DS537 Datasheet, PDF (84/148 Pages) Xilinx, Inc – LogiCORE IP XPS LL TEMAC

LogiCORE IP XPS LL TEMAC (v2.03a)
Table 58: Transmit Statistics Bit Definitions
ClientTxStats
Name
2
MULTICAST_FRAME
1
BROADCAST_FRAME
0
SUCCESSFUL_FRAME
Description
Asserted if the previous frame contains a multicast address
in the destination address field.
Asserted if the previous frame contains a broadcast address
in the destination address field.
Asserted if the previous frame is transmitted without error.
X-Ref Target - Figure 52
TxClientClk
TX data interface to PHY
TX valid signal to PHY
Ethernet Frame to PHY
ClientTxStatsByte Vld
ClientTxStatsVld
ClientTxStats
01
31
DS537_52_091909
Figure 52: Transmit Statistics Waveforms
Receive Statistics Vector
The receiver provides 27 bits of statistics for each frame transmitted as well as a signal which can be used to count
the total number of bytes transmitted. The 32-bit value is driven out one bit at a time following the transmission of
each frame (shown in Figure 53).
Table 59 shows the bit definition of the receive statistics. Bits 28 to 20 will always be driven to zero because
half-duplex is not supported.
Logic can be used to de-multiplex the receive statistics.
Table 59: Receive Statistics Bit Definitions
ClientTxStats
Name
Description
ALIGNMENT_ERROR
26
Used in 10/100 MII mode. Asserted if the previous frame received has an
incorrect FCS value and a misalignment occurs when the 4-bit MII data
bus is converted to the 8-bit GMII data bus.
Length/Type Out Of Range
Asserted if the Length/Type field contains a length that does not match the
number of data byte received. Also asserted if the Length/Type field
25
indicates that the frame contains padding but the number of data bytes
received is not equal to 64 bytes (minimum frame size).
The exception is when the Length/Type field error checks are disabled.
BAD_OPCODE
24
Asserted if the previous frame is error free, contains the special control
frame identifier in the Length/Type field, but contains an OPCODE
unsupported by the XPS_LL_TEMAC (any OPCODE other then Pause).
FLOW_CONTROL_FRAME
Asserted if the previous frame is error free. Contains the special control
frame identifier in the Length/Type field. Contains a destination address
23
matching either the pause control address or the unicast address.
Contains the supported PAIUSE OPCODE and is acted upon by the
XPS_LL_TEMAC.
22
Reserved (driven to zero)
Returns 0.
www.xilinx.com
84