Achronix Speedster22i Interlaken - Manual (Page 38)

0x014A txstat
TX Status Register – R/W
Bit 3: Set to a value of 1 if tx_ovfout is asserted on the TX LBUS. Write
1 to clear.
Bit 2: Set to a value of 1 if an overflow occurs. This bit should never
be set and indicates a critical failure. Write 1 to clear.
Bit 1: Set to a value of 1 if a burst, less than BurstShort, not ending
with an EOP, is written into the TX. Write 1 to clear.
Bit 0: Set to a value of 1 if the serial data rate is faster than the
maximum data rate on the Local bus. Write 1 to clear.
0x0202 rxdecomm
RX Lane Decommissioning Register – R/W – Default: ‘h1717
Bits 15 indicates RX Has Bad Lane (ctl_rx_has_bad_lane)
Bits 12:8 - Rx Bad Lane
Bits 4:0 - Rx Last Lane (ctl_rx_last_lane)
0x0204 rxmframelen
RX Meta Frame Length Register – R/W
This input should be -1 the desired length. Thus for a Meta Frame of
2048, a value of 2047 should be used. This input is specified in terms
of the number of words or cycles minus one. For example, if set to
2047, then a Metaframe sync word is sent every 2048 word transfers
on every lane. See section 5.4.3 of Interlaken Protocol Definition
rev1.2.
0x0206 rxctrl
RX Burst Register – R/W – Default: ‘h0003
Bit 8 - Setting this bit to 1 changes the way the error handler report
errors. When this bit is a value of 0, it assumes packets are arriving
interwoven as segments. When this bit is a value of 1, it assumes
packets are arriving as complete packets. Use of this bit ensures that
packets delivered to the Local bus had the appropriate SOP and EOP
pairing. (ctl_rx_packet_mode)
Bits 1:0 - Specifies the maximum number of Data Words between
Burst Control Words expected by the RX. The following values are
defined: 00=64 bytes, 01=128 bytes, 10=192 bytes, 11=256 bytes.
(ctl_rx_burstmax)
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