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| 型號(hào)： | SPAK302PV16VC |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP144 |
| 封裝： | 20 X 20 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, PLASITC, LQFP-144 |
| 文件頁(yè)數(shù)： | 105/128頁(yè) |
| 文件大?。?/td> | 641K |
| 代理商： | SPAK302PV16VC |
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Signal Descriptions
5-11
MC68EN302 REFERENCE MANUAL
MOTOROLA
5.6.5 Address Mux (AMUX)
The AMUX pin is provided for implementing external address muxing circuitry so that
external masters may access DRAM modules controlled by the MC68EN302 DRAM
controller. External address muxing must take place in this situation since an access to the
MC68EN302 as a slave always results in the addresses driven as an input, and does not
output addresses to the DRAM module.
Another use for the AMUX pin would be implementations in which a linear DRAM space is
required.
5.6.6 Parity (PARITY1–PARITY0)
These two pins are provided to support parity checking of DRAM. If enabled, parity is
generated on writes and checked on reads. A parity error on a read generates a bus error.
PARITY0 is used in connection with D15-D8 and PARITY1 is used in connection with D7–
D0.
Parity checking/generation is not supported for external bus masters.
5.6.7 Muxing Scheme
To provide a simplified implementation of the Address Mux, a unique muxing scheme is
provided. Rather than providing programmability to change which addresses are muxed on
a particular signal, a generic muxing scheme is provided so that one muxing scheme may
be utilized by all supported DRAM bank sizes. Table 5-3 shows the DRAM muxing scheme.
The usage listed in the table is for typical operation. It is possible that some users may utilize
the Base Address Registers and the Mask bits in a non-standard way.
Table 5-3. Address Muxing Scheme
PROCESSOR
ADDRESS
ROW ADDRESS
COLUMN
ADDRESS
USAGE
A9
9
1
Used for all Bank Sizes
A10
10
2
A11
11
3
A12
12
4
A13
13
5
A14
14
6
A15
15
7
A16
16
8
A18
18
17
Used for 512K and up
A20
20
19
Used for 2M and up
A22
22
21
Used for 8M
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SPAK302FC25C | 4 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP132 |
| MC68EN360EM25 | 7 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP240 |
| MC68EN360FE33 | RISC MICROCONTROLLER, CQFP240 |
| MC68360RC25 | RISC MICROCONTROLLER, CPGA241 |
| MC68EN360RC25 | RISC MICROCONTROLLER, CPGA241 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SPAK56854FG120 | 制造商:Freescale Semiconductor 功能描述: |
| SPAK56857BU120 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:120 MIPS Hybrid Processor |
| SPAK56F803BU80 | 制造商:Freescale Semiconductor 功能描述: |
| SPAK56F805FV80 | 制造商:Freescale Semiconductor 功能描述: |
| SPAKDSP303AG100 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC SPAKDSP303AG100 RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
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