Property:RTL86

---

BoxMatrix >> Components >> RTL86

@ BoxMatrix   -   IRC-Chat   -   Translate: de es fr it nl pl

News

Selectors

Models

Accessories

Components

Environment

Config

Commands

System

Webif

Software

Develop

Lexicon

Community

Project

Media

---

Codenames

SoC-Chips

RAM-Chips

Flash-Chips

FPGA-Chips

FON-Chips

DECT-Chips

WLAN-Chips

LAN-Chips

USB-Chips

Trafo-Chips

PSU-Chips

Misc-Chips

ALL-Chips

---

Chip-Codename

Codename:	RTL86	Wiki	Freetz	IPPF	whmf	PDF	Web
Creator:	Realtek	Wiki	Freetz	IPPF	whmf	PDF	Web
Vendor:	Realtek	Wiki	Freetz	IPPF	whmf	PDF	Web
Purpose:	DSL-SoC
Description:	1000MHz Quad Core MIPS32 / InterAptiv 34Kc Network SoC + VDSL frontend

Chip-Details

RTL86 is the preliminary codename used here for the RTL8685 / RTL8275 VDSL chipset, until a better codename is found.

This is originally a standalone router chipset used in many third party routers, like in this example design.
AVM uses it as the VDSL modem frontend of the FRITZ!Box 7520 v2 , the only model with CONFIG_DSL_RTL8685SB = 'y'.

There's no datasheet in the net about this chipset. Realtek only provides info for the old RTL8670 / RTL8270 ADSL chipset.

The RTL8685SB is a networking SoC, the RTL8275 is the matching VDSL analog frontend.
According to this bootlog the RTL8685SB is a quad core 1000 MHz SoC with this ID:

CPU0 revision is: 0001a120 (MIPS interAptiv (multi))

This is exactly the same ID the dual core Seale GRX and the quad core Falcon PRX chips report.
So this is likely also a dual core CPU with hyperthreading each, like the Falcon.

While AVM usually spends some RAM to a secondary CPU for the OS they did not do it in the 7520v2.

The following was my first assumption which is WRONG:

Maybe they use the 1 MB Scratchpad RAM present in all InterAptiv cores, which is freely configurable from 4kB to 1MB

to be Instruction Scratchpad and/or Data Scratchpad RAM, intended for systems that don’t have RAM.

See chapter 6.2.1 of this PDF explaining Linking for Scratchpad RAM on InterAptiv cores.

1 MB RAM is ok for some modem firmware, but not enough for a Linux (filesys+kernel+ram).

That is why AVM runs all FRITZ!OS glue code on the main CPU of the 7520v2.

Fact is:

The 7520v2 runs a second linux for the Realtek frontend, located in linux.bin and booted by boot.bin.
It consists on a 2.7 MB LZMA compressed kernel which decompresses to 6.9 MB and a pretty compact 800 kB squashfs.
This requires at least 8 MB of RAM to boot. Either it's onchip memory or they found a way to share the RAM between both Linuxes (unlikely).

supportdata shows the Realtek specific modules rtl_nfbi.ko and rtk_atm.ko and the daemons avm2rtk_xdsld and controllerd.

More details once 7520v2 Firmware-Scans for both Linuxes are finished.

GPL-Browser

Unfortunately there's no RTL86 source yet.

Daily updated index of all RTL86 Tarballs unpacked to the GPL-Browser. Last update: 2024-11-21 05:07 GMT.
The Browse column lists the respective subdirectory of the gpl.boxmatrix.info service.
The SoC column lists the Chip-Codenames, the Model column lists the nicks of the Box-Models.
The Diff column links the comparison of the AVM Kernel to the pristine original from Kernel.org.
The Download column links the full tarball the respective directory content is extracted from.

Browse	SoC	Arch	Model	Firmw	Diff	Download
0 partially unpacked RTL86 tarballs

Firmware

This is a subset of the Binary-Files section, filtered for '*RTL86*' binaries or descriptions.

Daily updated index of all binaries found scanning Firmware-Probes . Last update: 2024-11-21 05:56 GMT.
The label (static) in the Binary column shows there are other objects in this wiki using this name.
The Mod column shows the amount of models using the respective file. Click the column header to sort by this number.
You can hover or click a possible Link in the Type column to see the target of that link.

Binary	Mod	Firmware	Description	Path	Size/Bytes	Type	Origin
boot.bin	1	7.30 - 8.00	Bootloader for RTL86 modem linux.	/etc/fw, <kernelroot>	30.9k	Blob	AVM
linux.bin	1	7.30	Kernel + filesystem of the RTL86 modem linux.	/etc/fw	3.5M	Blob	AVM
vm.img	1	7.31 - 8.00	Kernel + filesystem of the RTL86 modem linux.	<kernelroot>	3.5M - 4.3M	Blob	AVM
3 files

Modules

This is a subset of the Kernel-Modules section, filtered for '*RTL86*' modules or descriptions.

