參數(shù)資料
型號(hào): LR4500
廠商: LSI Corporation
英文描述: Superscalar Microprocessor(超標(biāo)量微處理器)
中文描述: 超標(biāo)量微處理器(超標(biāo)量微處理器)
文件頁數(shù): 72/172頁
文件大小: 1142K
代理商: LR4500
5-2
Bus Interface Descriptions
Figure 5.1 LR4500 Interfaces
5.1 External Interfaces
This section describes the LR4500 external interfaces: Mbus, Lbus, PLL,
test, and core monitor.
Each signal definition contains the mnemonic and the full signal name.
Active LOW signals have an ‘n’ suffix, for example, SCRESETn. Active
HIGH signals have a ‘p’ suffix, for example, MDQMp. ‘Assert’ means to
drive the signal TRUE or active. ‘Deassert’ means to drive the signal
FALSE or inactive.
5.1.1 Mbus Interface
Figure 5.2
shows the 89 Mbus signals that the LR4500 uses to connect
the LR4500 DRAM Controller to the synchronous DRAMs in the main
memory array. Inputs and outputs are referenced to the LR4500
reference device and more specifically to the DRAM Controller.
LR4500
Lbus
Devices
DRAM Controller
CW4011
Shell
Reference
Device
Lbus
Mbus
SCbus
Synchronous
DRAM
SCbus/Lbus
Converter
Described in
Mbus Interface
Described in
SCbus Interface
Described in
Lbus Interface
PLL Cell
System
Clock
Microprocessor
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參數(shù)描述
LR4-550 功能描述:可復(fù)位保險(xiǎn)絲 5.5A 20V 100A Imax RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C
LR4-550F 功能描述:可復(fù)位保險(xiǎn)絲 5.5A 20V 100A Imax RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C
LR4-550R 功能描述:可復(fù)位保險(xiǎn)絲 RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C
LR4-550R-2 功能描述:可復(fù)位保險(xiǎn)絲 LR4-550R-2 RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C
LR4-550RAF 功能描述:可復(fù)位保險(xiǎn)絲 5.5A STRAP Polyswitch PTC RESET RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C