參數(shù)資料
型號(hào)： EM4170A5CI2LB
英文描述： Multi-Purpose Precision Multiphase PWM Controller With Optional Active Voltage Positioning; Temperature Range: -40°C to 85°C; Package: 20-QFN
中文描述： 模擬雜項(xiàng)
文件頁(yè)數(shù)： 10/13頁(yè)
文件大小： 142K
代理商： EM4170A5CI2LB
EM4170
Copyright
2002, EM Microelectronic-Marin SA
6
www.emmicroelectronic.com
Commands
The commands are composed of 4 bits, divided into 3 data bits and 1 even parity bit (total amount of "1's" is even including
the parity bit). There exist 6 different commands. Upon reception of an unknown command or a command with wrong parity
the chip will immediately return into Standby Mode.
COMMAND BITS
FUNCTION
WRITE WORD
1 0 1 0
Parity bit
First bit
Recieved
AUTHENTICATION
0 1 1 0
ID-MODE
0 0 1 1
UM-MODE-1
0 1 0 1
Commands
SEND PIN
UM-MODE-2
1 0 0 1
1 1 1 1
Fig. 5
ID Mode
After reception of the command including the parity the chip sends a header consisting of 12 Manchester coded '1's
followed by 4 Manchester coded '0's. Then the chip sends the 32 Bits of ID contained in words 3 and 2 of the EEPROM
once without parity starting with the MSB of word 3. After completion the chip returns to Standby-Mode.
OUTPUT
Coded Data
Data
1 bit - 32 T0 periods
T0 = Period of RF carrier frequency
D31-D0
trID
1111111111110000
Header
LIW
Command
RM
INPUT
Fig. 6
UM-MODE-1
In UM-MODE-1 the chip sends LB1 and LB0 followed by the 30 Bits of UM1 starting with the MSB following the same
procedure as in ID-MODE. After completion the chip returns to Standby Mode
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