參數資料
型號: TDA8754EL/11
廠商: NXP SEMICONDUCTORS
元件分類: ADC
英文描述: 3-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PBGA208
封裝: 17 X 17 MM, 1.05 MM HEIGHT, LOW PROFILE, PLASTIC, SOT-774-1, MO-192, BGA-208
文件頁數: 22/57頁
文件大?。?/td> 264K
代理商: TDA8754EL/11
9397 750 14984
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 06 — 16 June 2005
29 of 57
Philips Semiconductors
TDA8754
Triple 8-bit video ADC up to 270 Msps
9.9 PLL divider registers
Table 32:
Phase registers bits
PA4
PA3
PA2
PA1
PA0
Phase shift (deg)
000000
0
1
11.25
::::::
1
0
337.50
1
348.75
Table 33:
VCO gain control
VCO2
VCO1
VCO0
VCO gain
(MHz/V)
Pixel clock frequency
(MHz)
0
13
12to22
0
1
30
22to45
0
1
0
60
45to62
0
1
60
62to85
1
0
105
85 to 120
1
0
1
105
120 to 176
1
0
135
176 to 270
1
no oscillation
-
Table 34:
DIVMSB - PLL divider ratio (MSB) register (address 0Ch) bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
CKEXT
SCH CKREFO
EPSI1
EPSI0
DI11
DI10
DI9
DI8
Reset
0
000110
Access
W
WWWWWW
Table 35:
DIVMSB - PLL divider ratio (MSB) register (address 0Ch) bit description
Bit
Symbol
Description
7
CKEXT
external clock selection
0 = internal PLL
1 = external clock
6
SCH
CKREFO
shift of pixel counter reference (Ckref) with one clock pixel period
0 = not active
1 = active
5 to 4
EPSI[1:0]
enables the resynchronization edge of CKREFO to be selected; they are test bits
00 = reset value for proper operation
3 to 0
DI[11:8]
PLL divider ratio; these are the 4 MSBs of the 12-bit value; see Table 38
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