MCIMX31 Datasheet, PDF (70/170 Pages) Freescale Semiconductor, Inc – Multimedia Applications Processors

Electrical Characteristics
4.3.3 Clock Amplifier Module (CAMP) Electrical Characteristics
This section outlines the Clock Amplifier Module (CAMP) specific electrical characteristics. Table 19
shows clock amplifier electrical characteristics.
Table 19. Clock Amplifier Electrical Characteristics
Parameter
Min
Typ
Input Frequency
8.0
–
VIL (for square input)
VIH (for square input)
Sinusoidal Input Amplitude
0
–
(VDD ¹- 0.25)
–
0.4 ²
–
Duty Cycle
45
50
1 _{VDD is the supply voltage of CAMP}
2 _{This value of the sinusoidal input will be measured through characterization.}
Max
34.0
0.3
3
VDD
55
Units
MHz
V
V
Vp-p
%
4.3.4 1-Wire Electrical Specifications
Figure 5 depicts the RPP timing, and Table 20 lists the RPP timing parameters.
1-Wire bus
(BATT_LINE)
OWIRE Tx
“Reset Pulse”
DS2502 Tx
“Presence Pulse”
OW2
OW1
OW3
OW4
Figure 5. Reset and Presence Pulses (RPP) Timing Diagram
Table 20. RPP Sequence Delay Comparisons Timing Parameters
ID
OW1
OW2
OW3
OW4
Parameters
Reset Time Low
Presence Detect High
Presence Detect Low
Reset Time High
Symbol
Min
Typ
Max
t_RSTL
480
511
–
t_PDH
15
–
60
t_PDL
60
–
240
t_RSTH
480
512
–
Figure 6 depicts Write 0 Sequence timing, and Table 21 lists the timing parameters.
Units
µs
µs
µs
µs
i.MX31/i.MX31L Advance Information, Rev. 1.4
70
Freescale Semiconductor
Preliminary