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參數(shù)資料
| 型號： | TZA1047HL/M1B |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 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 |
| 文件頁數(shù)： | 18/69頁 |
| 文件大小： | 324K |
| 代理商： | TZA1047HL/M1B |
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9397 750 14664
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 1 June 2005
25 of 69
Philips Semiconductors
TZA1047
Preprocessor IC for CD and DVD rewritable
When bit FR = bit FW = 0, a transition from read to write is indicated by the occurrence of
two edges in signal efmd within an interval of 15T or less, where T is the period of efmc.
Then r/w goes LOW after (18 + D1) × T after the rst edge in efmd, where D1 is a
programmable parameter. A transition from write to read occurs when during an interval of
15T no edges are detected in efmd. Then r/w becomes HIGH after (18 + D1) × T after the
nal edge in efmd. Note that the HIGH or LOW state of efmd is irrelevant for read/write
detection, only the occurrence of transitions matter. In general, both efmc and efmd will
become stationary in either LOW or HIGH states during read, although this is not
required.
The status of bits FR and FW control the mode of the r/w signal as shown in Table 10.
Fig 12. Generation of r/w in internal mode.
mce520
EFMc
EFMd
EFMc
EFMd
r/w
(18
+ D1) × T
(18
+ D1) × T
≤ 15 × T
READ
WRITE
READ
T
Table 10:
R/W modes
FW
FR
Mode
r/w
EFMINT = 1
EFMINT = 0
0
internal
determined by
EFM clock and
data
undened
0
1
forced read
1
0
forced write
0
1
external
determined by
external R/W
determined by
external R/W
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