CYV15G0404DXB Datasheet, PDF (24/43 Pages) Cypress Semiconductor – Independent Clock Quad HOTLink II™ Transceiver with Reclocker

PRELIMINARY
CYV15G0404DXB
Table 11. Receive Character Status Bits
RX-
STx[2:0]
000
001
010
011
100
101
110
111
Description
Priority
Normal Status
Receive BIST Status
(Receive BIST = Enabled)
7 Normal character received. The valid Data BIST Data Compare. Character compared correctly.
character on the output bus meets all the
formatting requirements of Data characters
listed in Table 15.
7 Special code detected. The valid special BIST Command Compare. Character compared
character on the output bus meets all the correctly.
formatting requirements of Special Code
characters listed in Table 16, but is not the
presently selected framing character or a
decoder violation indication.
2 Receive Elasticity buffer underrun/overrun BIST Last Good. Last Character of BIST sequence
error. The receive buffer was not able to detected and valid.
add/drop a K28.5 or framing character
5 Framing character detected. This indicates
that a character matching the patterns
identified as a framing character (as selected
by FRAMCHARx) was detected. The decoded
value of this character is present in the
associated output bus.
4 Codeword violation. The character on the BIST Last Bad. Last Character of BIST sequence
output bus is a C0.7. This indicates that the detected invalid.
received character cannot be decoded into any
valid character.
1 Loss of sync. This indicates a PLL Out of Lock BIST Start. Receive BIST is enabled on this channel,
condition
but character compares have not yet commenced.
This also indicates a PLL Out of Lock condition, and
Elasticity Buffer overflow/underflow conditions.
6 Running disparity error. The character on the BIST Error. While comparing characters, a mismatch
output bus is a C4.7, C1.7, or C2.7.
was found in one or more of the decoded character
bits.
3 Reserved
BIST Wait. The receiver is comparing characters. but
has not yet found the start of BIST character to enable
the LFSR.
Document #: 38-02097 Rev. **
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