User Guide

PAMS
System Module DB6
NHB–3
Technical Documentation
Original 26/97
Page 4–36
RFI
Introduction
The RFI block consists of the RFI ASIC and its reference voltage generator.
This block is an interface between the RF and baseband sections. The RFI
block has the following functions:
– IF receiving and AD conversion
– I/Q separation
– I– and Q–transmit and DA conversion
– AFC DA
– TXC
– AGC (in combination with TXC)
Technical Specification
External Signals and Connections, Inputs
Signal name Signal description From
VL1 Logic supply voltage. Max 150 mA. PWRU
VA2 Analog supply voltage. Max 80 mA. PWRU
RESETX Master (power up) reset ASIC
RFIAD(3:0) RFI address bus ASIC
RDX Read strobe ASIC
WRX Write strobe ASIC
RFICLK RFI master clock ASIC
RFI2CLK RFI sleep clock ASIC
RXQ RX quadrature signal RF
RXI RX inphase signal RF
External Signals and Connections, Outputs
Signal name Signal description To
DAX Data acknowledge ASIC
AFC Automatic frequency control voltage RF
TXC TX transmit power control voltage, RF
AGC–control