IBM PowerPC 403GCX
Serial Clock Timing Characteristics
Table 13. 403GCX Serial Clock Timings
Symbol
Parameter
SerClk input frequency
Min
Max
Units
FSC
TSC
0.5 FC
MHz
ns
SerClk period
2TC
TC
TSCH
TSCL
SerClk input high time
SerClk input low time
ns
TC
ns
Timer Clock Timing Characteristics
Table 14. 403GCX Timer Clock Timings
IOCR[2xC] = 1
CoreClk
Doubled Mode
IOCR[2xC] = 0
CoreClk
Non-Doubled Mode
Symbol
Parameter
Units
Min
Max
Min
Max
FTC
TTC
TimerClk input frequency
TimerClk period
FC
0.5 FC
MHz
ns
TC
2 TC
TC
TTCH
TTCL
TimerClk input high time
TimerClk input low time
0.5 TC
0.5 TC
ns
TC
ns
Table 15. 403GCX Serial Port Output Timings
25 MHz 33 MHz
40 MHz1,2
Symbol
Parameter
Units
TOHMin TOVMax TOHMin TOVMax TOHMin TOVMax
TOH TOV Output hold, output valid
,
TOHSP1 TOVSP1
DTR/RTS
XmitD
14
12
13
11
12
10
ns
,
TOHSP2 TOVSP2
,
Note:
1. Output times are measured with a standard 50 pF capacitive load, unless otherwise noted.
2. 403GCX-3JC80A and 403GCX-3BC80A with application relief applied meet all 40 MHz serial port output timings.
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