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# Summary
RTL8214FC/RTL8218B (maybe generic RTL821x) Register Layout RTL8214FC/RTL8218B (maybe generic RTL821x) Register Layout
This is a sum up of what we got from the comments in the GPL sources. Additionally some SerDes registers where identified that work similar like the RTL838x/RTL839x built in SerDes. This is a sum up of what we got from the comments in the GPL sources. Additionally some SerDes registers where identified that work similar like the RTL838x/RTL839x built in SerDes.
# Basic registers
These basic registers are organized in pages of 32. Each page knows registers 0x00-0x1F These basic registers are organized in pages of 32. Each page knows registers 0x00-0x1F
Page | Register | Bits | Feature | Documentation Page | Register | Bits | Feature | Documentation
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**Page** | **Register** | **Bits** | **unknown** | **Page** | **Register** | **Bits** | **unknown** |
0xb82 | 0x10 | 04:04 | ENABLE_PATCH | patch step 1: set to 1 to gain SerDEs access, go over to 0xb80:0x10 0xb82 | 0x10 | 04:04 | ENABLE_PATCH | patch step 1: set to 1 to gain SerDEs access, go over to 0xb80:0x10
# Special registers
These additional/internal registers are organized in pages of 8. Each page knows registers 0x10-0x17. Their "absoulte" address can be calucalted by the formula page * 8 + (register - 16). It seems as if they are for the whole chip package and only accessed via the first port. These additional/internal registers are organized in pages of 8. Each page knows registers 0x10-0x17. Their "absoulte" address can be calucalted by the formula page * 8 + (register - 16). It seems as if they are for the whole chip package and only accessed via the first port.
Page | Register | Bits | Feature | Documentation Page | Register | Bits | Feature | Documentation