CY325 ETC, CY325 Datasheet - Page 39
CY325
Manufacturer Part Number
CY325
Description
Stepper System Controller
Manufacturer
ETC
Datasheet
1.CY325.pdf
(107 pages)
- Current page: 39 of 107
- Download datasheet (2Mb)
When crystal frequencies other than 11 MHz are used, the fixed rates will be scaled linearly by
the crystal frequency, while the self-adaptive rate will attempt to compensate for the new crystal
frequency. For most crystal frequencies above 11 MHz, the CY545 can adapt successfully to
baud rates of 4800 baud or less, with a small enough error to insure reliable operation of the
serial interface. However, at 14.7456 MHz, the CY545 can adapt to all baud rates up to 19,200,
plus two non-standard rates of 38,400 and 76,800 baud.
The CY545 will set the baud rate during the execution of the Mode command, and the new rate
will be in effect until a hardware reset occurs or another Mode command is issued, with B6 set.
When the adaptive rate is selected, the CY545 must receive two carriage returns before the
operating baud rate will be defined again, so this selection may only be used if serial data is
coming into the CY545. No transmissions will occur until the baud rate is again defined.
© 2002 Cybernetic Micro Systems
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9-F
Selected Rate
@ 11 MHz
300
600
1200
2400
4800
9600
19200
57600
Self Adaptive
(up to 19200 baud)
Undefined
34
Chapter 9 - Operating Mode Command
www.ControlChips.com
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