參數(shù)資料
型號： OR3TP12
英文描述： Field-Programmable System Chip (FPSC) Embedded Master/Target PCI Interface
中文描述： 現(xiàn)場可編程系統(tǒng)芯片（促進(jìn)文化基金）嵌入式主/目標(biāo)PCI接口
文件頁數(shù)： 28/128頁
文件大小： 2450K
代理商： OR3TP12
ORCAOR3TP12 FPSC
Embedded Master/Target PCI Interface
Data Sheet
March 2000
28
L Lucent Technologies Inc.
Symbol
I/O
Description
Clock
Domain
Miscellaneous Signals
(continued)
cfgshiftenn
pci_cfg_stat
O
I
PCI Error Status Control
cfgshiftenn
is an active-low signal that MUXes the output of the PCI device
status register (PCI Specification 2.1: Section 6.2.3) onto signal
pci_cfg_stat
:
cfgshiftenn
= 1:
pci_cfg_stat
outputs the wired-OR of all status bits
below, after being masked by options in the FPSC
configuration manager.
cfgshiftenn
= 0:
pci_cfg_stat
outputs each status bit below, shifted
one at a time on successive
pciclk
rising edges.
The shift register is reset when
cfgshiftenn
= 1.
Device Status Register bits:
Detected Parity Error, Signaled System Error,
Received Master Abort, Received Target Abort,
Signaled Target Abort, Master Data Parity Error.
PCI 64-Bit Bus Indication.
This active-high signal indicates that the embed-
ded core detected that it is configured as a 64-bit agent on the PCI bus. This
is the result of detecting PCI signal
req64n
as active-low on the rising edge
of PCI signal
rstn
. Note that this does not imply that any particular transac-
tion is 64-bit, since each transaction is individually negotiated using PCI sig-
nals
req64n
and
ack64n
. When asserted, all data transfers across the
Master and Target FIFO interface will imply 64-bit data phases.
FIFO Select.
A MUX control signal that is valid in the dual-port mode to
select either Master read data (
fifo_sel
= 0) or Target address/write data
(
fifo_sel
= 1) on the
datatofpga
and
datatofpgax
bus. For quad-port mode,
this signal can be tied to high.
pciclk
pci_64bit
I
—
fifo_sel
O
—
PCI Bus Core Detailed Description
(continued)
Table 6. Embedded Core/FPGA Interface Signals
(continued)
* The source of the clock (
fclk1
or
fclk2
) for the FIFO interface (Master or Target) is selected in the FPSC configuration manager.
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