Motorola PowerQUICC II MPC8280 Series Reference Manual page 587

Table 14-6 describes CPCR fields.
Table 14-6. CP Command Register Field Descriptions
Bit Name
0 RST Software reset command. Set by the core and cleared by the CP. When this command is executed,
RST and FLG bit are cleared within two general system clocks. The CPM reset routine is
approximately 60 clocks long, but the user can begin initialization of the CPM immediately after this
command is issued.
RST is useful when the core wants to reset the registers and parameters for all the channels
(FCCs, SCCs, SMCs, SPI, I
command does not affect the serial interface (SIx) or parallel I/O registers.
1–5 PAGE Indicates the parameter RAM page number associated with the sub-block being served. See the
SBC description for page numbers.
6–10 SBC Sub-block code. Set by the core to specify the sub-block on which the command is to operate. Set
according to OPCODE[28-31]. Refer to Table 13-7.
Sub-block
FCC1
FCC2
FCC3
SCC1
SCC2
SCC3
SCC4
SMC1
SMC2
RAND
11–14 — Reserved
15 FLG Command semaphore flag. Set by the core and cleared by the CP.
0 The CP is ready to receive a new command.
1 The CPCR contains a command that the CP is currently processing. The CP clears this bit at
the end of command execution or after reset.
16–17 — Reserved
18–25 MCN MCC channel number. Specifies the channel number in the case of an MCC command.
In FCC protocols, this field contains the protocol code as follows:
0x00 HDLC, Transparent
0x0A ATM
0x0C Ethernet
MOTOROLA Chapter 14. Communications Processor Module Overview
Freescale Semiconductor, Inc.
2
C, MCC) as well as the CP and RISC timer tables. However, this
Code
1
01110: ATM transmit
(OPCODE = 1010)
10000: all other commands
1
01110: ATM transmit
(OPCODE = 1010)
10001: all other commands
10010
00100
00101
00110
00111
01000
01001
01110
3
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Description
Page Sub-block
00100 SPI
2
00101 I C
00110 Timer
2
00000 MCC1
00001 MCC2
00010 IDMA1
00011 IDMA2
00111 IDMA3
01000 IDMA4
01010 USB
Command Set
Code Page
01010 01001
01011 01010
01111 01010
11100 00111
11101 01000
10100 00111
10101 01000
10110 01001
10111 01010
10011 01011
14-13