- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372115 > SAA7381 (NXP SEMICONDUCTORS) ATAPI CD-R block decoder PDF資料下載
參數(shù)資料
| 型號： | SAA7381 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | ATAPI CD-R block decoder |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| 文件頁數(shù)： | 15/108頁 |
| 文件大?。?/td> | 380K |
| 代理商： | SAA7381 |
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頁當(dāng)前第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頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁
1997 Aug 12
15
Philips Semiconductors
Objective specification
ATAPI CD-R block decoder
SAA7381
Table 8
RAM interface pins
Table 9
Basic engine interface
SYMBOL
DESCRIPTION
COMMENT
XDA0 to XDA11
XRAS
XCAS
XWR
XDD0 to XDD7
RAM address bits, multiplexed for DRAM
DRAM row address strobe
DRAM column address strobe
RAM write enable
RAM data bus
up to 16 Mbytes DRAM only supported
SYMBOL
DESCRIPTION
COMMENT
SYSSYNC
COMSYNC
COMIN
COMOUT
COMCLK
COMACK
basic engine synchronization input
basic engine synchronization input
receive data
transmit data
serial data clock for synchronous mode
command acknowledge/transmit flow
control
generate interrupts on rising and/or falling edges
generate interrupts on rising and/or falling edges
must be HIGH for synchronous mode to transmit next
data byte
7
FUNCTIONAL DESCRIPTION
The SAA7381 device consists of a number of main
functional units; a CD engine interface, a multimedia block,
a microcontroller interface, an error detection and
correction block, a host interface and a memory manager.
There are also several smaller blocks including a clock
control block and a UART for communication with the CD
engine. Each block is independently controlled by a
dedicated register set. These registers are memory
mapped to the sub-CPU to allow for faster access.
The external RAM can also be accessed directly from the
microcontroller to support scratchpad accesses and thus
eliminate the need for further memory devices in the
system.
7.1
Memory field description
The CD input function of the SAA7381 buffer manager
receives the main data stream in I
2
S-bus format from the
CD-DSP, performs sync detection and partitions the data
into blocks.
It then writes the blocks to the buffer memory and onboard
ERCO RAM. Any detected errors are then corrected and
over written into the buffer memory.
Memory is segmented and addressable by segment
pointers. The segment pointers consist of a block number,
offset pointer and byte number within the block. The data
within each segment is organised in the same manner
(see Table 10).
The arrangement of data within each segment in memory
differs from other Philips devices, because of the different
error correction processing possibilities within the
SAA7381.
Addresses 0 to 2355 are written to memory by the drive
processor when enabled.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7382GP | Error correction and host interface IC for CD-ROM ELM |
| SAA7382 | Error correction and host interface IC for CD-ROM ELM |
| SAA7390 | High performance Compact Disc-Recordable CD-R controller |
| SAA7390GP | High performance Compact Disc-Recordable CD-R controller |
| SAA7501WP | ARD/ZDF NR.3R1 DIGITAL DECODER|LDCC|68PIN|PLASTIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7382 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Error correction and host interface IC for CD-ROM ELM |
| SAA7382GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Error correction and host interface IC for CD-ROM ELM |
| SAA7384 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems |
| SAA7385 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Error correction and host interface IC for CD-ROM SEQUOIA |
| SAA7385GP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Error correction and host interface IC for CD-ROM SEQUOIA |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。