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LMX2594: MUOUT没输出

Part Number:LMX2594

  • 我们试了两种场景,先上电,再拉高CE,
    1. 直接读下寄存器,MUOUT始终低电平,能确认时芯片把它拉低的。
    2. 给R0寄存器写0x0003值,然后再写0x0000值,进行个软复位,再读寄存器,然后MUOUT仍然是低电平
FRANK1:

感谢您对TI产品的关注!关于你的咨询, 你参考一下下面的muxout的说明When CSB is HIGH, SPI activity is ignored. So the SDI and SCK signals can be shared with multiple devices but the CSB must be independent to each other.If MUXout of Chip#1 is set to readback, then MUXout is an output pin. It is normally LOW unless a "1" is being read back.

MUXout is actually sampled by the rising edge of SCK.

,

Hui Cao22:

 我现在寄存器给00写的是259F,写完之后,我回读,返回还是0x00,我们是用了2个芯片,cs就是独立的,MUOUT也是独立的

,

?? ?:

根据规格书,写寄存器顺序已修改倒序;MUOUT有返回,波形如图片,配置寄存器见附件

1、MOUT波形异常,是什么问题造成?

2、当前配置2GHz输出,帮忙检查配置是否OK

R112	0x700000
R111	0x6F0000
R110	0x6E0000
R109	0x6D0000
R108	0x6C0000
R107	0x6B0000
R106	0x6A0000
R105	0x690021
R104	0x680000
R103	0x67D555
R102	0x663F97
R101	0x650011
R100	0x640000
R99	0x632AAB
R98	0x6201A0
R97	0x610888
R96	0x600000
R95	0x5F0000
R94	0x5E0000
R93	0x5D0000
R92	0x5C0000
R91	0x5B0000
R90	0x5A0000
R89	0x590000
R88	0x580000
R87	0x570000
R86	0x565879
R85	0x55FA58
R84	0x540001
R83	0x5354C8
R82	0x523761
R81	0x510000
R80	0x504000
R79	0x4F001F
R78	0x4E0003
R77	0x4D0000
R76	0x4C000C
R75	0x4B0840
R74	0x4A0000
R73	0x49003F
R72	0x480001
R71	0x470081
R70	0x46C350
R69	0x450000
R68	0x4403E8
R67	0x430000
R66	0x4201F4
R65	0x410000
R64	0x401388
R63	0x3F0000
R62	0x3E0322
R61	0x3D00A8
R60	0x3C0000
R59	0x3B0001
R58	0x3A9001
R57	0x390020
R56	0x380000
R55	0x370000
R54	0x360000
R53	0x350000
R52	0x340820
R51	0x330080
R50	0x320000
R49	0x314180
R48	0x300300
R47	0x2F0300
R46	0x2E07FC
R45	0x2DC0DF
R44	0x2C1F21
R43	0x2BDF3B
R42	0x2A8D4F
R41	0x290000
R40	0x280000
R39	0x27FFFF
R38	0x26FFFF
R37	0x250104
R36	0x240020
R35	0x230004
R34	0x220000
R33	0x211E21
R32	0x200393
R31	0x1F43EC
R30	0x1E318C
R29	0x1D318C
R28	0x1C0488
R27	0x1B0002
R26	0x1A0DB0
R25	0x190C2B
R24	0x18071A
R23	0x17007C
R22	0x160001
R21	0x150401
R20	0x14E048
R19	0x1327B7
R18	0x120064
R17	0x11012C
R16	0x100080
R15	0x0F064F
R14	0x0E1E70
R13	0x0D4000
R12	0x0C5001
R11	0x0B0018
R10	0x0A10D8
R9	0x091604
R8	0x082000
R7	0x0740B2
R6	0x06C802
R5	0x0500C8
R4	0x040C43
R3	0x030642
R2	0x020500
R1	0x010808
R0	0x002598

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