2/24/2008 9T6WP
Preliminary Hardware Data Module
BCM7405
06/29/07
Functional Description
Bro a d c o m Co rp o r a ti o n
Document
7405-1HDM00-R
Video and Graphics Display Page 1-55
Supported PC Scan Rates
and
illustrate the clock rates that the DVI core can generate as well as the PC format resolutions that
it can support.
Table 1-12: DVI PC Scan Clock Rates
Mode of Operation
Frequency
Frequency
Ratio from
27 MHz
Ratio from
25 MHz
Comments
Consumer Electronics Display Modes
25.175
25.200
14/15
–
Safe mode
27.000
27.027
1/1
–
–
54.000
54.054
2/1
–
–
74.175
74.250
11/4
–
–
VESA display modes
40.000
40.040
–
8/5
–
65.000
65.065
–
13/5
–
Table 1-13: PC Display Support
Resolution
Refresh Rate (Hz)
Horizontal Frequency (kHz) Pixel Frequency (MHz)
Standard Type
640 x 480
60
31.5
25.175
Industry Standard
800 x 600
60
37.9
40.000
VESA Guidelines