Freescale Semiconductor MPC8260 - Manual (Page 1195)

ATM Transmission Convergence Layer
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 34-17
6. Program the Serial Interface (SI)
7. Enable TDM
Step 1
To setup and initialize FCC2, program the FPSMR and GFMR as shown in Table 14. This is for working
with one TC block operating in a single PHY environment. The transmitter and receiver should not be
enabled at this time. In this example, FCC2 does not discard idle cells.
Step 2
Because the FCC2 UTOPIA bus is connected internally to the TC UTOPIA bus, program the parallel ports
and BRGs for the active TDM(s).
Step 3
To enable receiving and transmitting, FCC2 should be programmed as shown in Table 15.
Step 4
To define the connection of FCC2, the CPM MUX should be programmed as shown in Table 16.
Table 34-9. Programming the CPM MUX for a TI Application
Step 5
The TCx layer block should be configured using the TCMODEx and CDSMR1 registers as shown in
Table 17. Note that the TC layer must be enabled after both FCC2 and CPM MUX have been programmed.
Table 34-7. Programming GFMR and FPSMR to Setup the FCC2
Init Values Description
FPSMR2 = 0x0080_0000 UTOPIA Rx and Tx in Master Mode, Idle cells are not discarded
GFMR2 = 0x0000_000A ATM Protocol Mode, Receiver and Transmitter are disabled
Table 34-8. Enable FCC2
Init Values Description
GFMR2 = 0x0000_003A Enable Rx and Tx
Init Values Description
CMXFCR = 0x0080_0000 FCC2 is connected to the TC Layer
CMXUAR = 0x0000 FCC2 as UTOPIA master
Table 34-10. Programming the TC Layer Block
Init Values Description
TCMODE1 = 0xC202 Enable TC Layer Rx and Tx, no error correction on header, the TC is the only PHY on
UTOPIA
CDSMR1 = 0x3980 ALPHA = 7, DELTA = 6 (default values)