MCP2150 Microchip Technology, Inc., MCP2150 Datasheet - Page 17

• Manufacturer Part Number: MCP2150
• Description: The MCP2150 Provides Irda Protocol Handling Plus Bit Encoding/decoding Functionality For Data Terminal Equipment (DTE) Applications in One Low Pincount Device
• Manufacturer: Microchip Technology, Inc.

FIGURE 2-10:
Normal Disconnect Mode (NDM)
Discovery
Normal Response Mode (NRM)
2002 Microchip Technology Inc.
Open channel for IAS Queries
(approximately 70ms
(max timeslots - y frames)
between XID commands)
Primary Device
Finish sending XIDs
Broadcast ID
Send SNRM Command
(w/ parameters and
connection address)
Send XID Commands
(timeslots n, n+1, ...)
Open channel for data
Send Data or Status
Send Data or Status
CONNECTION SEQUENCE
Send IAS Queries
Shutdown link
Preliminary
Secondary Device
Confirm channel open for data
(MCP2150 CD pin driven low)
Send Data or Status
Provide IAS responses
Send Data or Status
No Response to these XIDs
No Response to Broadcast ID
Confirm channel open for IAS
Confirm shutdown
(back to NDM state)
No Response
XID Response in timeslot y,
claiming this timeslot, (MCP2150
always claims timeslot 2)
UA response with parameters
using connect address
(ex. MCP2150)
MCP2150
DS21655B-page 17