Altera 50G Interlaken MegaCore Function - Manual (Page 65)

Offset Name R/W Description
9'h12 LOOPBACK RW [NUM_LANES–1:0] – For each lane, write a 1 to activate
internal TX to RX serial loopback mode, or write a 0 to
disable the loopback for normal operation.
9'h13 RESET RW Bit 9 : 1 = Force lock to data mode
Bit 8 : 1 =Force lock to reference mode
Bit 7 : 1 = Synchronously clear the TX-side error counters
and sticky flags
Bit 6 : 1 = Synchronously clear the RX-side error counters
and sticky flags
Bit 5 : 1 =Program load mode: perform a sequence of DMA
reads. Currently the IP core supports only the value of 1'b0,
indicating a processor controls the read operations.
Bit 4 : 1 = Ignore the RX analog reset
Bit 3 : 1 = Reset the soft microcontroller
Bit 2 : 1 = Reset the transmitter and the receiver
Bit 1 : 1 = Reset the receiver
Bit 0 : 1 =Ignore RX digital resets
The normal operating state for this register is all zeroes, to
allow automatic reset control. These bits are intended
primarily for hardware debugging use. Bit 2 is a good
general purpose soft reset. Bits 6 and 7 are convenient for
monitoring long stretches of error-free operation.
9'h20 ALIGN RO Bit 12 : TX lanes are aligned
Bit 0 : RX lanes are aligned.
9'h21 WORD_LOCK RO [NUM_LANES–1:0] – Word (block) boundaries have been
identified in the RX stream.
9'h22 SYNC_LOCK RO [NUM_LANES–1:0] – Metaframe synchronization has been
achieved.
9'h23 CRC0 RO 4 bit counters indicating CRC errors in lanes 7,6,5,4,3,2,1,0.
These will saturate at F, and you clear them by setting bit 6
in the RESET register.
9'h24 CRC1 RO 4 bit counters indicating CRC errors in lanes
15,14,13,12,11,10,9,8.
These will saturate at F, and you clear them by setting bit 6
in the RESET register.
UG-01140
2015.05.04
50G Interlaken IP Core Register Map 6-3
50G Interlaken IP Core Register Map Altera Corporation
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