Laird Controls North America Inc. 79543-91072 ユーザーズマニュアル
LRM and PA Radio Module
Host Interface Definition
Document p/n: 9S02-7954-A001 Rev.A
Cattron-Theimeg Inc.
Proprietary and Confidential
Page 3-3
3.2
Signals Description
Pin
Nb
Nb
Signal
Name
Name
I/O
Description
Category
1, 2
VPA
Input
Voltage Supply, RF power amplifier.
This supply is needed when an optional piggy-back power amplifier board is
used. Specifications (voltage, current) depend on piggy-back board used.
used. Specifications (voltage, current) depend on piggy-back board used.
Power supply
3, 4
GND-PA
GND, RF power amplifier.
This ground is connected internally to the module ground. It does not need to
be connected when the module is used without PA
be connected when the module is used without PA
Power supply
22, 50 GND
System ground
Power supply
27
3V3
Input
3.3 V power supply voltage input (Vcc)
Power supply
5
!PGM
Input
Used to download on-board CPU firmware. Connect this signal to GND at
power-up to force the CPU to enter firmware programming mode. Otherwise,
connect to Vcc or leave unconnected
power-up to force the CPU to enter firmware programming mode. Otherwise,
connect to Vcc or leave unconnected
Module control
7
!RESET
Input
Main reset (active low). When reset is asserted, the content of the internal
registers is lost.
registers is lost.
Module control
29
!READY
Output Handshaking signal for transmit or receive data on the host interface.
Data
Transmission
Transmission
23
!RX_EN
Input
Receive Enable (active low). Used to place the RF module in received mode
*Note: when !TX_EN and !RX_EN are asserted simultaneously, the module is
placed in STANDBY mode (low power consumption, internal registers
conservation)
placed in STANDBY mode (low power consumption, internal registers
conservation)
Data
Transmission
Transmission
24
!TX_EN
Input
Transmit Enable (active low). Used to activate telegram transmit process
Data
Transmission
Transmission
25
RXD
Output Receive Data.
Data
Transmission
Transmission
26
TXD
Input
Transmit Data
Data
Transmission
Transmission
20
DCLK
Output Data Clock. Active when serial port is configured in Synchronous Mode
Data
Transmission
Transmission
21
!CONFIG
Input
Used to configure the Data transmission signals RXD and TXD for module
configuration.
Asserting can be done in IDLE state only. Active low
configuration.
Asserting can be done in IDLE state only. Active low
Configuration
interface
interface
37
SPI_PDI
Input
If configuration interface configured for SPI: PDI (Peripheral Data In)
Configuration
interface
interface
38
I2C_SDA
SPI_PDO
SPI_PDO
Bidi /
Output
Output
If configuration interface configured for:
I2C: I2C SDA signal (data)
SPI: PDO (Peripheral Data Out)
I2C: I2C SDA signal (data)
SPI: PDO (Peripheral Data Out)
Configuration
interface
interface
39
I2C_SCL
SPI_SCLK
SPI_SCLK
Bidi /
Input
Input
If configuration interface configured for:
I2C: I2C SCL signal (clock)
SPI: SCLK (Serial Clock)
I2C: I2C SCL signal (clock)
SPI: SCLK (Serial Clock)
Configuration
interface
interface
40
SPI_PLE
Input
If configuration interface is configured for SPI
PLE: (Peripheral Data Load Enable)
PLE: (Peripheral Data Load Enable)
Configuration
interface
interface
48
RX_BB
Output Analog demodulated RX signal
Data
Transmission
Transmission
Table 3.2 - Host Interface signals description