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參數(shù)資料
| 型號(hào)： | EM4469V0WW11 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 512 bit Read/Write Contactless Identification Device |
| 中文描述： | 512位讀/寫(xiě)非接觸式識(shí)別裝置 |
| 文件頁(yè)數(shù)： | 5/11頁(yè) |
| 文件大小： | 305K |
| 代理商： | EM4469V0WW11 |
EM4469
Copyright
2003, EM Microelectronic-Marin SA
5
www.emmicroelectronic.com
Word types:
RW:
RO:
WO:
OTP: Bits of this word are One Time Programmable
Reading and Writing possible
Read Only, changing content of this word is not possible
Write Only, reading of this word is not possible
Chip Type is a fix 4 bit number indicating member of the
compatible family of chips. Resonant Capacitor is a fix 2
bit number indicating the value of integrated resonant
capacitor. Customer Code is a 10 bit fixed code
attributed to a customer. The other bits of word 0 are
reserved for future use.
Word 1 contains 32 bit Unique Identification number
(UID), which can not be changed by user.
The 32 bit Password word has to be sent in Login
command to enable password protected operations. The
Password word can not be read out by Read Word
command.
The Protection word protects EEPROM words from being
written. Every EEPROM word is protected by a pair of
bits in Protection word. Once this bit pair is set to 11 the
word cannot be written (it becomes read-only).
The Configuration word defines operating options:
Data rate, Encoder, Last default read word (LWR), use of
Password and some other options are defined in this
word.
Organisation of Word 0
Chip Type
Bits ct
1
to ct
4
of word 0 are indicating member of the
compatible family of chips.
ct
1
,..ct
4
0100
Chip Type
EM4469
Resonant Capacitor
Bits ct
5
and ct
6
are used to indicate resonant capacitor
value.
ct
5
,ct
6
00
Resonant cap
no resonant
capacitor
75 pF
250 pF
330 pF
10
01
11
Customer Code
Bits ct
9
to ct
18
are attributed to Customer code. Every
customer can ask to get its own customer code. Default
Customer code is 1000000000, where the leftmost bit is
ct
9.
Bits ct
0,
ct
7,
ct
8
and ct
19
- ct
31
are reserved for future use
and are set to 0.
Organisation of Configuration Word
Configuration word is used to define device operating
mode.
co
0
– co
5:
Bits co
0
– co
5
define a binary number ‘n’ where co
0
is
LSB and co
5
is MSB. Data rate is defined as f
RF
/2(n+1),
where n
≥
1. The lowest data possible is therefore
f
RF
/128 and the highest f
RF
/4.
Data rate
co
6
– co
9:
Encoder
co
6
– co
9
0000
1000
0100
1100
1010
0110
0001
other
Encoder
no encoding (NRZ)
Manchester
Biphase
Miller
PSK2
PSK3
FSK
not used
co
10
, co
11:
PSK carrier frequency
co
10
, co
11
00
10
01
11
PSK CF
f
RF
/2
f
RF
/4
f
RF
/8
not used
co
12
, co
13:
Not used
co
14
- co
17
Bits co
14
- co
17
contain the binary word address of last
word read in default read. co
17
is MSB and co
14
is LSB.
Please note that valid range is only from 5 to 15.
Last default read word (LWR)
co
18:
In case this bit is set to logic 1 the reading of all words
except RO words 0 and 1 by using Read Word command
is protected. In order to read any of these words using
Read Word command a Login Flag has to be set.
Read login
co
19:
In case this bit is set to logic 1 the reading of all
Housekeeping words by using Read Word command is
protected. In order to read any Housekeeping word using
Read Word command a Login Flag has to be set. Of
course Password (word 2) can not be read since reading
of this word is never possible.
Read Housekeeping login
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相關(guān)代理商/技術(shù)參數(shù) |
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| EM4469V0WW27 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:512 bit Read/Write Contactless Identification Device |
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| EM4469V1WS27 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:512 bit Read/Write Contactless Identification Device |
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