Daily updated index of all kernel modules found scanning Firmware-Probes . Last update: 2024-11-21 05:56 GMT.
The label (module) in the Module column shows there are other objects in this wiki using this name.
The Mod column shows the amount of models using the respective module. Click the column header to sort by this number.
You can hover or click a possible Link in the Type column to see the target of that link.

Module	Mod	Firmware	Description	Path	Size/Bytes	Type	Origin
rtl_nfbi.ko	1	7.30 - 8.00	Realtek RTL86 NFBI glue	./kernel/drivers/char	23.8k - 25.2k	Mod	AVM
1 kernel modules

Kernel-Config

This is a subset of the Kernel-Config section, filtered for '*RTL86*' variables or descriptions.

Daily updated index of all kernel config variables found scanning Firmware-Probes . Last update: 2024-11-21 05:20 GMT.
The label (kerncfg) in the Variable column shows there are other objects in this wiki using this name.
The Mod column shows the amount of models using the respective variable. Click the column header to sort by this number.

Variable	Mod	Firmware	Value	Description	Kernel	Origin
CONFIG_MODULE_BUILD_IN	1	7.62 - 7.90	y	Realtek RTL86900 SDK	3.18.24	Linux
CONFIG_RTL8672	1	7.62 - 7.90	y	[System Configuration]	3.18.24	Linux
CONFIG_RTL867X_IPV4_ACC_NONE	1	7.62 - 7.90	y	No acceleration	3.18.24	Linux
CONFIG_RTL8686	1	7.62 - 7.90	y	[System Configuration]	3.18.24	Linux
CONFIG_RTL8686NIC	1	7.62 - 7.90	y	Realtek RTL8686 NIC Ethernet support (re8686_ext.ko)	3.18.24	Linux
CONFIG_RTL8686_SWITCH	1	7.62 - 7.90	y	Apollo switch driver support	3.18.24	Linux
6 config variables

Chip-Variants

Chips using the codename or family name RTL86:
Selectors >> Components-Selector >> WLAN-Chips >> RTL86

Components-Selector	Cat.	Family	Coden.	Purpose	Iface	Creator	Vendor	Description
RTL8275	SoC	RTL827x	RTL86	DSL-PHY		Realtek	Realtek	VDSL Frontend for the RTL8685
RTL8685SB	SoC	RTL868x	RTL86	Network-SoC		Realtek	Realtek	1000MHz Quad Core MIPS32 / InterAptiv 34Kc Network SoC
2 RTL86 chips

Model-Matrix

Box-Models and Accessories using one of the RTL86 variants listed above:
Selectors >> Chips-Selector >> WLAN-Chips >> RTL86

Chips-Selector	SoC	RAM	Flash	FPGA	FON	DECT	WLAN	LAN	USB	PSU	Misc
FRITZ!Box 7520 v2	RTL8275, RTL8685SB	NT5CC128M16JR-EK	MX30LF1G28AD-TI		LM324, BCP53-16	SC14448-B96R101QNC	IPQ4019-2VV	QCA8075-0VV
FRITZ!Box 7530 v2	RTL8275, RTL8685SB	NT5CC128M16JR-EK	MX30LF1G28AD-TI		LM324, BCP53-16	SC14448-B96R101QNC	IPQ4019-2VV	QCA8075-0VV
2 RTL86 models

Feature-Matrix

Features of Box-Models and Accessories using one of the RTL86 variants listed above:

S €	Model Languages, Brandings	Internet [Annex]	LAN Ports	WLAN 802.11	PSTN Lines	Phones	SoC Clock	RAM	Flash	USB Host	Image
	FRITZ!Box 7520 v2 de, en, es, fr, it, nl, pl 1und1, avm, avme	SVect B, J USB-LTE WLAN	100M: 2 Gbit: 2	866 Mb +400 Mb 2.4GHz 5GHz	-	Analog: 1 DECT: 6	Dakota 717 MHz RTL86 1000 MHz	256 MB	128 MB	Ports: 1 USB: 2.0
	FRITZ!Box 7530 v2	SVect USB-LTE WLAN	Gbit: 4	866 Mb +400 Mb 2.4GHz 5GHz	-	Analog: 1 DECT: 6	Dakota 717 MHz RTL86 1000 MHz	256 MB	128 MB	Ports: 1 USB: 3.0	-

Legend:

• = all variants of this model are still supported
• = some variants of this model are end of support
• = all variants of this model are end of support
• = at least one variant of this model is still sold
• = no variant of this model is sold any more (or not yet)
• = a future model which is not yet sold or supported

This info is updated daily from the Part-Numbers section in each Box-Models article.

Gallery

If you want to extend the gallery with own work then please get in touch. See also the Photography-Inspiration article.

SMW-Browser

Property:RTL86

Information is currently being retrieved from the backend.