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參數(shù)資料
| 型號(hào)： | TZA1047HL/M3 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, 1.4 MM HEIGHT, PLASTIC, MS-026, SOT314-2, LQFP-64 |
| 文件頁(yè)數(shù)： | 20/69頁(yè) |
| 文件大?。?/td> | 324K |
| 代理商： | TZA1047HL/M3 |
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9397 750 14664
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 1 June 2005
27 of 69
Philips Semiconductors
TZA1047
Preprocessor IC for CD and DVD rewritable
Sampling on the current run length with length N is disabled if N < NDIS1. The value of
NDIS1 can be in the range 3 to 6 selected by TIM9[1:0]. If NDIS1 = 3, all run lengths in a
regular EFM-sequence are sampled (no discrimination), if NDIS1 = 4, all run lengths >3T
are sampled, and so on.
7.10.2.3
Signal RS
The signal RS is used in the Normalizer for sampling the RF signal to obtain the reection
from the disc. It is dened in the timing diagram shown in Figure 14.
The signal LIGHT is the same signal shown in the timing diagram for TH1 and TH2,
Figure 13. Signal RS is synchronously derived from LIGHT. It is either active or inactive,
dened by bit ENRS and the state of signal r/w. Signal RS is inactive when bit ENRS = 0
or signal r/w = 1; when inactive, signal RS is always HIGH. Signal RS is active when bit
ENRS = 1 and signal r/w = 0; when active, RS goes HIGH m1 × T/2 periods after the
trailing edge of LIGHT (i.e. in the land region), and LOW (n1 2) × T/2 periods after the
rising edge of LIGHT, where m1 = 0 to 15 and n1 = 0 to 7. For run lengths of length N × T,
RS remains LOW if m1/2 ≥ N (run length discrimination). Also, if for a given land region
the rising and falling edges of RS coincide or even reverse in places due to the choice of
values for m1 and n1, RS remains LOW.
7.10.3 Enabling bits
In internal mode with EFMTIM active or inactive (EFMINT = 1, EFMON=0or1), the state
of the various EFMTIM output signals can be overruled by the enabling bits ENRS, ENRW
and SMPLON according to Table 11. The signals should comply with this table even if
the EFMTIM block has not been reset.
Fig 14. Signal RS.
001aab196
T/2
T
EFM
c
EFM
d
LIGHT
RS
pit
land
(17
+ D2) × T
(n1 2) × T/2
m1 × T/2
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