MPC8280 datasheet(923/1386 Pages) FREESCALE

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Multi-Channel Controllers (MCCs)

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

Freescale Semiconductor

29-33

Table 29-16 describes group assignments.

NOTE

The TDM group channel assignments made in MCCF must be coherent with

the SI register programming and SI RAM programming; see Section 15.5,

“Serial Interface Registers,” and Section 15.4.3, “Programming SIx RAM

Entries.” The user must also program MCCF before enabling the TDM

channel in the SIGMR; see Section 15.5.1, “SI Global Mode Registers

(SIxGMR).”

29.7

MCC Commands

The user starts channels by writing to the TSTATE/RSTATE registers as described in Section 29.3.1.4,

“Internal Receiver State (RSTATE)—HDLC Mode,” and Section 29.3.1.1, “Internal Transmitter State

(TSTATE)—HDLC Mode.”

The following commands, used to stop and initialize channels, are issued to the MCC by writing to CPCR

as described in Section 14.4.1, “CP Command Register (CPCR).” All MCC channels must be initialized

using one of the following commands before being used in an active TDM. Not all commands are available

in all revisions of silicon and the user should refer to Section 14.4.1.1, “CP Commands,” for further details.

Table 29-16. Group Channel Assignments

Group

Channels

Group1 in MCCF11

1 Not on the MPC8270 nor the MPC8275.

0–31

Group2 in MCCF11

32–63

Group3 in MCCF11

64–95

Group4 in MCCF11

96–127

Group1 in MCCF2

128–159

Group2 in MCCF2

160–191

Group3 in MCCF2

192–223

Group4 in MCCF2

224–255

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