Information

Enhanced Three-Speed Ethernet Controllers
MPC8308 PowerQUICC II Pro Processor Reference Manual, Rev. 1
Freescale Semiconductor 16-53
16.5.3.3.6 Receive Queue Filer Table Address Register (RQFAR)
RQFAR, shown in Figure 16-27, contains the index of the current, indirectly accessible entry of the
received queue filer table. Each table entry occupies a pair of 32-bit words, denoted RQCTRL and
RQPROP. To access the RQCTRL and RQPROP words of entry n, write n to RQFAR. Then read or write
the indexed RQCTRL and RQPROP words by reading or writing the RQFCR and RQFPR registers,
respectively.
8–9 B1CTL Location of byte 1 of property ARB.
00 Byte 1 is not extracted, and appears as zero in property ARB.
01 Byte 1 is located in the received frame at offset (B1OFFSET – 8) bytes from the first byte of the
Ethernet DA. In non-FIFO modes, a negative effective offset points to bytes of the standard Ethernet
preamble. Values of B1OFFSET less than 8 are reserved in FIFO modes.
10 Byte 0 is located in the received frame at offset B1OFFSET bytes from the byte after the last byte of
the layer 2 header.
11 Byte 0 is located in the received frame at offset B1OFFSET bytes from the byte after the last byte of
the layer 3 header.
10–15 B1OFFSET Offset relative to the header defined by B1CTL that locates byte 1 of property ARB. An effective offset
of zero points to the first byte of the specified header.
16–17 B2CTL Location of byte 2 of property ARB.
00 Byte 2 is not extracted, and appears as zero in property ARB.
01 Byte 2 is located in the received frame at offset (B2OFFSET – 8) bytes from the first byte of the
Ethernet DA. In non-FIFO modes, a negative effective offset points to bytes of the standard Ethernet
preamble. Values of B2OFFSET less than 8 are reserved in FIFO modes.
10 Byte 0 is located in the received frame at offset B2OFFSET bytes from the byte after the last byte of
the layer 2 header.
11 Byte 0 is located in the received frame at offset B2OFFSET bytes from the byte after the last byte of
the layer 3 header.
18–23 B2OFFSET Offset relative to the header defined by B2CTL that locates byte 2 of property ARB. An effective offset
of zero points to the first byte of the specified header.
24–25 B3CTL Location of byte 3 of property ARB.
00 Byte 3 is not extracted, and appears as zero in property ARB.
01 Byte 3 is located in the received frame at offset (B3OFFSET – 8) bytes from the first byte of the
Ethernet DA. In non-FIFO modes, a negative effective offset points to bytes of the standard Ethernet
preamble. Values of B3OFFSET less than 8 are reserved in FIFO modes.
10 Byte 0 is located in the received frame at offset B3OFFSET bytes from the byte after the last byte of
the layer 2 header.
11 Byte 0 is located in the received frame at offset B3OFFSET bytes from the byte after the last byte of
the layer 3 header.
26–31 B3OFFSET Offset relative to the header defined by B3CTL that locates byte 3 of property ARB. An effective offset
of zero points to the first byte of the specified header.
Table 16-31. RBIFX Field Descriptions (continued)
Bits Name Description