Freescale Semiconductor MPC8260 - Manual (Page 1307)

Reference Manual (Rev 1) Errata
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor B-5
#24 as shown). IDMA option 3 is shown correctly as the last request in
prioritization of CPM peripherals. The table should appear as follows:
14.3.7, 14-10 In Table 14-3, the description for RCCR[ERAM] pertaining to HiP4 devices
(ERAM = 16–19), the starting offset for all of the additional 8 Kbytes of dual-port
RAM should be 0x4000 (not 0x0000). Also, it should read “RAM microcode
execution...”. The description should appear as follows (changes in boldface):
14.3.10, 14-12 Replace the current paragraph with the following.
Associated with each version of CPM microcode is a number (REV_NUM) that
uniquely identifies that specific microcode. This number is hard-coded into the
microcode which is stored in the CPM’s internal ROM. At power-up, the
communication processor (CP) reads this number and proceeds to store it into the
miscellaneous parameter RAM portion of the CPM's internal dual-port RAM
(DPR). The user can then access this location in DPR to determine which version
of CPM microcode is contained in that device. Table 14-5 describes which
microcode version numbers are associated with each silicon revision.
Priority Request
1-3 Unchanged
4 IDMA[1–4] emulation (default—option 1)
1
1
The priority of each IDMA channel is programmed independently. See the
RCCR[DR x QP] description in Section 14.3.7, “RISC Controller Configuration Register
(RCCR).”
5 Emergency (from FCCs, MCCs, and SCCs)
6 IDMA[1–4] emulation (option 2)
1
7-33 Same relative priority
34 IDMA[1–4] emulation (option 3)
1
ERAM .25- µm (HiP4) devices: ERAM[16-19]. Enable RAM microcode. Configure as instructed in the
download process of a Freescale-supplied RAM microcode package.
0000 Disable microcode program execution from the dual-port RAM. (That is, microcode
execution starts at ROM address 0x0000 after reset.)
In the following configurations, RAM microcode execution starts at address 0x0000 after reset:
0010 Microcode uses the first 2 Kbytes of the dual-port RAM + 8 Kbytes starting from 0x4000.
0100 Microcode uses the first 4 Kbytes of the dual-port RAM + 8 Kbytes starting from 0x4000.
0110 Microcode uses the first 6 Kbytes of the dual-port RAM + 8 Kbytes starting from 0x4000.
1000 Microcode uses the first 8 Kbytes of the dual-port RAM + 8 Kbytes starting from 0x4000.
1010 Microcode uses the first 10 Kbytes of the dual-port RAM + 8 Kbytes starting from 0x4000.
1100 Microcode uses the first 12 Kbytes of the dual-port RAM + 8 Kbytes starting from 0x4000.
In the following configurations, microcode execution starts at RAM address 0x4000 after reset:
0011 Microcode uses 2 Kbytes starting from dual-port RAM address 0x4000.
0101 Microcode uses 4 Kbytes starting from dual-port RAM address 0x4000.
0111 Microcode uses 6 Kbytes starting from dual-port RAM address 0x4000.
1001 Microcode uses 8 Kbytes starting from dual-port RAM address 0x4000.
Note: All other configurations not listed are reserved.