- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372108 > SAA2500H (NXP SEMICONDUCTORS) MPEG Audio Source Decoder PDF資料下載
參數(shù)資料
| 型號： | SAA2500H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | MPEG Audio Source Decoder |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | 10 X 10 MM, 1.75 MM HEIGHT, PLASTIC, SOT-307-2, QFP-44 |
| 文件頁數(shù)： | 37/47頁 |
| 文件大?。?/td> | 199K |
| 代理商： | SAA2500H |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁當前第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁
September 1994
37
Philips Semiconductors
Preliminary specification
MPEG Audio Source Decoder
SAA2500
Halt mode
Table 36
Requirements for timing (halt mode); see Fig.21.
SYMBOL
PARAMETER
REQUIREMENT
≥
190
≥
190
≥
190
UNIT
t
d1
t
L
t
h2
L3CLK HIGH to L3CLK LOW delay time after L3MODE HIGH
L3MODE LOW time
L3CLK hold time before L3MODE LOW
ns
ns
ns
Slave device to microcontroller
t
d2
t
d5
L3DATA enable time after L3MODE HIGH
L3DATA disable time after L3MODE LOW
0 < t
d2
≤
50
0 < t
d5
≤
50
ns
ns
Fig.21 Timing (halt mode).
handbook, full pagewidth
MGB509
tL
L3CLK
L3MODE
d5
t
h2
t
td1
d2
t
L3DATA
IC to
microcontroller
SAA2500 L3 protocol enhancement options
The L3 interface on the SAA2500 is limited in speed,
dictated both by the maximum SAA2500 handling speed
and the upper frequencies of the L3 interfacing standard.
On the other hand, the SAA2500 offers several
enhancements, described in this section, to make a better
use of the SAA2500 L3 interface capacity. The
enhancements are optional. The applicant chooses
whether to use them or not.
T
ESTING
L3RDY
BY POLLING
L3DATA
The host must test status flag L3RDY to make sure
whether the SAA2500 L3 interface is ready to transfer data
item bytes. According to the general protocol, described in
Section “Data items”, the status is read by first writing the
SAA2500 ‘read status’ operational address, after which
the status byte can be transferred. To avoid these status
byte transfers (thus reducing the host's load), after writing
the SAA2500 ‘read status’ operational address, L3RDY is
continuously copied to signal L3DATA during the period in
which no L3 transfers (i.e. status byte readings) are
performed. Meanwhile, L3MODE must be kept HIGH (no
L3 operational addresses may be written). As a result,
L3RDY can be tested as shown in Table 37.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA2501 | Digital Audio Broadcast DAB decoder |
| SAA2501H | Digital Audio Broadcast DAB decoder |
| SAA2502 | ISO/MPEG Audio Source Decoder |
| SAA2502H | ISO/MPEG Audio Source Decoder |
| SAA2503 | MPEG2 audio decoder(MPEG2 音頻譯碼器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA2500HB-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video Processing/ENDEC for MPEG |
| SAA2501 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital Audio Broadcast DAB decoder |
| SAA2501H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital Audio Broadcast DAB decoder |
| SAA2501HB-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Digital Audio Decoder & Support |
| SAA2502 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:ISO/MPEG Audio Source Decoder |
發(fā)布緊急采購，3分鐘左右您將得到回復。