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| 型號： | OR2C26A3BC432I-DB |
| 廠商： | LATTICE SEMICONDUCTOR CORP |
| 元件分類： | FPGA |
| 英文描述： | FPGA, 576 CLBS, 27600 GATES, PBGA432 |
| 封裝： | EBGA-432 |
| 文件頁數(shù)： | 101/196頁 |
| 文件大?。?/td> | 3475K |
| 代理商： | OR2C26A3BC432I-DB |
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Lattice Semiconductor
19
Data Sheet
January 2003
ORCA Series 2 FPGAs
Programmable Logic Cells (continued)
PLC Routing Resources
Generally, the ORCA Foundry Development System is
used to automatically route interconnections. Interac-
tive routing with the ORCA Foundry design editor
(EPIC) is also available for design optimization. To use
EPIC for interactive layout, an understanding of the
routing resources is needed and is provided in this sec-
tion.
The routing resources consist of switching circuitry and
metal interconnect segments. Generally, the metal
lines which carry the signals are designated as routing
nodes (lines). The switching circuitry connects the rout-
ing nodes, providing one or more of three basic func-
tions: signal switching, amplication, and isolation. A
net running from a PFU or PIC output (source) to a
PLC or PIC input (destination) consists of one or more
lines, connected by switching circuitry designated as
congurable interconnect points (CIPs).
The following sections discuss PLC, PIC, and interquad
routing resources. This section discusses the PLC
switching circuitry, intra-PLC routing, inter-PLC routing,
and clock distribution.
Congurable Interconnect Points
The process of connecting lines uses three basic types
of switching circuits: two types of congurable intercon-
nect points (CIPs) and bidirectional buffers (BIDIs). The
basic element in CIPs is one or more pass transistors,
each controlled by a conguration RAM bit. The two
types of CIPs are the mutually exclusive (or multi-
plexed) CIP and the independent CIP.
A mutually exclusive set of CIPs contains two or more
CIPs, only one of which can be on at a time. An inde-
pendent CIP has no such restrictions and can be on
independent of the state of other CIPs. Figure 19
shows an example of both types of CIPs.
f.13(F)
Figure 19. Congurable Interconnect Point
3-Statable Bidirectional Buffers
Bidirectional buffers provide isolation as well as ampli-
cation for signals routed a long distance. Bidirectional
buffers are also used to drive signals directly onto
either vertical or horizontal XL and XH lines (to be
described later in the inter-PLC routing section). BIDIs
are also used to indirectly route signals through the
switching lines. Any number from zero to eight BIDIs
can be used in a given PLC.
The BIDIs in a PLC are divided into two nibble-wide
sets of four (BIDI and BIDIH). Each of these sets has a
separate BIDI controller that can have an application
net connected to its TRI input, which is used to 3-state
enable the BIDIs. Although only one application net
can be connected to both BIDI controllers, the sense of
this signal (active-high, active-low, or ignored) can be
congured independently. Therefore, one set can be
used for driving signals, the other set can be used to
create 3-state buses, both sets can be used for 3-state
buses, and so forth.
2
INDEPENDENT CIP
CD
A
B
AB
=
MULTIPLEXED CIP
A
B
C
A
B
C
O
CD
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| OR2C26A3PS208I-DB | 功能描述:FPGA - 現(xiàn)場可編程門陣列 2304 LUT 342 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-256 |
| OR2C26A3PS208-N-DB | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Lattice Semiconductor Corporation 功能描述: |
| OR2C26A3PS240I-DB | 功能描述:FPGA - 現(xiàn)場可編程門陣列 2304 LUT 342 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-256 |
| OR2C26A3PS304I-DB | 功能描述:FPGA - 現(xiàn)場可編程門陣列 Use ECP/EC or XP RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-256 |
| OR2C26A-4BA352 | 制造商:ORCA 功能描述: |
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