RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
Table 4 CFG_ADDR and PHY_ADDR Bit Usage in SNK direction
Polling Selection
PHY_ADDR Pins CFG_ADDR PHY_ADDR Pins
MODE
CFG_ADDR
[4:0]=device
[4:0]=device
[4:0]=device
[4:0]=device
UTOPIA-2
Single-Addr
[2]=device
[1:0]=”00”
[2]=device
[2]=device
[1:0]=”00”
[15:2]=device
[15:2]=device
Any-PHY
with CSB
addr is
prepended
[3:2]=device
[1:0]=”00”
[3:2]=device
[3:2]=device
[1:0]=”00”
Any-PHY
without
CSB
addr is
prepended
Notes:
• In Any-PHY mode, if CS_MODE_EN=’1’ then CFG_ADDR[4:3] = “00”. Else if
CS_MODE_EN=’0’ then CFG_ADDR[4]=”0”.
• In Any-PHY mode the upper 14 bits of the prepended address are compared
with CFG_ADDR[15:2]. The bottom two bits are not compared with this field.
Polling should be done with PHY_ADDR= “00”. If in 8-bit mode
CFG_ADDR[7:2] is used instead.
9.1.3 UTOPIA Mux Block (UMUX)
The UMUX serves as the bridge between the A1SP block and the SNK_INTF
and SRC_INTF blocks.
In the source direction, the UMUX polls the A1SP block and the Loopback FIFO
using a least recently serviced algorithm to determine cell availability. In this
algorithm, once a particular source is serviced, it is put at the lowest priority of
the two sources.
If the SRC_INTF FIFO has room for a cell, the UMUX polls the A1SP block or
Loopback FIFO to determine if it has a cell. If so, a cell is read from the selected
A1SP block or Loopback FIFO and transferred into the SRC_INTF FIFO. If the
highest priority source does not have a cell, the other source is examined. The
A1SP block has an 8-cell FIFO. The Loopback FIFO is 3 cells.
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