T8207 Datasheet, PDF (116/158 Pages) Agere Systems – ATM Interconnect

CelXpres T8207
ATM Interconnect
Advance Data Sheet
September 2001
14 Registers (continued)
Table 91. Routing Information 2 (RI2) (0202h)
Name
mphy3_sel[5:0]
mphy0_sel[5:0]
Reserved
Bit Pos. Type Reset
Description
5:0 RW X Multi-PHY 3 Select [5:0].
The mphy3_sel[5:0] bit field selects which bit of the cell header,
the cell bus routing header, or the tandem routing header is used
as this port group address bit. These bits are ignored when the
T8207_sel bit equals ‘0.’ These bits must be programmed if the
T8207_sel bit in the main configuration 2 register equals ‘1.’
11:6 RW X Multi-PHY 0 Select [5:0].
The mphy0_sel[5:0] bit field selects which bit of the cell header,
the cell bus routing header, or the tandem routing header is used
as this port group address bit.
15:12 RO
Multi-PHY 0 and 3 Select [5:0].
The port group address bits are used to determine the queue
group to which the cell is directed. The priority select bits are used
to determine the queue in the queue group to which the cell is
directed. The mphy3_sel[5:0] bits select the most significant bit of
the port group address, and the mphy0_sel[5:0] bits select the
least significant bit of the port group address. A value of zero to 31
selects bits in the cell header where zero is the CLP bit and 31 is
the most significant bit of the GFC/VPI field. A value of 32 to 47
selects bits in the tandem routing header where 32 is the least sig-
nificant bit and 47 is the most significant bit. A value of 48 to 63
selects bits in the cell bus routing header where 48 is the least sig-
nificant bit and 63 is the most significant bit. The value, “110000,”
is a special case and may be used to force the value of this bit to
‘0.’ If this bit is forced to zero, the bit position in the resultant
pointer is always ‘0’ and is not extracted from the received cell.
0 Reserved.
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