Datasheet

LMH0041, LMH0051
LMH0071, LMH0341
SNLS272Q –APRIL 2007–REVISED APRIL 2013 www.ti.com
Table 2. DES Register Detail Table (continued)
ADD 'h Name Bits Field R/W Default Description
2D Error Monitor Controls Error Monitoring functions
7:5 Reserved
4 Accumulate r/w 0 Enable counting accumulation of errors
Error Count
3 8b10b error r/w 0 When set, disables 8b10b errors from being counted, or
disable from affecting the status of the LOCKpin
2 clear event r/w 0 When set, clears the number of errors in both the current
count and previous state of the error count
1 select error r/w 0 Select which error count to display
count 0: Number of errors in current run
1: Number of errors within the selected timing window
0 Normal Error r/w 0 Disable exiting NORMAL state when the number of errors
Disable exceeds the error threshold
2E Error Threshold Sets the error threshold LSBs
7:0 Error Threshold r/w 0x10h Error threshold above which the device stops receiving
data and transferring it to the RXOUT pins.
2F Error Threshold Sets the error threshold MSBs
Error Threshold r/w 00 Error threshold above which the device stops receiving
data and transferring it to the RXOUT pins.
30–3A Reserved
3B Data Rate This Register provides information about the rate at which the receive PLL is locked
7 Reserved
6:4 Freq Range r 111 001: 270 Mbps
011: 1.485 Gbps
110: 2.97 Gbps
111: Unlocked
3:0 Reserved
3C CDR Lock Status 7:4 Reserved
3 CDR Lock r 1: CDR Locked0: CDR Unlocked
2 Signal Detect r 1: signal present
Ch 1
1 Signal Detect r 1: signal present
Ch 0
0 Reserved
3D Event Status Error Counting register
7:0 event count r/w 0 count of errors that caused a loss of the link
3E Error Status 1 Error Count LSB
7:0 Data Error r/w 0 Number of errors in the data — LSB
Count 1
3F Error Status 2 Error Counting Register MSB
7:0 Data Error r/w 0 Number of errors in the data — MSB
Count 2
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Product Folder Links: LMH0041 LMH0051 LMH0071 LMH0341