Artesyn BajaPPC-750, Руководство пользователя

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PCI Bridge Configuration Registers 5-3
0002M621-15
When installing a PMC module, follow these guidelines:
1. Before adding modules to the BajaPPC-750, be sure that the combined power
requirements of the BajaPPC-750 and the PMC modules do not exceed the
system’s power supply rating. Without a PMC module, the BajaPPC-750 base-
board requires a maximum of about 30 W. With two PMC modules, the
requirement is approximately 45 W maxiumum.
2. To prevent ESD damage to the BajaPPC-750 and the PMC modules, wear a
grounding wriststrap and use a grounded work surface while handling the
boards.
3. If the BajaPPC-750 is installed in a system, turn off power to the BajaPPC-750
before removing it from the system.
4. Set up the PMC module and install it on the BajaPPC-750 as specified in the
module’s hardware manual.
CAUTION. To avoid the risk of damaging boards, do not install or remove
boards from a rack while power is applied.
To check if a PMC module is installed, read the L2 Cache/PMC Bus Mode Register
(Register Map 3-6) at FF98,0030
16
. A value of one in Bit 0 indicates that PMC site
J1x is occupied, and a one in Bit 1 indicates that site J2x is occupied.
5.3 PCI Bridge Configuration Registers
The Motorola MPC106 is the PCI bridge for the BajaPPC-750. It interfaces directly
with the CPU and supports synchronous DRAM. Table 5-1 summarizes the
MPC106 configuration registers associated with the PCI interface. For complete
details on these registers and bit definitions, please refer to the
MPC106 PCI
Bridge/Memory Controller User’s Manual .
Table 5-1. MPC106 PCI Interface Configuration Registers
MPC106
Hex Offset Size in
Bytes Access
Mode
Register Name
Hex
Default
00 2 R Vendor ID (Motorola) 1057
02 2 R Device ID (MPC106) 0002
04 2 R/W PCI Command Register. Allow access to
both memory and I/O space. Allow the
MPC106 to act as PCI bus master. 0006
06 2 R/Bit-reset PCI Status Register 0080
08 1 R Revision ID nn
09 1 R Standard Programming Interface 00
0A 1 R Subclass Code 00
0B 1 R Class Code 06