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MPC8280 bảng dữ liệu(PDF) 386 Page - Freescale Semiconductor, Inc

tên linh kiện MPC8280
Giải thích chi tiết về linh kiện  PowerQUICC??II Family Reference Manual
PDF  1386 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
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MPC8280 bảng dữ liệu(HTML) 386 Page - Freescale Semiconductor, Inc

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PCI Bridge
MPC8280 PowerQUICC II Family Reference Manual, Rev. 1
9-78
Freescale Semiconductor
Figure 9-72. Outbound Post_FIFO Tail Pointer Register (OPTPR)
9.12.3.4
I2O Registers
The following sections discuss I2O registers.
9.12.3.4.1
Inbound FIFO Queue Port Register (IFQPR)
IFQPR is used by PCI masters to access inbound messages in local memory. Local processor does not have
access to this port. IFQPR should be accessed only from the PCI bus. IFQPR is described in Figure 9-73
and Table 9-58.
31
20
19
16
Field
QBA
OPTP
Reset
0000_0000_0000_0000
R/W
R
R/W
Addr
0x104DA
15
21
0
Field
OPTP
—
Reset
0000_0000_0000_0000
R/W
R/W
R
Addr
0x104D8
Table 9-57. OPTPR Field Descriptions
Bits
Name
Description
31–20
QBA
Queue base address. When read returns the contents of QBAR bits 31-20.
19–2
OPTP
Outbound post_FIFO tail pointer. Local memory offset of the tail pointer of the outbound post
list FIFO.
1–0
—
Reserved, should be cleared.



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