Achronix Speedster22i SerDes - Manual (Page 90)

Entry field Available Options Choice made
Eanble ALT 0 *3
• True
• False
True
ALT SKIP Word 0 *3
Text field to select user-defined
value (available only when
Enable ALT 1 is selected
10’h17C
SKIP Word 1 *3
Text field to select user-defined
value
N/A since 802.3ae is chosen as
SKIP Mode
Eanble ALT 1 *3
• True
• False
N/A since 802.3ae is chosen as
SKIP Mode
ALT SKIP Word 1 *3
Text field to select user-defined
value (available only when
Enable ALT 0 is selected
N/A since 802.3ae is chosen as
SKIP Mode
SKIP Word 2 *3
Text field to select user-defined
value
N/A since 802.3ae is chosen as
SKIP Mode
Eanble ALT 2 *3
• True
• False
N/A since 802.3ae is chosen as
SKIP Mode
ALT SKIP Word 2 *3
Text field to select user-defined
value (available only when
Enable ALT 2 is selected
N/A since 802.3ae is chosen as
SKIP Mode
Transition Density Checker
(TDC)
Enable Transition Density
Checker *3
• True *1
• False
False
Max Count *3
Text field for user-defined value
(available only when TDC is
enabled)
N/A (TDC not enabled)
Max Count Scaling Factor *3
• x1
• x2
• x4
• x8
• x16
N/A (TDC not enabled)
*1 If True is selected, the ACE GUI will add one input port (ch0_i_RX_tdc_clr) and one output port
(ch0_o_tdc_det) to the wrapper RTL. This change is reflected in IP Diagram sub-window.
*2 When EFIFO enabled, four additional EFIFO related ports are added to wrapper
(ch0_o_efifo_ovr_flw, ch0_o_efifo_skp_add, ch0_o_efifo_skp_del and ch0_o_efifo_und_run).
*3 Further descriptions on these functions are presented in Chapter-“PCS Blocks in Receiver (RX)
Data Path”
A snapshot of RX PCS Settings for the current derivative of the design is shown in “Figure 40
PCS Settings for Receiver – Configurations for Decoder and Elastic FIFO”.
90 UG028, July 1, 2014