IA80C152_10 Datasheet, PDF (49/61 Pages) InnovASIC, Inc – Universal Communications Controller

IA80C152
Universal Communications Controller
Data Sheet
July 29, 2010
Table 32. Global Serial Port Timing—External Clock
Symbol
Parameter
1/ECBT GSC frequency with an external clock
ECH
ECL
ECRT
ECFT
ECDVT
ECDHT
ECDSR
ECDHR
External clock high
External clock low
External clock rise time
External clock fall time
External clock to data valid out—transmit
(to external clock negative edge)
External clock to data hold—transmit (to
external clock negative edge)
External clock to data set-up—receiver (to
external clock positive edge)
External clock to data hold—receiver (to
external clock positive edge)
16.5 MHz
Variable Oscillator
Min Max
Min
Max
– 2.4
–
Fosc ×
0.145
170 – 2TCLCL + 45
–
170 – 2TCLCL + 45
–
– TBD
–
20
– TBD
–
20
– 33
–
150
3–
0
–
55 –
45
–
63 –
50
–
Unit
MHz
ns
ns
ns
ns
ns
ns
ns
ns
EXTERNAL_CLOCK
ECBT
ECL
ECH
TRANSMIT_DATA
ECDHT
EXTERNAL_CLOCK
ECBT
ECDVT
RECEIVE_DATA
ECDHR
ECDSR
Figure 13. GSC Timings (External Clock)
®
IA211040524-06
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