MC9328MXL ETC, MC9328MXL Datasheet - Page 76

• Manufacturer Part Number: MC9328MXL
• Description: i.MX Integrated Portable System Processor
• Manufacturer: ETC

Specifications
The limitation on pixel clock rise time / fall time are not specified. It should be calculated from the hold time and
setup time, according to:
Rising-edge latch data
In most of case, duty cycle is 50 / 50, therefore
For example: Given pixel clock period = 10ns, duty cycle = 50 / 50, hold time = 1ns, setup time = 1ns.
76
max rise time allowed = (positive duty cycle - hold time)
max fall time allowed = (negative duty cycle - setup time)
max rise time = (period / 2 - hold time)
max fall time = (period / 2 - setup time)
positive duty cycle = 10 / 2 = 5ns
=> max rise time allowed = 5 - 1 = 4ns
VSYNC
HSYNC
DATA[7:0]
PIXCLK
Ref No.
1
2
3
4
5
6
7
Figure 60. Sensor Output Data on Pixel Clock Rising Edge
Table 31. Gated Clock Mode Timing Parameters
csi_vsync to csi_hsync
csi_hsync to csi_pixclk
csi_d setup time
csi_d hold time
csi_pixclk high time
csi_pixclk low time
csi_pixclk frequency
1
CSI Latches Data on Pixel Clock Falling Edge
MC9328MXL Advance Information, Rev. 5
Parameter
3
2
Valid Data
4
10.42
10.42
Min
180
1
1
1
0
Valid Data
6
7
Max
48
–
–
–
–
–
–
5
Valid Data
Unit
MHz
ns
ns
ns
ns
ns
ns
Freescale Semiconductor