參數(shù)資料
型號: 930400802
廠商: ATMEL CORP
元件分類: FPGA
英文描述: FPGA, 2304 CLBS, 40000 GATES, PQFP256
封裝: MQFPF-256
文件頁數(shù): 40/43頁
文件大?。?/td> 673K
代理商: 930400802
6
AT40KEL040
4155H–AERO–02/06
The Busing Network
Figure 3 on page 7 depicts one of five identical busing planes. Each plane has three bus
resources: a local-bus resource (the middle bus) and two express-bus (both sides)
resources. Bus resources are connected via repeaters. Each repeater has connections
to two adjacent local-bus segments and two express-bus segments. Each local-bus
segment spans four cells and connects to consecutive repeaters. Each express-bus
segment spans eight cells and “l(fā)eapfrogs” or bypasses a repeater. Repeaters regener-
ate signals and can connect any bus to any other bus (all pathways are legal) on the
same plane. Although not shown, a local bus can bypass a repeater via a programma-
ble pass gate allowing long on-chip tri-state buses to be created. Local/Local turns are
implemented through pass gates in the cell-bus interface (see following page).
Express/Express turns are implemented through separate pass gates distributed
throughout the array.
Some of the bus resource on the AT40KEL040 is used as a dual-function resource.
Table 2 shows which buses are used in a dual-function mode and which bus plane is
used. The AT40KEL040 software tools are designed to accommodate dual-function
buses in an efficient manner.
Table 2. Dual-function Buses
Function
Type
Plane(s)
Direction
Comments
Cell Output Enable
Local
5
Horizontal and
Vertical
RAM Output Enable
Express
2
Vertical
Bus full length at array edge
Bus in first column to left of RAM block
RAM Write Enable
Express
1
Vertical
Bus full length at array edge
Bus in first column to left of RAM block
RAM Address
Express
1 - 5
Vertical
Buses full length at array edge
Buses in second column to left of RAM block
RAM Data In
Local
1
Horizontal
RAM Data Out
Local
2
Horizontal
Clocking
Express
4
Vertical
Bus half length at array edge
Set/Reset
Express
5
Vertical
Bus half length at array edge
相關(guān)PDF資料
PDF描述
9305DMQB 93 SERIES, ASYN POSITIVE EDGE TRIGGERED 4-BIT BINARY COUNTER, CDIP14
9308DMQB 93 SERIES, DUAL LOW LEVEL TRIGGERED D LATCH, TRUE OUTPUT, CDIP24
9308FMQB 93 SERIES, DUAL LOW LEVEL TRIGGERED D LATCH, TRUE OUTPUT, CDFP24
9309-00 PRESCALER, UUC
9309-01 PRESCALER, CDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
9304-01 制造商:PEREGRINE 制造商全稱:PEREGRINE 功能描述:1- 7 GHz Low Power CMOS Divide-by-2 Prescaler
93-0404-R 制造商:International Rectifier 功能描述:1063-2276-001 - Bulk
930404X 功能描述:LAMP HOLDER 制造商:visual communications company - vcc 系列:* 零件狀態(tài):有效 標(biāo)準(zhǔn)包裝:250
930404X710RN 制造商:Lighting Components & Design Inc 功能描述:Lampholder; Bayonet; 3 W; Brass (Housing); 6 in. Length, 22 AWG; Solder Lug
930404X724AN 功能描述:PMI ROUND .660" INC 250V TAB AMB 制造商:visual communications company - vcc 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:100