參數(shù)資料
型號(hào)： TVP70025IPZP
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP100
封裝： GREEN, PLASTIC, HTQFP-100
文件頁數(shù)： 7/59頁
文件大小： 519K
代理商： TVP70025IPZP
0.1 F
4.7 nF
1.5 kW
TVP70025I
PLL_F
FILT2
FILT1
89
88
87
SLES232B
– JUNE 2008 – REVISED MAY 2011
The purpose of the 2-bit VCO range control is to improve the noise performance of the TVP70025I. The
frequency ranges for the VCO are shown in Table 5. The phase of the ADC sample clock generated by the
horizontal
PLL
can
be
accurately
controlled
in
32
uniform
steps
over
a
single
clock
period
(360/32 = 11.25 degrees phase resolution) using the phase select register located at subaddress 04h.
The horizontal PLL characteristics are determined by the loop filter design, the PLL charge pump current, and the
VCO range setting. The loop filter design is shown in Figure 4. Supported settings of VCO range and charge
pump current for VESA standard display modes are listed in Table 5.
Figure 4. Horizontal PLL Loop Filter
In addition to sourcing the ADC sample clock from the horizontal PLL, an external pixel clock can be used (from
pin 80).
Table 5. Recommended VCO Range and Charge Pump Current Settings
for Supporting Standard Display Formats
PLL
VCO
CP
FRAME
PIXEL
PLLDIV
OUTPUT
LINE RATE
DIVIDER
RANGE
CURRENT
STANDARD
RESOLUTION
RATE
[11:4] REG
[3:0] REG
REG 03h
DIVIDER
(kHz)
TOTAL
REG 03h
(Hz)
(MHz)
01h [7:0]
02h [7:4]
REG 04h [0]
PIX/LINE
[7:6]
[5:3]
640
× 480
59.94
31.469
25.175
800
32h
00h
20h
0
ULow (00b)
100b
640
× 480
72.809
37.861
31.5
832
34h
00h
20h
0
ULow (00b)
100b
VGA
640
× 480
75
37.5
31.5
840
34h
80h
20h
0
ULow (00b)
100b
640
× 480
85.008
43.269
36
832
34h
00h
60h
0
Low (01b)
100b
800
× 600
56.25
35.156
36
1024
40h
00h
58h
0
Low (01b)
011b
800
× 600
60.317
37.879
40
1056
42h
00h
58h
0
Low (01b)
011b
SVGA
800
× 600
72.188
48.077
50
1040
41h
00h
58h
0
Low (01b)
011b
800
× 600
75
46.875
49.5
1056
42h
00h
58h
0
Low (01b)
011b
800
× 600
85.061
53.674
56.25
1048
41h
80h
58h
0
Low (01b)
011b
1024
× 768
60.004
48.363
65
1344
54h
00h
58h
0
Low (01b)
011b
XGA
1024
×768
70.069
56.476
75
1328
53h
00h
A8h
0
Med (10b)
101b
1024
× 768
75.029
60.023
78.75
1312
52h
00h
A8h
0
Med (10b)
101b
1280
× 768
59.995
47.396
68.25
1440
5Ah
00h
50h
0
Low (01b)
010b
WXGA
1280
× 768
59.87
47.776
79.5
1664
68h
00h
A0h
0
Med (10b)
100b
1440 x 900
59.01
55.469
88.75
1600
64h
00h
A0h
0
Med (10b)
100b
720
× 480i
29.97
15.374
13.5
858
35h
A0h
18h
0
ULow (00b)
011b
720
× 576i
25
15.625
13.5
864
36h
00h
18h
0
ULow (00b)
011b
720
× 480p
59.94
31.469
27
858
35h
A0h
18h
0
ULow (00b)
011b
720
× 576p
50
31.25
27
864
36h
00h
18h
0
ULow (00b)
011b
Video
1280
× 720p
60
45
74.25
1650
67h
20h
A0h
0
Med (10b)
100b
1280
× 720p
50
37.5
74.25
1980
7Bh
C0h
98h
0
Med (10b)
011b
1920
× 1080i
60
33.75
74.25
2200
89h
80h
98h
0
Med (10b)
011b
1920
× 1080i
50
28.125
74.25
2640
A5h
00h
90h
0
Med (10b)
010b
Copyright
2008–2011, Texas Instruments Incorporated
15
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