UR5HCSPI-06-FN View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'UR5HCSPI-06-FN' PDF : 20 Pages View PDF
COMMANDS FROM THE HOST TO THE UR5HCSPI-06
Commands from the Host - Summary
Command Name
Code
Initialize
AOH
Initialization Complete
A1H
Heartbeat Request
A2H
Identification Request
F2H
Resend Request
A5H
Input/Output Mode Modify
A7H
Output Data to I/O pin
A8H
Set Wake-Up Keys
A9H
Description
Causes the UR5HCSPI-06 to enter the power-on state
Issued as a response to the “Initialize Request”
The UR5HCSPI-06 will respond with “Heartbeat Response”
The UR5HCSPI-06 will respond with “Identification Response”
Issued upon error during the reception of a packet
The UR5HCSPI-06 will modify or report the status of the GIO0 pin
The UR5HCSPI-06 will output a signal to the GIO0 pin
Defines which keys are “wake-up” keys
Each command to UR5HCSPI-06 is composed of a sequence of codes. All commands start with <ESC> code
(1BH) and end with the LRC code (bitwise exclusive OR of all bytes).
COMMANDS FROM THE HOST TO THE UR5HCSPI-06 ANALYTICALLY
Initialize
<ESC>
1BH
<INIT>
A0H
<LRC>
7BH
When the UR5HCSPI-06 receives this command, it will clear all buffers and return to the power-on state.
Initialization Complete
<ESC>
1BH
<INIT COMPLETE>
A1H
<LRC>
7AH
When the UR5HCSPI-06 receives this command, it will enable transmission of keyboard data. Keyboard data
transmission is disabled if the TX output buffer is full (32 bytes). Note that if the transmit data buffer gets full the
encoder will issue an "Initialize Request" to the host.
Heartbeat Request
<ESC>
1BH
<ONLINE>
A2H
<LRC>
79H
When the UR5HCSPI-06 receives this command, it will reply with the Heartbeat Response Report.
Identification Request
<ESC>
1BH
<ID>
F2H
<LRC>
29H
The UR5HCSPI-06 will reply to this command with the Identification Response Report.
Copyright Semtech 1997-2001
12
DOC5-SPI-06-DS-103
www.semtech.com
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