IRCC SMSC Corporation, IRCC Datasheet - Page 19

• Manufacturer Part Number: IRCC
• Description: INFRARED COMMUNICATIONS CONTROLLER
• Manufacturer: SMSC Corporation

Description
The Infrared Data Association (IrDA) was created
to develop an interoperable, low-cost, low-power,
half-duplex serial data interconnection standard
that supports a walk-up, point-to-point user
model that is adaptable to a wide range of
appliances and devices.
The IrDA Serial Infrared Data Link Standard,
Version 1.1 is the standard to which the SMSC
IrCC conforms. Relevant IrDA documents in this
specification include the SIR-Physical Layer
Specification, Version 1.1, October 17, 1995, the
SIR-Link Access Protocol (IrLAP), Version 1.0,
SIR Interaction Pulse
The SIR Interaction Pulse (SIP) is intended to
guarantee non-disruptive coexistence with SIR-
only systems which might otherwise interfere with
Fast IR links.
UART
SCE
FIGURE 11 - IRCC IRDA BLOCK DIAGRAM
FIR Encoders
SIR Encoder
1.152Mb/s
4Mb/s
SIP
19
June 23, 1994, and the Link Management
Protocol (IrLMP), Version 1.1, January 23, 1996.
The high-speed extensions (FIR) to the IrDA
physical layer as described in the SIR-Physical
Layer
modulation and demodulation paths for data from
IrLAP bound for the IR medium and are
transparent to IrLAP as it is defined for SIR.
IR hardware and software must comply as a
system
specifications, including the SIR/FIR-Physical
Layer Specifications, IrLAP, and IrLMP.
A block diagram of one end of an IrDA link that
includes
implementations is shown in Figure 11.
A SIP is defined as a 1.6 microsecond
transmitter
microseconds of off time (Figure 12). Once a
Fast connection has been established the station
must generate one SIP every 500ms.
Transceiver
Specification
with
Module
the
on
IR
the
SIR
pulse
entire
appear
and
IR Out
IR In
followed
family
FIR
as
of
by
alternate
physical
IrDA
7.1