IRCC2.0 Datasheet, PDF (4/87 Pages) SMSC Corporation – Infrared Communications Controller

INTERFACE DESCRIPTION
The Interface Description lists the signals that
are required to place the IrCC 2.0 in a larger
chip-level context.
There are four groups of signals in this section:
PORT signals, HOST BUS controls, SYSTEM
controls, and CHIP-LEVEL CONFIGURATION
controls.
PORTS
The four Ports (IR, COM, AUX, and General
Purpose) provide external access for serial data
and controls. The active IrCC 2.0 encoder is
routed through the Output Multiplexer to either
the IR, COM, or AUX port. The General Purpose
port provides external access for controls that
are independent of the IrCC 2.0 Block Control
bits or the Output Multiplexer.
NAME
IRRx
IRTx
Table 1 - IR Port Signals
SIZE (BITS) TYPE
DESCRIPTION
1
Input
Infrared Receive Data
1
Output Infrared Transmit Data
NAME
CRx
CTx
nRTS
nDTR
nCTS
nDSR
nDCD
nRI
Table 2 - COM Port Signals
SIZE (BITS) TYPE
DESCRIPTION
1
Input COM Receive Data
1
Output COM Transmit Data
1
Output Request to Send
1
Output Data Terminal Ready
1
Input Clear To Send
1
Input Data Set Ready
1
Input Data Carrier Detect
1
Input Ring Indicator
Table 3 - AUX Port Signals
(E.g., can be used for high-current drivers for Consumer IR)
NAME SIZE (BITS) TYPE
DESCRIPTION
ARx
1
Input Aux. Receive Data
ATx
1
Output Aux. Transmit Data
4