MCP2122 Datasheet, PDF (1/34 Pages) Microchip Technology – Infrared Encoder/Decoder

MCP2122
Infrared Encoder/Decoder
Features
• Pinout compatible with HSDL-7000
• Compliant with IrDA^® Standard Physical Layer
Specification (version 1.3)
• UART to IrDA Standard Encoder/Decoder
- Interfaces with IrDA Standard Compliant
Transceiver
• Baud Rates:
- Up to IrDA Standard 115.2 Kbaud Operation
• Transmit/Receive Formats (Bit Width) Supported:
- 1.63 µs
• Low-power Mode (2 µA at 1.8V, +125°C)
CMOS Technology
• Low-voltage operation
• Extended temperature range
• Low power consumption
Package Types
PDIP, SOIC
16XCLK
1
8
TX
2
7
RX
3
6
VSS
4
5
Block Diagram
MCP2122
TX
Encode
RESET
16XCLK
RX
Reset
Logic
Baud Rate
Generator
Decode
VDD
TXIR
RXIR
RESET
TXIR
RXIR
IrDA Family Selection
Device
Baud Rate
Host
UART
IR
Encoder
/
Decoder
Protocol
Layer
Handler
Clock
Source
Host UART
Baud Rate
Selection
Comment
MCP2120 2400 -
2400 -
Yes
312,500 ⁽¹⁾ 312,500 ⁽¹⁾
MCP2122 2400 -
2400 -
Yes
115,200 ⁽¹⁾ 115,200 ⁽¹⁾
MCP2140 9600
9600
Yes
No
XTAL HW/SW
No
IrCOMM
(3)
16XCLK By 16XCLK Extended Temperature Range
(-40°C to +125°C)
XTAL None - Fixed
MCP2150 9600 -
9600 -
Yes
115,200 ⁽²⁾ 115,200 ⁽²⁾
IrCOMM XTAL
(3)
HW
Host UART easily interfaces to
a PC’s serial port (DTE)
MCP2155 9600 -
9600 -
Yes
115,200 ⁽²⁾ 115,200 ⁽²⁾
IrCOMM XTAL
(3)
HW
Host UART easily interfaces to
a modem’s serial port (DCE)
Note 1: The host UART and the IR operate at the same baud rates.
2: The host UART and IR baud rates operate independent of each other.
3: Supports the 9-wire “cooked” service class of the IrCOMM Application Layer Protocol.
 2004 Microchip Technology Inc.
Preliminary
DS21894B-page 1