MSC8144E Reference Manual, Rev. 3
15-42
Freescale
Semiconductor
PCI
15.2.4.11 PCI Inbound Window Attribute Registers 0–2 (PIWAR[0–2])
PIWAR[0–2] defines the size of an inbound translation window and some properties of the
window. Table 15-34 shows the PIWAR[0–2] bit fields.
Table 15-33. PIEBAR[1–2] Field Descriptions
Bits
Description
—
31–20
Reserved. Write to 0 for future compatibility.
EBA
19–0
Extended Base Address
This field contains the starting address in the PCI memory space of the inbound base address in the PCI
memory space. This 20-bit field corresponds to bits 63–44 of a 64-bit address.
PIWAR0
PCI Inbound Window Attribute Registers 0–2
Offset 0x078
PIWAR1
Offset 0x060
PIWAR2
Offset 0x048
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
EN
—
PF
—
Type
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
—
IWS
Type
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 15-34. PIWAR[0–2] Field Descriptions
Bits
Description
Settings
EN
31
Enable
This bit enables the address translation window.
PCI addresses that match the definition of the window will be
recognized by the VCOP and translated to the local memory space.
0
Address translation is disabled for
this window.
1
Address translation is enabled for
this window.
—
30
Reserved. Write to 0 for future compatibility.
PF
29
Prefetchable
This bit defines whether the transactions that are translated through this
window are prefetchable on the internal MBus. Streaming the
transactions requires the memory space to be prefetchable.
0
Not prefetchable
1
Prefetchable
—
28–6
Reserved. Write to 0 for future compatibility.
IWS
5–0
Inbound Window Size
This field determines the size of the inbound translation window.
Inbound translation window size N which is the encoded 2^(N+1) bytes
window size. The smallest window is 4 Kbytes (N = 11).
000000–001010Reserved
001011 4-Kbyte window size
001100 8-Kbyte window size
...
011110 2-Gbyte window size
011111–111111Reserved
Summary of Contents for MSC8144E
Page 1: ...MSC8144E Reference Manual Quad Core Media Signal Processor MSC8144ERM Rev 3 July 2009 ...
Page 48: ...MSC8144E Reference Manual Rev 3 xlviii Freescale Semiconductor ...
Page 86: ...MSC8144E Reference Manual Rev 3 1 38 Freescale Semiconductor Overview ...
Page 168: ...MSC8144E Reference Manual Rev 3 3 60 Freescale Semiconductor External Signals ...
Page 242: ...MSC8144E Reference Manual Rev 3 5 26 Freescale Semiconductor Reset ...
Page 314: ...MSC8144E Reference Manual Rev 3 8 24 Freescale Semiconductor General Configuration Registers ...
Page 414: ...MSC8144E Reference Manual Rev 3 10 14 Freescale Semiconductor MSC8144E SC3400 DSP Subsystem ...
Page 452: ...MSC8144E Reference Manual Rev 3 11 38 Freescale Semiconductor Internal Memory Subsystem ...
Page 520: ...MSC8144E Reference Manual Rev 3 12 68 Freescale Semiconductor DDR SDRAM Memory Controller ...
Page 1070: ...MSC8144E Reference Manual Rev 3 21 28 Freescale Semiconductor Timers ...