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參數(shù)資料
| 型號(hào)： | SAA4951 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | RES 6.49K OHM 1/16W 0.5% 0402SMD |
| 中文描述： | 內(nèi)存控制器 |
| 文件頁數(shù)： | 10/25頁 |
| 文件大?。?/td> | 95K |
| 代理商： | SAA4951 |
April 1994
10
Philips Semiconductors
Preliminary specification
Memory controller
SAA4951
As it can be seen from the above table the registers form groups which are reflected in the addressing scheme according
to Table 2.
Table 2
Internal register addressing scheme.
Note
1.
X = don’t care, D = data bit
The bits of the two mode registers control the operation modes.
Registers to turn on different modes
60
61
MODE0
MODE1
mode register 0
mode register 1
the bits of the two mode registers define the operating mode of the SAA4951
read mode
by sending this address the SAA4951 is switched to output mode for the next
address/data cycle, i. e. the microcontroller reads data from the SAA4951
80
READ
INTERNAL REGISTER ADDRESS
RW
OP
MO
AD
HV
D2
D1
D0
7
6
5
4
3
2
1
0
1
0
0
0
0
0
0
X
0
1
1
1
1
1
X
X
1
0
0
0
0
X
X
X
1
1
0
0
X
X
X
1
0
1
0
X
X
X
D
D
D
D
X
X
X
D
D
D
D
X
X
D
D
D
D
D
microcontroller reads data
all registers off
select mode 1 / mode 2
select hor. ACQ registers
select vert. ACQ registers
select hor. DSP registers
select vert. DSP registers
bit names:
RW
OP
MO
AD
HV
D2
D1
D0
read/write bit: 1 = read, 0 = write
operate bit, must be 1 to address any register
mode bit, select mode registers
select acquisition (= 1) or display (= 0) registers
select horizontal (= 1) or vertical (= 0) registers
data bit 2
data bit 1
data bit 0
ADDRESS
(HEX)
REGISTER
FUNCTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA4951WP | Memory controller |
| SAA4952WP | Memory controller |
| SAA4955 | 2.9-Mbit field memory |
| SAA4955TJ | 2.9-Mbit field memory |
| SAA4956TJ | 2.9-Mbit field memory with noise reduction |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA4951WP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Memory controller |
| SAA4952WP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Memory controller |
| SAA4955 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.9-Mbit field memory |
| SAA4955TJ | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.9-Mbit field memory |
| SAA4956TJ | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.9-Mbit field memory with noise reduction |
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