Intel Stratix 10 - 0 x0015: TX Equalization

Description
Loads the TX EQ with the provided values.
• 0x84[7:0]: Set the TX Pre-emphasis, Post-emphasis, attenuation values in 2's
complement. Valid values are:
— Pre-emphasis tap 3: -1 to +1
— Pre-emphasis tap 2: -15 to +15
— Pre-emphasis tap 1: -10 to +10. Even values only.
— Main Tap Attenuation: 0 to +26
— Post-emphasis tap 1: -18 to +18. Even values only.
• 0x85[0]: 1'b0 to set the TX EQ with values in 0x84[7:0]
• 0x85[0]: 1'b1 to read the current EQ value. 0x84[7:0] are ignored
• 0x85[3:1]: 3'h0
• 0x85[7:4]: 4'b0000 to set/read the TX pre-emphasis tap 1 value
• 0x85[7:4]: 4'b0011 to set/read the TX pre-emphasis tap 3 value
• 0x85[7:4]: 4'b0100 to set/read the main tap value
• 0x85[7:4]: 4'b1000 to set/read the Post-emphasis tap 1 value
• 0x85[7:4]: 4'b1100 to set/read the TX pre-emphasis tap 2 value
PMA Can Be Running While Updating PMA Attribute?
Yes
Return Value {0x89[7:0],0x88[7:0]}
If 0x85[0] is 1'b1: EQ value
If 0x85[0] is 1'b0:
• 0x0015 if success
• 0x0000 if failed to apply since new EQ setting exceeds limit of allowed EQ
9.2.12. 0x0017: Error Counter Reset
Attribute Code
0x0017
Description
Resets the error counter.
• 0x84[7:0]: 8'h00
• 0x85[7:0]: 8'h00
PMA Can Be Running While Updating PMA Attribute?
Yes
9. Register Map
UG-20056 | 2019.02.04
Intel
®
Stratix
®
10 E-Tile Transceiver PHY User Guide
Send Feedback
178