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Programmable Logic Device:
PLD Register Summary
10006609-03
Pm8560
User’s Manual
8-3
PLD Version
This read-only register tracks PLD revisions.
Register 8-3:
PLD Version (PVR), 0x08
PVN:
PLD code Version Number
This is hard coded in the PLD and changes with every released code change. Version starts at
01
16
.
Reset:
0000_0001 (changes with CPLD version)
PLL Configuration
Write to this register to reconfigure the SYSCLK to CCB clock ratio and the CCB to CORE
clock ratio using valid values from the
MPC8560 PowerQUICC™ III Integrated Communications
Processor Reference Manual
. The changes take affect when the processor is reset (for exam-
ple; software hard reset command or the watchdog timer expires). Default values are
restored when the board is power-cycled, has a front panel reset, or receives a PCI reset that
was not the result of the MPC8560 software initiating a PCI RSTOUT command. The normal
mechanism for changing the PLL frequencies are:
1
Baseboard writes the MPC8560 PLLCR via PCI
2
Baseboard writes the MPC8560 PROE register via PCI to mask SW HRESET from causing a
PMC RSTOUT
3
Baseboard writes the MPC8560 RCR via PCI to cause a SW HRESET
4
The Pm8560 resets and the processor samples the new PLL configuration values
5
The baseboard will not reset (because the PROE prevented the PMC RSTOUT)
6
The baseboard must re-enumerate and initialize the Pm8560
Caution:
Do not attempt to over-clock the processor. This could result in unresponsive or
unpredictable Pm8560 functionality.
Register 8-4:
PLL Configuration (PLLCR), 0x0C
7
6
5
4
3
2
1
0
PVR
7
6
5
4
3
2
1
0
reserved
CCB1
CCB0
SYS3
SYS2
SYS1
SYS0
!
Summary of Contents for Pm8560
Page 8: ...Contents continued Pm8560 User s Manual 10006609 03 vi ...
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Page 14: ...Pm8560 User s Manual 10006609 03 ii blank page ...
Page 36: ...Setup Troubleshooting Pm8560 User s Manual 10006609 03 2 12 ...
Page 54: ...Serial I O Baud Rate Selection Pm8560 User s Manual 10006609 03 5 4 ...
Page 62: ...TDM Interface Rear Panel I O Connector P14 Pm8560 User s Manual 10006609 03 6 8 ...
Page 72: ...PCI Bus Interface PMC Connector Pin Assignments Pm8560 User s Manual 10006609 03 7 10 ...
Page 112: ...Development Mezzanine Card Troubleshooting Pm8560 User s Manual 10006609 03 10 12 ...
Page 138: ...Monitor Download Formats Pm8560 User s Manual 10006609 03 11 26 ...
Page 144: ...Index continued Pm8560 User s Manual 10006609 03 i 4 ...