L-Tile和H-Tile收发器PHY用户指南

ID 683621
日期 3/29/2021
Public
文档目录

A.4.2.3. 设置RX PMA Adaptation模式

RX PMA adaptation支持以下模式的重配置:
  • Manual CTLE, Manual VGA, DFE Off
  • Adaptive CTLE, Adaptive VGA, DFE Off
  • Adaptive CTLE, Adaptive VGA, 1-Tap Adaptive DFE
  • Adaptive CTLE, Adaptive VGA, All-Tap Adaptive DFE
名称 地址 类型 属性名 编码
Bypass DFE

0x161[6]

read-write adp_dfe_fxtap_bypass

1'b0: 不旁路DFE

1'b1: 旁路DFE

Bypass DLEV

0x161[5]

read-write adp_dlev_bypass

1'b0: 不旁路DLEV

1'b1: 旁路DLEV

Bypass VGA

0x149[7]

read-write adp_vga_bypass

1'b0: 不旁路VGA

1'b1: 旁路VGA

Bypass CTLE - AC

0x15F[3]

read-write adp_ctle_bypass_ac

1'b0: 不旁路CTLE AC Gain

1'b1: 旁路CTLE AC Gain

Bypass CTLE - EQ

0x15C[7]

read-write adp_ctle_bypass_dc

1'b0: 不旁路CTLE EQ Gain

1'b1: 旁路CTLE EQ Gain

Enable DFE adaptation

0x148[1]

read-write adp_dfe_en

1'b0: Disable

1'b1: Enable

Enable DLEV adaptation

0x148[3]

read-write adp_dlev_en

1'b0: Disable

1'b1: Enable

Enable VGA adaptation

0x148[4]

read-write adp_vga_en

1'b0: Disable

1'b1: Enable

Enable CTLE - AC adaptation

0x161[7]

read-write adp_ac_ctle_en

1'b0: Disable

1'b1: Enable

Enable CTLE - EQ adaptation

0x148[5]

read-write adp_dc_ctle_en

1'b0: Disable

1'b1: Enable

Bypass DFE taps 4-15

0x14C[6:5]

read-write adp_dfe_tap_sel_en

2'b00: Bypass no DFE taps

2'b10: Bypass DFE taps 4-15

Other encodings: Not used

Hold DFE taps 2-3

0x15D[3:1]

read-write adp_dfe_hold_sel

3'b000: Do not hold DFE taps

3'b101: Hold DFE taps 2-3

Other encodings: Not used

Enable the edge samplers sampling the edges without DFE tap 1 correction

0x131[6]

read-write pdb_edge_pre_h1

1'b0: Disable

1'b1: Enable

Enable the edge samplers sampling the edges with DFE tap 1 correction

0x131[7]

read-write pdb_edge_pst_h1

1'b0: Disable

1'b1: Enable

Enable DFE taps 4-9

0x12F[6]

read-write pdb_tap_4t9

1'b0: Disable

1'b1: Enable

Enable DFE taps 10-15

0x12F[7]

read-write pdb_tap_10t15

1'b0: Disable

1'b1: Enable

Enable DFE tap summing node

0x150[5]

read-write pdb_tapsum

1'b0: Disable

1'b1: Enable

Select CTLE AC and VGA adaptation algorithm

0x14A[6]

read-write adp_ac_ctle_cocurrent_mode_sel

无需在手动模式下设置。

1'b0: AC algorithm mode 1 (VGA adapts first, then AC)

1'b1: AC algorithm mode 2 (AC adapts first, then VGA)

Other encodings: Not used

Select CTLE EQ adaptation algorithm

0x162[3:2]

read-write adp_dc_ctle_mode_sel

无需在手动模式下设置。

2'b00: DC algorithm mode 1 (Window Minimization)

2'b10: DC algorithm mode 3 (DFE H2 Range)

Other encodings: Not used

Select CTLE EQ adaptation algorithm

0x167[6:3]

read-write adp_dc_ctle_mode0_win_start

无需在手动模式下设置。控制EQ增益自适应的窗口(直接映射)。

4'b0000: 0

until

4'b1111: 15

Select CTLE EQ adaptation algorithm

0x167[2]

read-write adp_dc_ctle_onetime

无需在手动模式下设置。将EQ gain设置成one-time。

1'b0: EQ gain不是one-time

1'b1: EQ gain是one-time

Select VGA low limit

0x158[6]

read-write adp_vga_ctle_low_limit

无需在手动模式下设置。

1'b0: 将VGA low limit设置成0

1'b1: 将VGA low limit设置成4

Select DLEV target

0x166[4:0]

read-write adp_vga_dlev_target

无需在手动模式下设置。控制VGA目标值。以mV为单位的值计算如下:4mV*(25 + direct-mapped value)