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toh:bt:homehub_v4a
Table of Contents
BT HomeHub 4.0 Type A
This device is currently not supported
Following the sad closure of http://psidoc.com, all members of the BT Home Hub Openwrt community are now encouraged to join in ongoing development efforts, concentrated on the Home Hub 4A, at http://openwrt.ebilan.co.uk/viewforum.php?f=6
Hardware
Info
| Architecture: | MIPS |
| Vendor: | Lantiq |
| Bootloader: | U-Boot |
| System-On-Chip: | Lantiq Xway ARX368 PSB 50368 EL (MIPS 34Kc) |
| CPU/Speed: | 500 MHz |
| NOR Flash: | n/a |
| NAND Flash: | 128MiB Samsung K9F1G08U0D |
| RAM Chip: | ESMT M14D1G1664A 2.5B |
| RAM Specs: | DDR2 128MiB @ 250 MHz |
| Wireless: | Lantiq WAVE 300  |
| Ethernet: | 1x 10/100/1000, 3x 10/100 (1x external 10/100/1000 XWAY PEF7071 via RGMII for WAN, 1x internal 10/100/1000 PHY for LAN4, 3x internal 10/100 PHY for LAN1-3) |
| Switch: | |
| xDSL: | |
| USB: | 1x USB 2.0 |
| DECT: | no |
| Serial: | Yes |
| GPIO Buttons: | WPS, Restart and Reset buttons |
| Power: | External 12V 1.5A |
PCB Photos
serial
Removing the heatspreader is not required for accessing the RX/TX/boot_sel pins.
However, soldering to SMD solder points is required.
| Resistor number | Function | Info |
| unmarked | Serial TX | above R322 (left circle in the image) |
| unmarked | Serial RX | below the C196 and C194 markings (right circle in the image) |
| R158 | boot_sel2 | Solder to the top pad |
Serial uses Baud rate 115200.
To boot via UART you need to pull boot_sel2 (results in CFG 0x4) to GND.
toh/bt/homehub_v4a.txt · Last modified: 2017/05/19 23:57 by martin.blumenstingl
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