E-Tile Transceiver PHY User Guide

ID 683723
Date 9/30/2022
Public
Document Table of Contents

9.4. Supported Data Rate Ratios for PMA Attribute Codes 0x0005 and 0x0006

Use the following table to set registers 0x85[7:0] down to 0x84[7:0] when issuing either PMA attribute code 0x0005 or 0x0006.

Table 82.  Supported Baud Rate Ratios
Ratio Supported below 15G Supported above 15G 1/2 Rate 1/4 Rate 1/8 Rate
5 Yes No No No No
8 Yes No No No No
9 Yes No No No No
10 Yes No Yes No No
11 Yes No No No No
12 Yes No No No No
13 Yes No No No No
14 Yes No No No No
15 Yes No No No No
16 Yes No Yes No No
17 Yes No No No No
18 Yes No Yes NO No
19 Yes No No No No
20 Yes No Yes Yes No
21 Yes No No No No
22 Yes No Yes No No
23 Yes No No No No
24 Yes No Yes No No
25 Yes No No No No
26 Yes No Yes No No
27 Yes No No No No
28 Yes Yes Yes No No
29 Yes No No No No
30 Yes Yes Yes No No
31 Yes No No No No
32 Yes Yes Yes Yes No
33 Yes No No No No
34 Yes Yes Yes No No
35 Yes Yes No No No
36 Yes Yes Yes Yes No
37 Yes No No No No
38 Yes Yes Yes No No
39 Yes No No No No
40 Yes Yes Yes Yes Yes
41 Yes No No No No
42 Yes Yes Yes No No
43 Yes No No No No
44 Yes Yes Yes Yes No
45 Yes Yes No No No
46 Yes Yes Yes No No
47 Yes No No No No
48 Yes Yes Yes Yes No
49 Yes No No No No
50 Yes Yes Yes No No
51 Yes No No No No
52 Yes Yes Yes Yes No
53 Yes No No No No
54 Yes Yes Yes No No
55 Yes Yes No No No
56 Yes Yes Yes Yes No
57 Yes No No No No
58 Yes Yes Yes No No
59 Yes No No No No
60 Yes Yes Yes Yes No
61 Yes No No No No
62 Yes Yes Yes No No
63 Yes No No No No
64 Yes Yes Yes Yes Yes
65 Yes Yes No No No
66 Yes Yes Yes No No
67 Yes No No No No
68 Yes Yes Yes Yes No
69 Yes No No No No
70 Yes Yes Yes No No
71 Yes No No No No
72 Yes Yes Yes Yes Yes
73 Yes No No No No
74 Yes Yes Yes No No
75 Yes Yes No No No
76 Yes Yes Yes Yes No
77 Yes No No No No
78 Yes Yes Yes No No
79 Yes No No No No
80 Yes Yes Yes Yes Yes
81 Yes No No No No
82 Yes Yes Yes No No
83 Yes No No No No
84 Yes Yes Yes Yes No
85 Yes Yes No No No
86 Yes Yes Yes No No
87 Yes No No No No
88 Yes Yes Yes Yes Yes
89 Yes No No No No
90 Yes Yes Yes No No
91 Yes No No No No
92 Yes Yes Yes Yes No
93 Yes No No No No
94 Yes Yes Yes No No
95 Yes Yes No No No
96 Yes Yes Yes Yes Yes
97 Yes No No No No
98 Yes Yes Yes No No
99 Yes No No No No
100 Yes Yes Yes Yes No
101 Yes No No No No
102 Yes Yes Yes No No
103 Yes No No No No
104 Yes Yes Yes Yes Yes
105 Yes Yes No No No
106 Yes Yes Yes No No
107 Yes No No No No
108 Yes Yes Yes Yes No
109 Yes No No No No
110 Yes Yes Yes No No
111 Yes No No No No
112 Yes Yes Yes Yes Yes
113 Yes No No No No
114 Yes Yes Yes No No
115 Yes Yes No No No
116 Yes Yes Yes Yes No
117 Yes No No No No
118 Yes Yes Yes No No
119 Yes No No No No
120 Yes Yes Yes Yes Yes
121 Yes No No No No
122 Yes Yes Yes No No
123 Yes No No No No
124 Yes Yes Yes Yes No
125 Yes Yes No No No
126 Yes Yes Yes No No
127 Yes No No No No
128 Yes Yes Yes Yes Yes
129 Yes No No No No
130 Yes Yes Yes No No
131 Yes No No No No
132 Yes Yes Yes Yes No
133 Yes No No No No
134 Yes Yes Yes No No
135 Yes Yes No No No
136 Yes Yes Yes Yes Yes
137 Yes No No No No
138 Yes Yes Yes No No
139 Yes No No No No
140 Yes Yes Yes Yes No
141 Yes No No No No
142 Yes Yes Yes No No
143 Yes No No No No
144 Yes Yes Yes Yes Yes
145 Yes Yes No No No
146 Yes Yes Yes No No
147 Yes No No No No
148 Yes Yes Yes Yes No
149 Yes No No No No
150 Yes Yes Yes No No
151 Yes No No No No
152 Yes Yes Yes Yes Yes
153 Yes No No No No
154 Yes Yes Yes No No
155 Yes Yes No No No
156 Yes Yes Yes Yes No
157 Yes No No No No
158 Yes Yes Yes No No
159 Yes No No No No
160 Yes Yes Yes Yes Yes
161 Yes No No No No
162 Yes Yes Yes No No
163 Yes No No No No
164 Yes Yes Yes Yes No
165 Yes Yes No No No
166 Yes Yes Yes No No
167 Yes No No No No
168 Yes Yes Yes Yes Yes
169 Yes No No No No
170 Yes Yes Yes No No
171 Yes No No No No
172 Yes Yes Yes Yes No
173 Yes No No No No
174 Yes Yes Yes No No
175 Yes Yes No No No
176 Yes Yes Yes Yes Yes
177 Yes No No No No
178 Yes Yes Yes No No
179 Yes No No No No
180 Yes Yes Yes Yes No

The full rate is the transceiver line rate in bits per second. The ratios in the table are dependent on transceiver encoding, transceiver line rate and the transceiver reference clock frequency. The relation between the ratios and transceiver line rate and the transceiver reference clock frequency is shown below.

For NRZ encoding:

Ratio = (full transceiver rate in bits per second)/(transceiver reference clock frequency in MHz * fullrate_ratio) where fullrate_ratio is 1 for full rate, 1/2 for half rate and 1/4 for quarter rate and 1/8 for one eighth rate.

For PAM4 encoding:

Ratio = (full transceiver rate in bits per second)/(transceiver reference clock frequency in MHz * fullrate_ratio * 2) where fullrate_ratio is 1 for full rate, 1/2 for half rate, 1/4 for quarter rate and 1/8 for one eighth rate.

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