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| 型号： | HCS473PQTP |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | IC EEPROM SPI BUS 8KBIT 8-SOIC |
| 中文描述： | 跳码编码器和转发器 |
| 文件页数： | 31/68页 |
| 文件大小： | 1629K |
| 代理商： | HCS473PQTP |
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2002 Microchip Technology Inc.
Preliminary
DS40035C-page 29
HCS473
3.2.3.6
REQUEST HOPPING CODE
COMMAND
The REQUEST HOPPING CODE command tells the
HCS473 to increment the synchronization counter and
build the 32-bit code hopping portion of the encoder
code word.
A delay of T
HOP
occurs while the HCS473 increments
the counter (updating EEPROM values) and encrypts
the response.
RFRSP determines if the response will be transmitted
on the DATA pin. If enabled, the response will be a sin-
gle K
EE
L
OQ
code hopping code word, based on
Encoder mode options. The code word will contain a
button code of ‘0000
2
’, indicating the transmission did
not result from a button press.
LFRSP determines if the response will be transmitted
on the LC pins. The LC pin response will be the 32-bit
hopping portion of the code word, modulated PPM for-
mat.
If both RFRSP and LFRSP are enabled, the HCS473
will send the response on the DATA pin immediately fol-
lowed by the PPM response on the LC pins. Refer to
Section 3.2.1.7 for further response path details.
The next command must begin T
CMD
after the code
hopping response.
FIGURE 3-17:
REQUEST HOPPING CODE SEQUENCE (RF RESPONSE EXAMPLE)
F
T
SF
ACK
CMD
CRC
T
CMD
‘110
2
’
2 bits
T
HOP
RESPONSE
‘
‘
‘
L
Command
M
C
C
CRC
T
FINH
P
H
H
(
T
HOP
RF Response (RFRSP=1)
Optional Next
Command
T
CMD
b
b
b
Next
Command
T
CMD
T
CMD
Inductive In
(LC Pins)
RF Response
(DATA Pin)
T
CMD
T
CMD
with consecutive command
or if waiting for LF response
Wake Sequence
or
Previous Command
Response
M
L
相关PDF资料 |
PDF描述 |
|---|---|
| HCS473PROM | IC EEPROM SPI BUS 32KBIT 8-SOIC |
| HCS473PSQTP | Code Hopping Encoder and Transponder |
| HCS473SLQTP | Code Hopping Encoder and Transponder |
| HCS473SLROM | Code Hopping Encoder and Transponder |
| HCS473SLSQTP | Code Hopping Encoder and Transponder |
相关代理商/技术参数 |
参数描述 |
|---|---|
| HCS473-PQTP | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Code Hopping Encoder and Transponder |
| HCS473PROM | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Code Hopping Encoder and Transponder |
| HCS473-PROM | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Code Hopping Encoder and Transponder |
| HCS473PSQTP | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Code Hopping Encoder and Transponder |
| HCS473-PSQTP | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Code Hopping Encoder and Transponder |
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