LMK05318B: packet loss at HT

[FAE] Andrew Wang

Part Number: LMK05318B
Other Parts Discussed in Thread: LMK05318

Hi Team,

During a HT test, customer found LMK05318B has much worse packet loss problem than RT,

HT test condition is: while CHAMBER 65°C, LMK05318B surface temp 88°C

In the end, I found customer uses LMK05318 register setting to program into LMK05318B, customer thought they are bom to bom device.

After helping re-generate register file in TICS - LMK-05318B, packet loss problem resolved.

Customer would like to understand what could be the root cause. (I was guessing very small output freq diffrence and getting worse at HT?)

Thanks for explain in detail, customer needs it, thanks.

Andrew

LMK05318B MOXA (156.25M + 125M_10ppm) (to Andy Chen).tcs

Fullscreen HexRegisterValues (156.25M_0ppm + 125M_10ppm) (to Andy Chen).txt Download

R0	0x000010
R1	0x00010B
R2	0x000235
R3	0x000332
R4	0x000404
R5	0x00050E
R6	0x000617
R7	0x00078E
R8	0x000802
R10	0x000AC8
R11	0x000B00
R12	0x000C1B
R13	0x000D08
R14	0x000E00
R15	0x000F00
R16	0x001000
R17	0x00111D
R18	0x0012FF
R19	0x001308
R20	0x001420
R21	0x001501
R22	0x001600
R23	0x001755
R24	0x001855
R25	0x001900
R26	0x001A00
R27	0x001B00
R28	0x001C01
R29	0x001D13
R30	0x001E40
R32	0x002044
R35	0x002300
R36	0x002403
R37	0x002500
R38	0x002600
R39	0x002703
R40	0x002803
R41	0x002900
R42	0x002A11
R43	0x002BC2
R44	0x002C00
R45	0x002D03
R46	0x002E11
R47	0x002F07
R48	0x003050
R49	0x00314A
R50	0x003200
R51	0x003318
R52	0x003418
R53	0x00350F
R54	0x003690
R55	0x003710
R56	0x00380E
R57	0x003990
R58	0x003A0E
R59	0x003B90
R60	0x003C0E
R61	0x003D90
R62	0x003E0E
R63	0x003F90
R64	0x004000
R65	0x004100
R66	0x004200
R67	0x00430E
R68	0x004408
R69	0x004500
R70	0x004600
R71	0x004700
R72	0x004833
R73	0x004900
R74	0x004A00
R75	0x004B00
R76	0x004C00
R77	0x004D0F
R78	0x004E00
R79	0x004F11
R80	0x005080
R81	0x00510A
R82	0x005200
R83	0x00530E
R84	0x005410
R85	0x00555D
R86	0x005600
R87	0x00571E
R88	0x005884
R89	0x005982
R90	0x005A00
R91	0x005B14
R92	0x005C00
R93	0x005D0E
R94	0x005E10
R95	0x005F5D
R96	0x006000
R97	0x00611E
R98	0x006284
R99	0x006382
R100	0x006428
R101	0x006501
R102	0x006622
R103	0x00670F
R104	0x00681F
R105	0x006905
R106	0x006A00
R107	0x006B64
R108	0x006C00
R109	0x006D32
R110	0x006E33
R111	0x006FC2
R112	0x007000
R113	0x00713C
R114	0x007200
R115	0x007303
R116	0x007400
R117	0x007500
R118	0x007600
R119	0x007700
R120	0x007800
R121	0x007900
R122	0x007A00
R123	0x007B28
R124	0x007C00
R125	0x007D11
R126	0x007E79
R127	0x007F7A
R128	0x008000
R129	0x008101
R130	0x008200
R131	0x008301
R132	0x008401
R133	0x008577
R134	0x008600
R135	0x008728
R136	0x008801
R137	0x008986
R138	0x008AF1
R139	0x008B03
R140	0x008C02
R141	0x008D00
R142	0x008E01
R143	0x008F01
