参数资料
型号: TDA8754HL/21/C1
厂商: NXP SEMICONDUCTORS
元件分类: ADC
英文描述: 3-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP144
封装: 20 X 20 MM, 1.40 MM HEIGHT, LEAD FREE, PLASTIC, MS-026, SOT486-1, LQFP-144
文件页数: 21/57页
文件大小: 259K
代理商: TDA8754HL/21/C1
TDA8754_7
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 07 — 3 May 2007
28 of 57
NXP Semiconductors
TDA8754
Triple 8-bit video ADC up to 270 Msample/s
9.8 Phase register
Table 29.
PLLCTRL - PLL control register (address 0Ah) bit description
Bit
Symbol
Description
7 to 6
IP[1:0]
charge pump current value to increase the bandwidth of the PLL
00 = 800
A
01 = 1200
A
10 = 1600
A
11 = 2000
A
5 to 3
Z[2:0]
internal resistance value for the Voltage Controlled Oscillator (VCO) lter to be selected
000 = not used
001 = 1.56 k
010 = 1.25 k
011 = 1.00 k
100 = 0.80 k
101 = 0.64 k
110 = 0.51 k
111 = 0.41 k
3 to 0
DR[2:0]
PLL temperature phase drift to be compensated. The optimized value of this register is 001. These
bits add a delay on the clock reference input of the PLL as a function of the temperature of the die.
000 = +1.75 step phase
001 =
0.3 step phase
010 =
4.3 step phase
011 =
6.2 step phase
100 =
2.2 step phase
Table 30.
PHASE - phase register (address 0Bh) bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
PA4
PA3
PA2
PA1
PA0
VCO2
VCO1
VCO0
Reset
00000101
Access
WWWWWWWW
Table 31.
PHASE - phase register (address 0Bh) bit description
Bit
Symbol
Description
7 to 4
PA[4:0]
phase shift value for the clock pixel; see Table 32
3 to 0
VCO[2:0]
VCO gain control; see Table 33
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