EM77950
BB Controller
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Base Band (BB) function interrupts:
CSD: carrier sense detection
TX_AE: TX_FIFO almost full
RX_AF: RX_FIFO almost full
TX_ EMPTY: finish a transmitting a package
RX_OF: RX_FIFO overflow
LINK_DIS: zero counter capacitor discharge mechanism
LOCK_OUT: finish receiving a package
LOCK_IN: start receiving a package
2.6 Baseband (BB)
Serial to Parallel conversion of RFW102 interface
Parallel interface to RFW102 modem
Serial to Parallel conversion of RFW102 interface
Input FIFO (RX_FIFO)
Output FIFO (TX_FIFO)
Preamble Correlation
Packet Address Filter (Network and unique)
CRC calculation
Inter-RFWAVES networks Carrier-sense
Discharge of RFW-102 reference capacitor
Compensate for clock drifts between the transmitting EM77950 and the receiving
EM77950 up to 1000ppm. Hence, the EM77950 requires low performance crystal.
Interrupt Driver – connected to the EM77950’s internal interrupt and informs the
EM77950 about BB events.
2.7 Serial Peripheral Interface (SPI)
Either MSB or LBS can be transmitted/received first
Both Master and Slave modes available
2.8 Pulse Width Modulation (PWM)
Dual Pulse Width Modulation (PWM) with 16-bit resolution
2.9 Analog to Digital Converter (ADC)
16 multi-channel Analog to Digital Converter with 8-bit resolution
Product Specification (V1.0) 10.09.2007
(This specification is subject to change without further notice)
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ELAN [ ELAN MICROELECTRONICS CORP ]