R144	0x009077
R145	0x009101
R146	0x009289
R147	0x009320
R149	0x00950D
R150	0x009600
R151	0x009701
R152	0x00980D
R153	0x009929
R154	0x009A24
R155	0x009B32
R156	0x009C01
R157	0x009D00
R158	0x009E00
R159	0x009F00
R160	0x00A0FC
R161	0x00A132
R162	0x00A200
R164	0x00A400
R165	0x00A500
R167	0x00A701
R178	0x00B200
R180	0x00B400
R181	0x00B500
R182	0x00B600
R183	0x00B700
R184	0x00B800
R185	0x00B905
R186	0x00BA08
R187	0x00BB00
R188	0x00BC00
R189	0x00BD00
R190	0x00BE2C
R191	0x00BF00
R192	0x00C050
R193	0x00C100
R194	0x00C200
R195	0x00C300
R196	0x00C400
R197	0x00C51D
R198	0x00C600
R199	0x00C700
R200	0x00C81D
R201	0x00C900
R202	0x00CA00
R203	0x00CB00
R204	0x00CC15
R205	0x00CD00
R206	0x00CE00
R207	0x00CF15
R208	0x00D000
R209	0x00D114
R210	0x00D200
R211	0x00D316
R212	0x00D400
R213	0x00D514
R214	0x00D600
R215	0x00D716
R216	0x00D80F
R217	0x00D900
R218	0x00DA00
R219	0x00DB19
R220	0x00DC6E
R221	0x00DD00
R222	0x00DE03
R223	0x00DF0D
R224	0x00E047
R225	0x00E100
R226	0x00E200
R227	0x00E319
R228	0x00E46E
R229	0x00E500
R230	0x00E603
R231	0x00E70D
R232	0x00E847
R233	0x00E90A
R234	0x00EA0A
R235	0x00EB00
R236	0x00ECC3
R237	0x00ED50
R238	0x00EE00
R239	0x00EF00
R240	0x00F0C3
R241	0x00F150
R242	0x00F200
R243	0x00F300
R244	0x00F400
R249	0x00F921
R250	0x00FA00
R251	0x00FB13
R252	0x00FC2C
R253	0x00FD00
R254	0x00FE00
R255	0x00FF00
R256	0x010000
R257	0x010101
R258	0x010200
R259	0x010301
R260	0x010402
R261	0x010580
R262	0x010600
R263	0x010700
R264	0x010800
R265	0x010900
R266	0x010AC8
R267	0x010BA0
R268	0x010C0C
R269	0x010D0A
R270	0x010E02
R271	0x010F14
R272	0x011000
R273	0x011100
R274	0x011200
R275	0x01130E
R276	0x01140C
R277	0x01150E
R278	0x011609
R279	0x011708
R280	0x011809
R281	0x011907
R282	0x011A0D
R283	0x011B07
R284	0x011C1E
R285	0x011D1E
R286	0x011E02
R287	0x011F30
R288	0x012000
R289	0x0121EE
R290	0x012202
R291	0x0123CA
R292	0x012409
R293	0x012501
R294	0x012600
R295	0x01272C
R296	0x012808
R297	0x01290C
R298	0x012A08
R299	0x012B01
R300	0x012C00
R301	0x012D1C
R302	0x012E20
R303	0x012F01
R304	0x013001
R305	0x013100
R306	0x013200
R307	0x013300
R308	0x013410
R309	0x0135AA
R310	0x0136AA
R311	0x0137AA
R312	0x0138AA
R313	0x0139AA
R314	0x013AFF
R315	0x013BFF
R316	0x013CFF
R317	0x013DFF
R318	0x013EFF
R319	0x013F03
R320	0x014000
R321	0x01410A
R322	0x014200
R323	0x014324
R324	0x01449F
R325	0x014500
R326	0x014600
R327	0x014798
R328	0x014896
R329	0x014980
R330	0x014A00
R331	0x014B64
R332	0x014C00
R333	0x014D03
R334	0x014E0D
R335	0x014F40
R336	0x015000
R337	0x015198
R338	0x015296
R339	0x015300
R340	0x015400
R341	0x015500
R342	0x015600
R343	0x015700
R344	0x015800
R345	0x015900
R346	0x015A02
R347	0x015B00
R348	0x015C00
R349	0x015D00
R350	0x015E00
R351	0x015F00
R352	0x016000
R357	0x016528
R367	0x016F00
R411	0x019B0C

