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LMH0366SQ/NOPB Datasheet(PDF) 29 Page - Texas Instruments |
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LMH0366SQ/NOPB Datasheet(HTML) 29 Page - Texas Instruments |
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29 / 41 page  LMH0366 www.ti.com SNAS585D – APRIL 2012 – REVISED APRIL 2013 Table 8. SPI Registers (continued) Addr Name Bits Field R/W Default Description (hex) (binary) 26 EOM Count Status 2 7:0 EOM_COUNT[7:0] R Eye opening monitor hits count, bits 7:0. Lower byte of the number of hits accumulated for the previous EOM phase/voltage DAC combination. In fast EOM mode (i.e. register 0x24 bit 7, FAST_EOM, is set), reading this register causes the EOM to step to the next phase/voltage DAC combination and start the next measurement. 27 Reserved 7:0 RSVD R/W 01001000 Reserved. 28 Reserved 7:0 RSVD R/W 01001000 Reserved. 29 EOM Timer Control 7:0 EOM_TIMER R/W 00000001 Eye opening monitor timer. Sets the eye opening monitor timer value in units of 256 clock cycles of the divide-by-12 VCO clock. 2A HEO Status 7:0 HEO R Horizontal eye opening. Following HEO/VEO measurement, indicates the measured horizontal eye opening. Valid values are between 1 and 63 decimal. A value of 64, accompanied by register 0x24 bit 2 (NO_HITS_ERR) set, indicates the lack of a zero crossing detection. A value of 0, accompanied by register 0x24 bit 3 (NO_OPENING_ERR) set, indicates a fully closed eye. 2B VEO Status 7:0 VEO R Vertical eye opening. Following HEO/VEO measurement, indicates the measured vertical eye opening. Valid values are between 1 and 63 decimal. A value of 64, accompanied by register 0x24 bit 4 (VEO_MAX_ERR) set, indicates the lack of detection of the upper and lower limits of the eye. 2C EOM Control 4 7:4 RSVD R/W 0000 Reserved. 3:0 EOM_MIN_HITS R/W 0000 Eye opening monitor minimum hits. Sets the minimum required number of hits at each point in the horizontal direction to detect “closed” at that point. Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 29 Product Folder Links: LMH0366 |
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