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ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005
Category
VCO Frequencies 4) Divide ratio must be:
Step Up or Step
Down
*NOTE: REF in and step size are NOT validated on the '220D board. These validation sequences may not be appropriate for the MC145220D.
Category
VCO Frequencies 1) Divide ratio must be (violation
MOTOROLA
Freescale Semiconductor, Inc.
Validation Requirements
(this step skipped for '220D)
a)
262,143
('190, '191, '192, '200, '201, '202,
'220S with prescale = 64)
b)
131, 071
('220S with prescale = 32)
1) VCO output frequency <> – 999.99
(this is the number used to
represent n/a)
Table 3. Alert Messages
Validation Requirements
produces only an alert message,
value is allowed):
(this step skipped for '220D)
a)
4032
('190, '191, '192, '200, '201,
'220S with prescale = 64)
b)
992 ('220S with prescale = 32)
For More Information On This Product,
Go to: www.freescale.com
Corresponding Error Message
Illegal A and N Counter divide value,
value must be
262,143
–OR–
Illegal A and N Counter divide value,
value must be
262, 143 (freq. now
n/a)
Illegal A and N Counter divide value,
value must be
131,071
–OR–
Illegal A and N Counter divide value,
value must be
131.071 (freq. now n/a)
VCO frequency is invalid
Corresponding Alert Message
A and N Counter divide value is < 4032,
may be gaps in band coverage
A and N Counter divide value is < 992,
may be gaps in band coverage
MC145220EVK
17
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