over 4 years ago

0 Derek Payne over 4 years ago

TI__Mastermind 33730 points

Andy,

Can you provide both the original (LMK05318) and the corrected file, and clearly identify which one is which? Without both files, it will be difficult to determine a root cause.

Regards,

Derek Payne

0 [FAE] Andrew Wang over 4 years ago in reply to Derek Payne

TI__Genius 10685 points

Hi Derek,

Thanks.

Customer gave me this file below only.

Fullscreen HexRegisterValues_new lvds_0ppm_10ppm (from Andy Chen).txt Download

R0	0x000000
R1	0x00010B
R2	0x000235
R3	0x000300
R4	0x000400
R5	0x000500
R6	0x000600
R7	0x000700
R8	0x000802
R10	0x000A80
R11	0x000B30
R12	0x000C1B
R13	0x000D00
R14	0x000E00
R15	0x000F00
R16	0x001000
R17	0x00111D
R18	0x0012FF
R19	0x001300
R20	0x001400
R21	0x001501
R22	0x001600
R23	0x001755
R24	0x001855
R25	0x001900
R26	0x001A00
R27	0x001B00
R28	0x001C01
R29	0x001D13
R30	0x001E40
R32	0x002044
R35	0x002300
R36	0x002403
R37	0x002500
R38	0x002600
R39	0x002702
R40	0x002800
R41	0x002900
R42	0x002A01
R43	0x002BC2
R44	0x002C04
R45	0x002D00
R46	0x002E00
R47	0x002F07
R48	0x003046
R49	0x00314A
R50	0x003200
R51	0x003318
R52	0x003418
R53	0x00350F
R54	0x003690
R55	0x003710
R56	0x003815
R57	0x003990
R58	0x003A15
R59	0x003B90
R60	0x003C15
R61	0x003D90
R62	0x003E15
R63	0x003F90
R64	0x004000
R65	0x004100
R66	0x004200
R67	0x004315
R68	0x004408
R69	0x004500
R70	0x004600
R71	0x004700
R72	0x00483E
R73	0x004900
R74	0x004A00
R75	0x004B00
R76	0x004C00
R77	0x004D0F
R78	0x004E00
R79	0x004F11
R80	0x005000
R81	0x00510A
R82	0x005200
R83	0x005307
R84	0x005433
R85	0x005534
R86	0x005600
R87	0x00571E
R88	0x005884
R89	0x005983
R90	0x005A00
R91	0x005B14
R92	0x005C00
R93	0x005D07
R94	0x005E33
R95	0x005F34
R96	0x006000
R97	0x00611E
R98	0x006284
R99	0x006383
R100	0x00644A
R101	0x006503
R102	0x006611
R103	0x00670F
R104	0x006818
R105	0x006909
R106	0x006A00
R107	0x006B64
R108	0x006C01
R109	0x006DFC
R110	0x006EA0
R111	0x006F55
R112	0x007055
R113	0x007155
R114	0x007255
R115	0x007303
R116	0x007401
R117	0x007500
R118	0x007600
R119	0x007700
R120	0x007800
R121	0x007900
R122	0x007A00
R123	0x007B6A
R124	0x007CAA
R125	0x007DA9
R126	0x007E97
R127	0x007F36
R128	0x008000
R129	0x008106
R130	0x008200
R131	0x008301
R132	0x008401
R133	0x008577
R134	0x008600
R135	0x008758
R136	0x008800
R137	0x008939
R138	0x008AAB
R139	0x008B03
R140	0x008C02
R141	0x008D00
R142	0x008E01
R143	0x008F01
R144	0x009077
R145	0x009105
R146	0x009281
R147	0x009328
R149	0x00950D
R150	0x009629
R151	0x009701
R152	0x00980D
R153	0x009929
R154	0x009A24
R155	0x009BD1
R156	0x009C08
R157	0x009D00
R158	0x009E00
R159	0x009F00
R160	0x00A0FC
R161	0x00A116
R162	0x00A216
R164	0x00A400
R165	0x00A500
R178	0x00B200
R180	0x00B400
R181	0x00B500
R182	0x00B600
R183	0x00B700
R184	0x00B800
R185	0x00B905
R186	0x00BA01
R187	0x00BB00
R188	0x00BC00
R189	0x00BD00
R190	0x00BE01
R191	0x00BF00
R192	0x00C050
R193	0x00C101
R194	0x00C201
R195	0x00C300
R196	0x00C400
R197	0x00C51C
R198	0x00C600
R199	0x00C700
R200	0x00C81C
R201	0x00C900
R202	0x00CA00
R203	0x00CB00
R204	0x00CC16
R205	0x00CD00
R206	0x00CE00
R207	0x00CF16
R208	0x00D000
R209	0x00D103
R210	0x00D200
R211	0x00D303
R212	0x00D400
R213	0x00D503
R214	0x00D600
R215	0x00D703
R216	0x00D800
R217	0x00D900
R218	0x00DA02
R219	0x00DB11
R220	0x00DCD2
R221	0x00DD00
R222	0x00DE02
R223	0x00DF08
R224	0x00E0D6
R225	0x00E100
R226	0x00E202
R227	0x00E311
R228	0x00E4D2
R229	0x00E500
R230	0x00E602
R231	0x00E708
R232	0x00E8D6
R233	0x00E900
R234	0x00EA00
R235	0x00EB00
R236	0x00EC00
R237	0x00ED00
R238	0x00EE00
R239	0x00EF00
R240	0x00F000
R241	0x00F100
R242	0x00F200
R243	0x00F300
R244	0x00F400
R249	0x00F900
R250	0x00FA00
R251	0x00FB01
R252	0x00FC2D
R253	0x00FD00
R254	0x00FE00
R255	0x00FF00
R256	0x010000
R257	0x01013F
R258	0x010200
R259	0x01033F
R260	0x010402
R261	0x010580
R262	0x010600
R263	0x010700
R264	0x010800
R265	0x010931
R266	0x010A38
R267	0x010BA0
R268	0x010C04
R269	0x010D00
R270	0x010E02
R271	0x010FCA
R272	0x011000
R273	0x011100
R274	0x011200
R275	0x01130D
R276	0x01140F
R277	0x01150D
R278	0x01160A
R279	0x011708
R280	0x01180A
R281	0x011907
R282	0x011A08
R283	0x011B07
R284	0x011C1E
R285	0x011D1E
R286	0x011E03
R287	0x011FEC
R288	0x012000
R289	0x012170
R290	0x012202
R291	0x01236B
R292	0x012409
R293	0x012501
R294	0x012600
R295	0x01272C
R296	0x012806
R297	0x012902
R298	0x012A06
R299	0x012B01
R300	0x012C00
R301	0x012D1D
R302	0x012E22
R303	0x012F00
R304	0x013002
R305	0x013100
R306	0x013200
R307	0x013303
R308	0x013413
R309	0x013580
R310	0x013600
R311	0x013700
R312	0x013800
R313	0x013900
R314	0x013A00
R315	0x013B00
R316	0x013C00
R317	0x013D00
R318	0x013E00
R319	0x013F03
R320	0x014000
R321	0x01410A
R322	0x014200
R323	0x014300
R324	0x014494
R325	0x0145D0
R326	0x014600
R327	0x014798
R328	0x014897
R329	0x014948
R330	0x014A00
R331	0x014B64
R332	0x014C00
R333	0x014D00
R334	0x014E94
R335	0x014FD0
R336	0x015000
R337	0x015198
R338	0x015297
R339	0x015348
R340	0x015400
R341	0x015500
R342	0x015600
R343	0x015700
R344	0x015800
R345	0x015900
R346	0x015A00
R347	0x015B00
R348	0x015C00
R349	0x015D00
R350	0x015E21
R351	0x015FD3
R352	0x016000
R357	0x016528
R367	0x016F28
R411	0x019B00

