB,WLAN Hardware,WLAN2.4,WLAN5.0,100M ports,Gbit ports,Modem,USB
 +align   : c,c,c,c,c,c,c,c,c,c,c,c,c
 +filter  : Model=WNR834B
 +----
 +
 +
 +===== Installation =====
 +---- datatable ----
 +cols    : Model, Versions, Supported Current Rel, Firmware OpenWrt Install URL_url, Firmware OpenWrt Upgrade URL_url, Firmware OEM Stock URL_url
 +headers : Model, Version, Current Release, Firmware OpenWrt Install, Firmware OpenWrt Upgrade, Firmware OEM Stock
 +align   : c,c,c
 +filter  : Model=WNR834B
 +----
 +
 +-> [[docs:guide-user:installation:generic.flashing|Install OpenWrt (generic explanation)]]
 +
 +FIXME Please add the installation procedure here.
 +
 +
 +**Important Information** 
 +
 +| {{:meta:48px-dialog-warning.svg.png?nolink}} | **This router contains a hidden partition called ''board_data''. This partition contains essential information for the [[docs:techref:bootloader]] to function. A patch was introduced in trunk revision 22475 that provided support for this router by skipping over this essential area of flash.** |
 + 
 +
 +===== Hardware =====
 +
 +^ Architecture | MIPS (low endian) |
 +^ Vendor       | Broadcom   
 +^ Bootloader   | CFE 1.0.37 | 
 +^ System-On-Chip | BCM4704KFBG | 
 +^ Processor    | BCM3302 v0.6  | 
 +^ CPU Speed    | 264 MHz | 
 +^ Flash size   | 4 MiB  | 
 +^ RAM size     | 16 MiB | 
 +^ Wireless     | BCM4321 b/g/n Wireless (v1:mini-PCI card, v2:integrated) | 
 +^ Ethernet     | BCM5325 | 
 +^ USB          | No  | 
 +^ Serial       | Yes | 
 +
 +==== Circuit board - v2 ====
 +{{:oldwiki:openwrtdocs:hardware:netgear:wnr834bv2_internals.jpg?400}}
 +
 +==== Pads on PCB - v2 ====
 +
 +There are 3 sets of pads on the PCB of the WRN834B v2:
 +  * Solder pads - JTAG - near radio shield, top edge of board. (unconfirmed)
 +  * JP1 - Serial console, 3.3V, 115200/8/N
 +  * J12 - JTAG (Confirmed working)
 +
 +{{:oldwiki:openwrtdocs:hardware:netgear:wnr834bv2_tsop_jtag_180.jpg?400}}
 +
 +=== JP1 ===
 +
 +3.3v TTL Serial, 1 row of six pins
 +
 +| Pin 1   | 3.3V   |
 +| Pin 2   | RXD    |
 +| Pin 3   | n/c    |
 +| Pin 4   | n/c    |
 +| Pin 5   | TXD    |
 +| Pin 6   | GND    |
 +
 +=== J12 ===
 + 
 +10-pin JTAG, 2 rows of 5 pins
 +
 +R374 through R378 and R343 remain un-populated
 +
 +^ Pin 10   ^ GND   ^ Pin 9   ^ TCK    |
 +^ Pin 8    ^ GND   ^ Pin 7   ^ TMS    |
 +^ Pin 6    ^ GND   ^ Pin 5   ^ TDO    |
 +^ Pin 4    ^ GND   ^ Pin 3   ^ TDI    |
 +^ Pin 2    ^ GND   ^ Pin 1   ^ TRST   |
 +
 +
 +=== Solder pads ===
 +
 +JTAG, 5 large pads
 +
 +^ R470   ^ TCK    |
 +^ R471   ^ TMS    |
 +^ R472   ^ TDO    |
 +^ R473   ^ TDI    |
 +^ n/a    ^ TRST   |
 +
 +==== Circuit board - v1 ====
 +{{:oldwiki:openwrtdocs:hardware:netgear:wnr834bv1_internals.jpg?400}}
 +
 +==== Pads on PCB - v1 ====
 +There is 1 set of holes on the PCB of the WRN834B v1:
 +  * JP1 - Serial console, 3.3v, 115200/8/N
 +  * There are no obvious or labeled solder pads for JTAG on the v1 circuit board.  There are numerous small test points labeled TPnn on both sides of the board which may provide JTAG capability. The vacant mini-PCI pads on top of the board are another possibility.
 +
 +
 +=== JP1 ===
 +
 +3.3V TTL Serial
 +
 +| Pin 1   | GND    |
 +| Pin 2   | TXD    |
 +| Pin 3   | RXD    |
 +| Pin 4   | 3.3V   |
 +
 +
 +==== TJTAG command parameters ====
 +
 +If you were to somehow erase the board_data partition, this command will restore the data. 
 +
 +<code>
 +-flash:custom /window:1fc00000 /start:1ffe0000 /length:10000
 +</code>
 +
 +===== Tags =====
 +{{tag>bcm47xx bcm4704 4flash 16ram}}
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