====== Realtek RTL8316B ======

RTL8316B is 16-port 100Mbit switch controller.

Note, that under same marking "RTL8316B" two different chips exists! See details [[#how_to_distinguish_old_and_new_flavors_of_rtl8316b_chip|here]]. 

802.1Q taging VLAN implementation on RTL8316B works fine unlike [[wiki:RTL8326]].

Here is manufacturer's product description:

[[http://www.realtek.com.tw/products/productsView.aspx?Langid=1&PNid=20&PFid=22&Level=5&Conn=4&ProdID=33]]

===== Flavors of RTL8316 chip =====

There are 4 different flavors of RTL8316 chip. See table below for more info:

|  |  **Capabilities**  ||||  |
|  **Chip name**  |  **Manageable**  |  **REP**  |  **RRCP**  |  **[[EEPROM_uC_helper|uC-free?]]**  |  **Datasheet**  |
|[[RTL8316]] |  No  |  No  |  No  |    | [[http://openrrcp.org.ru/download/datasheets/RTL8316_Datasheet_1.72.pdf]] |
|RTL8316B (Old) |  Yes  |  Yes  |  Yes  |  No  | [[http://openrrcp.org.ru/download/datasheets/RTL8316B_Datasheet_1.0.pdf]] |
|RTL8316B (New) |  Yes  |  Yes  |  No  |  No  | [[http://openrrcp.org.ru/download/datasheets/RTL8316B_Datasheet_1.2.pdf]] |
|[[RTL8316BP]] |  Yes  |  Yes  |  Yes  |  Yes  | [[http://openrrcp.org.ru/download/datasheets/RTL8316BP_Datasheet_1.2.pdf]] |




===== How to distinguish "old" and "new" flavors of RTL8316B chip =====

There are two flavors of RTL8316B chip: "old" one, which implements RRCP protocol, per-port tx/rx counters, vlans and many more feathures. "New" one has RRCP procotol disabled. However, this might not be true anymore, as some recent chips seem to have RRCP implented again (as of 10/2008).

At the moment, there is no reliable method of differentiations "old" RTL8316B chips, with working RRCP, and "new", cutted-down version. The only difference beetween versions is fabric-code:

{{http://openrrcp.org.ru/img/dlink_des1016d_d1/rtl8316b-reading-fab-code.jpg}}

Here is the list of know-working and know-non-working fab codes:

Working, "old" chips:
  * 5C474Q1, L607B
  * 62052Q1, L609B
  * 64318S1, L618B
  * 65461Q1, L622B
  * 69431S1, L651B
  * 6A001Q1, L643B
  * 66258Q1, L624B
  * 64317S1, L618B
  * 83A89Q1, L817B

Not working, "new" chips:
  * 69512Q1, L640B
  * 69542S1, L643B
  * 6C173Q1, L706B