AN84 データシートの表示（PDF） - Silicon Laboratories
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AN84 Datasheet PDF : 26 Pages
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AN84
APPENDIX B—HYBRID COEFFICIENT LOOKUP TABLES
Tables 1–14 (for Rev C and prior versions of the Si3019) and Tables 15–28 (for Rev E and later versions of the
Si3019) provide fixed digital hybrid coefficients to best match the line load with specific EIA line models. For this
calculation, the EIA line model was incorporated into the HL(w) model. The first column shows which line type was
used to calculate the hybrid coefficient. The remaining columns display the hybrid coefficients (Registers 45–52).
Table 1. ACIM = 0000 and CO Termination = 900 Ω + 2.16 µF
Line Type
EIA 0
EIA 1
EIA 2
EIA 3
EIA 4
EIA 5
EIA 6
EIA 7
2000 ft. 22 awg
2000 ft. 24 awg
2000 ft 26 awg
Hybrid Coefficient #
1
2
3
4
5
6
7
8
248 249
3
254 254
0
254
0
251 240 255
5
250
2
254 255
2
240 238
7
253 254
2
254
5
239 235
7
252 254
2
254
1
242 240
1
252 255
0
255
7
244 233
1
250 253
0
254
4
244 228
6
7
247
1
253
248 230
8
18 234
2
1
255
253 242 254
5
250
2
255 255
252 240 254
5
250
2
254 255
251 240 255
5
250
2
254 255
Table 2. ACIM = 0000 and CO Termination = 600 Ω
Line Type
EIA 0
EIA 1
EIA 2
EIA 3
EIA 4
EIA 5
EIA 6
EIA 7
2000 ft. 22 awg
2000 ft. 24 awg
2000 ft 26 awg
Hybrid Coefficient #
1
2
3
4
5
6
7
8
0
0
0
0
0
0
0
0
255 247 255
4
253
2
0
0
2
243 241
8
253 255
2
254
5
240 238
9
252 255
2
254
1
242 241
2
253 255
1
255
7
244 234
2
251 254
1
254
4
244 228
6
7
247
1
253
248 230
8
18 234
2
1
255
2
250 254
4
253
1
0
0
1
249 254
4
253
1
0
0
255 247 255
4
253
2
0
0
10
Rev. 0.6
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