T8207-BAL-DT Agere Systems, Inc., T8207-BAL-DT Datasheet - Page 111

• Manufacturer Part Number: T8207-BAL-DT
• Description: CelXpres ATM interconnect. Dry-bagget, tape & reel .
• Manufacturer: Agere Systems, Inc.

Advance Data Sheet
September 2001
Agere Systems Inc.
14 Registers
Table 86. TX PHY FIFO Routing 3 (TXPFR3) (0178h)
port_rte[63:48]
Name
Bit Pos.
(continued)
15:0
Type
RW
Reset
0
Port Route [63:48]. These port routing bits are only used when
32 PHY ports are used. Each bit in this field represents one of
16 queues from the 64 queues in the device, where the least sig-
nificant bit is queue 48, and the most significant bit is queue 63.
These 64 queues are divided into sixteen groups of four queues
each. The four queues of each group are divided between two
PHY ports, as follows:
Group 0—queues 0 to 3—ports 0 and 1
Group 1—queues 4 to 7—ports 2 and 3
Group 2—queues 8 to 11—ports 4 and 5
Group 3—queues 12 to 15—ports 6 and 7
Group 4—queues 16 to 19—ports 8 and 9
Group 5—queues 20 to 23—ports 10 and 11
Group 6—queues 24 to 27—ports 12 and 13
Group 7—queues 28 to 31—ports 14 and 15
Group 8—queues 32 to 35—ports 16 and 17
Group 9—queues 36 to 39—ports 18 and 19
Group 10—queues 40 to 43—ports 20 and 21
Group 11—queues 44 to 47—ports 22 and 23
Group 12—queues 48 to 51—ports 24 and 25
Group 13—queues 52 to 55—ports 26 and 27
Group 14—queues 56 to 59—ports 28 and 29
Group 15—queues 60 to 63—ports 30 and 31
The bits in this field assign each queue in the group to either the
odd- or even-numbered PHY port in the group. If a bit is cleared to
‘0,’ the corresponding queue is assigned to the even-numbered
port. If the bit is set to ‘1,’ the corresponding queue is assigned to
the odd-numbered port. For 32 PHY ports, if the device is config-
ured in normal 32-port mode, as described in Section 9.2.2, Out-
going ATM Mode (Cells Sent by T8207), and in Section 11.4,
Queuing, this register is programmed to “1010101010101010.”
With this setting, PHY port 24 is assigned queues 48 and 50, PHY
port 25 is assigned queues 49 and 51, PHY port 26 is assigned
queues 52 and 54, PHY port 27 is assigned queues 53 and 55,
and so on.
Description
ATM Interconnect
CelXpres T8207
111