Freescale Semiconductor MPC8260 - Manual (Page 613)

CPM Multiplexing
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 16-3
• Each SCC can have its own set of modem control pins.
• Each SMC can have its own set of four pins.
• Each FCC, SCC, and SMC can be driven from a bank of twenty clock pins or a bank of eight BRGs.
The multiple-PHY addressing selection supports the following options for FCC1 and FCC2:
• In master mode:
— FCC1 connect up to 31 PHYs and FCC2 connect up to 7 PHYs.
— FCC1 connect up to 15 PHYs and FCC2 connect up to 15 PHYs.
— FCC1 connect up to 7 PHYs and FCC2 connect up to 31 PHYs.
• In slave mode:
— FCC1 connect up to 31 PHYs and FCC2 connect to 0 PHYs.
— FCC1 connect up to 15 PHYs and FCC2 connect up to 1 PHYs.
— FCC1 connect up to 7 PHYs and FCC2 connect up to 3 PHYs.
— FCC1 connect up to 3 PHYs and FCC2 connect up to 7 PHYs.
— FCC1 connect up to 1 PHYs and FCC2 connect up to 15 PHYs.
— FCC1 connect to 0 PHYs and FCC2 connect up to 31 PHYs.
16.2 Enabling Connections to TSA or NMSI
Each serial device can be independently enabled to connect to the TSA or to dedicated external pins, as
shown in
Figure 16-2 . Each FCC can be connected to a dedicated MII or to the eight TDMs. FCC1 can
also be connected to an 8- or 16-bit UTOPIA level-2 interface. FCC2 can also be connected to an 8-bit
UTOPIA level-2 interface. Each SCC or SMC can be connected to the eight TDMs or to its own set of
pins. Once connections are made to the TSA, the exact routing decisions are made in the SIx RAMs.