1321XDSK-BDM Freescale Semiconductor, 1321XDSK-BDM Datasheet - Page 34

• Manufacturer Part Number: 1321XDSK-BDM
• Description: KIT STARTER DEV 1321X W/USB
• Manufacturer: Freescale Semiconductor
• Type: Sensor Demor

Specifications of 1321XDSK-BDM

• Frequency: 2.4GHz
• Wireless Frequency: 2.4 GHz
• Interface Type: SPI
• Modulation: DSSS OQPSK
• Security: 128 bit AES
• Operating Voltage: 2 VDC to 3.4 VDC
• Output Power: 2 dBm
• Antenna: F-Antenna
• Operating Temperature Range: - 40 C to + 85 C
• For Use With/related Products: MC1321x
• Lead Free Status / RoHS Status: Contains lead / RoHS compliant by exemption

5.7.1.1
Features of the SPI module use include:
5.7.1.2
Figure 19
Data is written to the double-buffered transmitter (write to SPI1D) and gets transferred to the SPI shift
register at the start of a data transfer. After shifting in a byte of data, the data is transferred into the
double-buffered receiver where it can be read (read from SPI1D). Pin multiplexing logic controls
connections between MCU pins and the SPI module.
When the SPI is configured as a master, the clock output is routed to the SPSCK pin, the shifter output is
routed to MOSI, and the shifter input is routed from the MISO pin.
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Used in master mode only
Programmable transmit bit rate (maximum usable rate is 8 MHz with modem)
Double-buffered transmit and receive
Serial clock phase and polarity option must be programmed to CPHA = 0 and CPOL = 0
Programmable slave select output to support modem SPI protocol
MSB-first data transfer
BUS RATE
CLOCK
is a block diagram of the SPI module. The central element of the SPI is the SPI shift register.
SPI SYSTEM
ENABLE
LSBFE
SPE
MSTR
SPI Features
SPI Module Block Diagram
CLOCK GENERATOR
SPIBR
MASTER/SLAVE
MODE SELECT
DIRECTION
SHIFT
OUT
SHIFT
Tx BUFFER (WRITE
Figure 19. Modem Dedicated SPI Block Diagram
MODE FAULT
Rx BUFFER (READ)
SPI SHIFT REGISTER
DETECTION
SHIFT
CLOCK
CLOCK
LOGIC
MODF
MC13211/212/213 Technical Data, Rev. 1.8
Rx BUFFER
FULL
SPRF
Tx BUFFER
EMPTY
SHIFT
SPTEF
SPTIE
SPIE
IN
MASTER CLOCK
SLAVE CLOCK
BIDIROE
SPC0
SSOE
MOD-
PIN CONTROL
M
S
M
S
M
S
MASTER/
SLAVE
SPI
INTERRUPT
REQUEST
SPSCK
MOSI
MISO
Connected onboard SiP
SS
MOSI
MISO
SPICLK
CE
Freescale Semiconductor
MODEM
PORT
SPI