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參數(shù)資料
| 型號(hào)： | R8820LV |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 16-BIT RISC MICROCONTROLLER |
| 中文描述： | 16位RISC微控制器 |
| 文件頁數(shù)： | 34/98頁 |
| 文件大小： | 1000K |
| 代理商： | R8820LV |
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R DC
RISC DSP Controller
R8820LV
RDC Semiconductor Co.
Rev:1.0
Subject to change without notice
34
Bit 15
: Reserved
Bit 14-8: M6-M0
,MCSBlock Size. These bits determines the total block size for the MCS3-MCS0chip selects. Each
individual chip select is active for one quarter of the total block size. For example, if the block size is 32K bytes
and the base address is located at 20000h. The individual active memory address range of MCS3to MCS0is
MCS0– 20000h to 21FFF, MCS1-22000 to 23FFFh, MCS2- 24000h to 25FFFh, MCS3- 26000h to 27FFFh.
MCSx total block size is defined by M6-M0,
M6-M0
,
Total block size
, MCSx
address active range
0000001b , 8k , 2k
0000010b , 16k , 4k
0000100b , 32k , 8k
0001000b , 64k , 16k
0010000b , 128k , 32k
0100000b , 256k , 64k
1000000b , 512k , 128k
Bit 7 : EX
, Pin Selector. This bit configures the multiplex output which the PCS6 -PCS5 pins as chip selects or A2-A1.
Set 1 :PCS6 , PCS5 are configured as peripheral chip select pins.
Set 0:PCS6 is configured as address bit A2,PCS5 is configured as A1.
Bit 6: MS
, Memory or I/O space Selector.
Set 1: ThePCSx pins are active for memory bus cycle.
Set 0: ThePCSx pins are active for I/O bus cycle.
Bit 5-3
: Reserved
Bit 2 : R2
, Ready Mode.
This bit is configured to enable/disable the wait states inserted for the PCS5,PCS6 chip selects. The
R1,R0 bits of this register determine the number of wait state to insert.
set to 1: external ready is ignored
set to 0: external ready is required
Bit 1-0 : R1-R0
, Wait-State value. The R1,R0 determines the number of wait states inserted into a PCS5 -PCS6 access.
(R1,R0) : (1,1) – 3 wait states , (1,0) – 2 wait states, (0,1) – 1 wait states , (0,0) – 0 wait states
12.4
PCSx
The peripheral or memory chip selects which are programmed through A4h and A8h register to define these pins.
Offset : A8h
Reset Value :
2
3
0
1
4
5
6
7
8
9
10
11
12
13
14
15
M6 - M0
MS
1
1
1
R2
R1
R0
EX
1
PCS and MCS Auxiliary Register
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相關(guān)代理商/技術(shù)參數(shù) |
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| R8821 | 制造商:RDC 制造商全稱:RDC 功能描述:16-BIT RISC MICROCONTROLLER |
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| R8830 | 制造商:RDC 制造商全稱:RDC 功能描述:16-BIT RISC MICROCONTROLLER |
| R8830I | 制造商:RDC 制造商全稱:RDC 功能描述:16-BIT RISC MICROCONTROLLER |
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