Lattice Semiconductor CertusPro-NX Usage Guide

CertusPro-NX SerDes/PCS Usage Guide
Preliminary Technical Note
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Field
Name
Access
Width
Reset
Description
"1".
1’b0 – drive "epcs_txval" low if "txval_ovrd" is set to
"1".
Table A. 126. Loopback Mode Control [rege0]
Field
Name
Access
Width
Reset
Description
[7:3]
reserved
RSVD
5
—
—
[2]
fbrc_lpbk_en
RW
1
1’b0
1’b1 – enable 64B/66B PCS loopback B.
1’b0 – do not enable 64B/66B PCS loopback B.
[1]
far_lpbk_en
RW
1
1’b0
In 8B/10B PCS mode:
1’b1 – enable far end parallel loopback.
1’b0 – do not enable far end parallel loopback.
In 64B/66B PCS mode:
1’b1 – enable loopback C.
1’b0 – do not enable loopback C.
[0]
near_lpbk_en
RW
1
1’b0
In 8B/10B PCS mode:
1’b1 – enable near end parallel loopback.
1’b0 – do not enable parallel loopback.
In 64B66B PCS mode:
1’b1 – enable loopback A.
1’b0 – do not enable loopback A.
Table A. 127. MPCS BIST Control 0 [rege1]
Field
Name
Access
Width
Reset
Description
[7:5]
bist_ptn_sel
RW
3
3’h0
BIST Pattern Selection. Specifies the selected BIST Pattern.
3’b111 – Alternate Constant Values 1 and 2
3’b110 – Constant Value 2
3’b101 – Constant Value 1
3’b100 – PRBS15
3’b011 – PRBS31
3’b010 – PRBS23
3’b001 – PRBS11
3’b000 – PRBS7
[4]
bist_rx_data_sel
RW
1
1’b0
Data receive selector. Specifies the selector where the
data is to be received.
1’b1 – data from after 8B/10B decoder.
1’b0 – data from PMA.
[3]
bist_bypass_tx_gate
RW
1
1’b0
Bypass Transmit gate.
1’b1 – force to send BIST data no matter the head is
found or not.
1’b0 – start to send BIST data after finding the head.
[2]
bist_bus8bit_sel
RW
1
1’b0
BIST bus width selector.
1’b1 – 8-bit BIST data.
1’b0 – 10-bit BIST data.
[1]
bist_mode
RW
1
1’b0
BIST mode. Specifies the BIST mode to be used.
1’b1 – Continuous BIST mode.
1’b0 – Timed BIST mode.
[0]
bist_en
RW
1
1’b0
Enable MPCS BIST. Specifies the MPCS BIST is enabled or
disabled.
1’b1 – MPCS BIST is enabled
1’b0 – MPCS BIST is disabled

Lattice Semiconductor CertusPro-NX Specifications

General

Brand	Lattice Semiconductor
Model	CertusPro-NX
Category	Computer Hardware
Language	English