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SX1210
ADVANCED COMMUNICATIONS & SENSING
5.3.4. uC Connections
SX1210
DATA
IRQ_0
IRQ_1 (DCLK)
NSS_CONFIG
uC
SCK
MOSI
MISO
Figure 29: uC Connections in Continuous Mode
Note that some connections may not be needed depending on the application:
IRQ_0: if Sync and RSSI interrupts are not used. In this case, leave floating.
IRQ_1: DCLK connection is not compulsory. In this case, leave floating.
MISO: if no read register access is needed. In this case, pull-up to VDD through a 100 k ? resistor.
In addition, NSS_DATA pin (unused in continuous mode) should be pulled-up to VDD through a 100 k ? resistor.
Please refer to Table 11 for SX1210’s pins configuration
5.3.5. Continuous Mode Example
Configure all data processing related registers listed below appropriately. In this example we assume that both
Bit synchronizer and Sync word recognition are on.
Table 16: Relevant Configuration Registers in Continuous Mode (data processing related only)
Description
MCParam
Data_mode_x
Defines data operation mode (
Continuous)
IRQParam
RXParam
SYNCParam
Rx_stby_irq_0
Sync_on
Sync_size
Sync_tol
Sync_value
Defines IRQ_0 source in Rx mode
Enables Sync word recognition
Defines Sync word size
Defines the error tolerance on Sync word recognition
Defines Sync word value
Program Rx interrupts: IRQ_0 mapped to Sync (Rx_stby_irq_0=”00”) and IRQ_1 mapped to DCLK (Bit
synchronizer enabled)
Go to Rx mode (note that Rx is not ready immediately, see Figure 40)
Wait for Sync interrupt
Get all packet bits on DATA pin synchronously with DCLK signal provided on IRQ_1
Go to Sleep mode
Rev 2– Sept 8 , 2008
th
Page 37 of 73
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