0 Derek Payne over 4 years ago in reply to [FAE] Andrew Wang

TI__Mastermind 33730 points

Andy,

These two files are almost completely different for both the DPLL programming and the APLL programming. Noticeably, the DPLLs in the file you provided are disabled - no reference input is being used. Meanwhile, the LMK05318 file appears to be using the DPLL. I don't understand what the intention was for the original registers, because the new registers appear to be using the device completely differently.

What was this device doing beforehand? It is definitely not doing the same thing in the new register configuration.

Regards,

Derek Payne

0 [FAE] Andrew Wang over 4 years ago in reply to Derek Payne

TI__Genius 10685 points

Hi Derek,

The register setting that used on LMK05318 was generated by another FAE who quitted, so I couldn't get tcs file to compare, thanks for checking.

Customer is not using DPLL path, only using XO = 24.576MHz path.

Could you please help to check if they are same output freq for each CH?

From screen shot, I think they are the same.

Customer would like to know if copying LMK05318 non-B register setting directly into LMK05318B, what problem do you foresee?

Thanks.

[LMK05318]

[LMK05318B]

0 Hao Z over 4 years ago in reply to [FAE] Andrew Wang

TI__Mastermind 18070 points

Hi Andrew,

LMK05318 register settings can be directly applied to LMK05318B chip, but not vice versa. A few debugging steps:

1. Check the status registers. The instructions can be found in the last page of LMK05318B wizard.

2. If everything's locked, measure the output frequency and see if the frequency was mis-caculated.

Regards,

Hao

0 [FAE] Andrew Wang over 4 years ago in reply to Hao Z

TI__Genius 10685 points

Hi Hao and Derek,

Thanks for feedback and time looking into this.

Currently we are locked at home and prohibited from visiting customer, so does customer to see us.

I will do the status check and output freq check with customer when available.

Just one quick question, if we use LMK05318 register settings directly applied to LMK05318B chip (to output 156.25M & 125M), there is 'chance' output freq could be slightly different on B-ver, this root cause finding direction should be a good start, correct?. Thanks.

Andrew

0 Hao Z over 4 years ago in reply to [FAE] Andrew Wang

TI__Mastermind 18070 points

Hi Andrew,

If you directly load the LMK05318 register settings into a LMK05318B chip, you should get exactly the same behavior. There will NOT be any frequency difference because the B version is backward compatible by design. It has more features and improvements but it can accept the non-B software without any change.

Regards,
Hao

Clock & timing

Clock & timing forum

LMK05318B: packet loss at HT