參數(shù)資料
型號(hào)： TZA1038HW,118
廠商： NXP Semiconductors
文件頁(yè)數(shù)： 19/45頁(yè)
文件大?。?/td> 0K
描述： IC DVD SIGNAL PROC 48-HTQFP
標(biāo)準(zhǔn)包裝： 2,500
系列： *
類(lèi)型： *
應(yīng)用： *
安裝類(lèi)型： 表面貼裝
封裝/外殼： 48-TQFP 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 48-HTQFP
包裝： 帶卷 (TR)
其它名稱(chēng)： 935273843118
TZA1038HW-T
TZA1038HW-T-ND
2003 Sep 03
26
Philips Semiconductors
Product specication
High speed advanced analog DVD signal
processor and laser supply
TZA1038HW
Table 29 Description of register bits (address FH); bit K2_Mode = 1
BIT
SYMBOL
FUNCTION
15 to 12
AD[3:0]
1111 = address FH
11 to 6
not used
5 to 3
DPD_LL[2:0]
DPD lead/lag lter start frequency (fstart).
000 = 1 MHz
001 = 5 MHz
010 = 10 MHz
011 = 18 MHz
100 = 24 MHz
2 to 0
DPD_LPF[2:0]
DPD low-pass lter (f3dB).
000 = 10 MHz
001 = 50 MHz
010 = 100 MHz
011 = 180 MHz
111 = 240 MHz
7.4
Internal digital control, serial bus and external
digital input signal relationships
The settings of all internal switches, DACs and modes of
operation can be programmed via the serial bus. There are
also a few external digital signals which influence the
programmed settings.
7.4.1
STANDBY MODE
To ensure a safe start-up, the TZA1038HW has an internal
Power-on reset that resets on bit PWRON. During
STANDBY mode, most circuits, including laser supplies,
are switched off.
bit CD_LDON = 1 if CD laser is on and POWERON
bit DVD_LDON = 1 if DVD laser is on and POWERON.
7.4.2
RF ONLY MODE
The servo outputs can be disabled for easy interfacing in
systems where two front-end signal processors are used.
This mode will set the outputs OA to OD, S1 and S2 to
3-state. The RF data path remains active.
7.5
Signal descriptions
The variables A1 to A3, ARFSUM, ALFC and ALFR, are the
linear equivalents of G1 to G3, GRFSUM, GLFC and GLFR.
7.5.1
DATA PATH SIGNALS THROUGH PINS A TO D
With bit RFSUM = 0:
(DVDRFP DVDRFN)=
A2 × 1/4 × [SW-A {(A OPUREF) × A1 RFOFFSL}
+ SW-B {(B
OPUREF) × A1 RFOFFSL}
+ SW-C {(C
OPUREF) × A1 RFOFFSR}
+ SW-D {(D
OPUREF) × A1 RFOFFSR}]
RFP = RFREF + 0.5
× A3 × (DVDRFP DVDRFN)
RFN = RFREF
0.5 × A3 × (DVDRFP DVDRFN)
Thus:
RFdif =
A3 × A2 × A1 ×
ABCD
++
+
4
-----------------------------------
OPUREF
RF
OFFS
–
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