TX Driver Swing Control

Versal ACAP GTM Transceivers Architecture Manual (AM017)

Document ID

AM017

Release Date

2022-04-27

Revision

1.0 English

Driver swing can be controlled through CH*_TXMAINCURSOR[6:0]. The default is user specified. All values listed below are in mV_PDD and are typical values.

Table 1. Transmitter Swing Control
[6:0]	Swing (mV_PDD)
`7'b0101010`	507
`7'b0101011`	515
`7'b0101100`	527
`7'b0101101`	540
`7'b0101110`	552
`7'b0101111`	560
`7'b0110000`	569
`7'b0110001`	577
`7'b0110010`	585
`7'b0110011`	594
`7'b0110100`	602
`7'b0110101`	614
`7'b0110110`	626
`7'b0110111`	638
`7'b0111000`	650
`7'b0111001`	662
`7'b0111010`	673
`7'b0111011`	685
`7'b0111100`	696
`7'b0111101`	710
`7'b0111110`	724
`7'b0111111`	738
`7'b1000000`	752
`7'b1000001`	765
`7'b1000010`	777
`7'b1000011`	790
`7'b1000100`	802
`7'b1000101`	814
`7'b1000110`	826
`7'b1000111`	838
`7'b1001000`	850
`7'b1001001`	860
`7'b1001010`	871
`7'b1001011`	881
`7'b1001100`	892
`7'b1001101`	902
`7'b1001110`	915
`7'b1001111`	927
`7'b1010000`	940
`7'b1010001`	952
`7'b1010010`	961
`7'b1010011`	970
`7'b1010100`	980
`7'b1010101`	989
`7'b1010110`	998
The peak-to-peak differential voltage is defined when CH_TXPOSTCURSOR = `5'b00000`, CH_TXPRECUSOR = `5'b00000`, CH_TXPRECUSOR2 = `5'b00000`, and CH_TXPRECUSOR3 = `5'b00000`. The output swing described above is obtained using settings from the Wizard design, and the recommended values from the Wizard should not be changed.