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DS250DF230ZLS Datasheet(PDF) 27 Page - Texas Instruments |
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DS250DF230ZLS Datasheet(HTML) 27 Page - Texas Instruments |
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27 / 119 page  Table 8-4. Eye-Opening Monitor Full Eye Capture Instructions STEP REGISTER [bits] Operation VALUE DESCRIPTION 1 0x67[5] Write 0 Disable lock EOM lock monitoring 2 0x2C[6] Write 0 Set the desired EOM vertical range 0x11[7:6] Write 2'b-- 3 0x11[5] Write 0 Power on the EOM 4 0x24[7] Write 1 Enable fast EOM 5 0x24[0] 0x25 0x26 Read 1 Begin read out of the 64 × 64 array, discard first 4 words Ch reg 0x24[0] is self-clearing. 0x25 is the MSB of the 16-bit word 0x26 is the LSB of the 16-bit word 6 0x25 Read Continue reading information until the 64 × 64 array is complete. 0x26 7 0x67[5] Write 1 Return the EOM to its original state. Undo steps 1-4 0x2C[6] Write 1 0x11[5] Write 1 0x24[7] Write 0 8.3.11 Interrupt Signals The DS250DF230 can be configured to report different events as interrupt signals. These interrupt signals do not impact the operation of the device, but merely report that the selected event has occurred. The interrupt bits in the register sets are all sticky bits. This means that when an event triggers an interrupt the status bit for that interrupt is set to logic HIGH. This interrupt status bit will remain at logic HIGH until the bit has been read. Once the bit has been read it will be automatically cleared, which allows for new interrupts to be detected. The DS250DF230 will report the occurrence of an interrupt through the INT_N pin. The INT_N pin is an open-drain output that will pull the line low when an interrupt signal is triggered. Note that all available interrupts are disabled by default. Users must activate the various interrupts before they can be used. The interrupts available in the DS250DF230 are: • CDR loss of lock • CDR locked • Signal detect loss • Signal detected • PRBS pattern checker bit error detected • HEO/VEO threshold violation When an interrupt occurs, share register 0x08 reports which channel generated the interrupt request. Users can then select one or more of the channels that generated the interrupt request and service the interrupt by reading the appropriate interrupt status bits in the corresponding channel registers. For more information on reading interrupt status, refer to the DS2x0DF810, DS250DFx10, DS250DF230 Programmer's Guide. www.ti.com DS250DF230 SNLS590C – AUGUST 2018 – REVISED JUNE 2021 Copyright © 2021 Texas Instruments Incorporated Submit Document Feedback 27 Product Folder Links: DS250DF230 |
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