Freescale Semiconductor MPC8250, Family Reference Manual

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PCI Bridge
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
9-30 Freescale Semiconductor
9.11.1.1 Message Unit (I
2
O) Registers
Message unit registers are described in Section 9.12, “Message Unit (I2O),” on page 9-65 .
9.11.1.2 DMA Controller Registers
DMA registers are described in Section 9.13, “DMA Controller,” on page 9-85 .
9.11.1.3 PCI Outbound Translation Address Registers (POTAR
x)
The PCI outbound translation address registers (POTARx), shown in Figure 9-17 , select the starting
addresses in PCI address space for locally generated transactions that hit within the outbound translation
windows. The new translated address is created by concatenating the transaction offset to this translation
address. Refer to
Section 9.10.2.2, “PCI Outbound Translation.”
Figure 9-17. PCI Outbound Translation Address Registers (POTAR x)
Table 9-4. describes POTARx.
0x108E0 PCI inbound comparison mask register 1 (PICMR1) R/W 0x0000_0000 9.11.1.17/9-43
0x108E8 PCI inbound translation address register 0 (PITAR0) R/W 0x0000_0000 9.11.1.15/9-42
0x108F0 PCI inbound base address register 0 (PIBAR0) R/W 0x0000_0000 9.11.1.16/9-42
0x108F8 PCI inbound comparison mask register 0 (PICMR0) R/W 0x0000_0000 9.11.1.17/9-43
0x10900 PCI CFG_ADDR R/W undefined 9.9.1.4.4/9-15
0x10904 PCI CFG_DATA R/W 0x0000_0000 9.9.1.4.4/9-15
0x10908 PCI INT_ACK R/W undefined 9.9.1.4.7/9-17
31 20 19 16
Field — TA
Reset 0000_0000_0000_0000
R/W R/W
Addr 0x10802 (POTAR0); 0x1081A (POTAR1); 0x10832 (POTAR2)
15 0
Field TA
Reset 0000_0000_0000_0000
R/W R/W
Addr 0x10800 (POTAR0); 0x10818 (POTAR1); 0x10830 (POTAR2)
Table 9-3. Internal Memory Map (continued)
Address
(offset)
Register Access Reset Section/Page