Information

Installation and Operation

2.3.4 Demo #4 Operation - Pass Through Mode

In Demo #4, the MCP2120/22 Developer’s Board #2 will take any data that is received

from the IR interface and send it out the UART interface (after passing through the PIC)

to the PC’s serial port. Any data that is received from the UART interface will be sent

out the IR interface (after passing through the PIC).

This shows the MCP2120/22 encoding and decoding data between the IR port and the

Host UART port. In this configuration the MCP2120/22 Developer’s Board can be used

as a IR to UART dongle.

Figure 2-7 shows the system setup for this test, while Figure 2-8 shows the jumper

configuration for the MCP2120/22 Developer’s Board. Lastly, Table 2-7 shows the

steps for Demo #4 operation.

FIGURE 2-7: DEMO #4 SYSTEM BLOCK DIAGRAM

(1)

Hyperterminal to Serial Port Settings

The com port settings should be configured as:

• 115200 Baud

•8-bits

•No Parity

• One Stop

• No Flow Control

HyperTerminal

Program Window A

(Com 1)

(1)

(Com 2)

(2)

Com 2

System #1

(1)

System #2

MCP2120/22 Developer’s

Board

MCP2120/22 Developer’s

Board

HyperTerminal

Program Window B

(2)

(3)

Note 1: The PC may be a Notebook with an Integrated IR port.

2: Serial cable. Connects MCP2120/22DM to PC.

3: USB cable (for power only).

(3)

Com 1

(2)

Monitor