- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄36334 > 935242220557 (NXP SEMICONDUCTORS) SPECIALTY CONSUMER CIRCUIT, PQFP208 PDF資料下載
參數(shù)資料
| 型號： | 935242220557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP208 |
| 封裝： | PLASTIC, SOT-316, SQFP-208 |
| 文件頁數(shù)： | 75/148頁 |
| 文件大小： | 692K |
| 代理商： | 935242220557 |
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頁當(dāng)前第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頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁
1998 Apr 09
32
Philips Semiconductors
Product specication
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
7.2.6
STATUS INFORMATION OF THE PCI INTERFACE
Table 9 lists the status information that the PCI interface makes available to the user in addition to the interrupt sources
that are described later. This information is read only.
Table 9
Status bits of the DMA control
OFFSET
(HEX)
NAME
BIT
TYPE
DESCRIPTION
120
VDP1
31 to 0
R
logical video DMA pointer of FIFO 1
124
VDP2
31 to 0
R
logical video DMA pointer of FIFO 2l
128
VDP3
31 to 0
R
logical video DMA pointer of FIFO 3
12C
ADP1
31 to 0
R
logical audio DMA pointer of audio output FIFO A1_out
130
ADP2
31 to 0
R
logical audio DMA pointer of audio input FIFO A1_in
134
ADP3
31 to 0
R
logical audio DMA pointer of audio output FIFO A2_out
138
ADP4
31 to 0
R
logical audio DMA pointer of audio input FIFO A2_in
13C
DDP
31 to 0
R
logical DEBI DMA pointer
7.3
Main control
7.3.1
GENERAL
The SAA7146A has two Dwords of general control to
support quick enable/disable switching of any activity of
the SAA7146A via direct access by the CPU. These main
control Dwords are split in two parts. The upper parts have
16 bits of bit-mask to allow bit-selective write to the lower
part which contains single bit enable/disable control of
major interface functions of SAA7146A. If a certain bit
position is masked with a logic 1 in the mask word (upper
2 bytes) during a write access, then the corresponding bit
in the control word (lower 2 bytes) is changed according to
the contents of the transmitted data. By that the CPU can
easily switch on or off certain selected interfaces of the
SAA7146A without checking the actual ‘remaining’
programming (enabling) of the other parts.
The programming of registers for the 3 Video DMA
channels, both video processors (HPS, BRS) and for the
interfaces DEBI and I2C-bus is performed by an upload
method. This is done to guarantee coherent programming
data. During initiation of an upload operation from a
shadow RAM each of the UPLD bits [10 to 0] (see
Table 11) is assigned to a set of registers. If a logic 1 is
written into a UPLD bit all dedicated shadow RAM
registers containing changed data are uploaded into their
working registers immediately. During a read cycle the
UPLD bits give information on whether the shadow RAM
contains changed data not yet uploaded into the working
registers. The UPLD bits remain HIGH as long as the
contents of the shadow RAM represents the current
programming
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 935260698551 | SPECIALTY CONSUMER CIRCUIT, PQFP160 |
| 935260698557 | SPECIALTY CONSUMER CIRCUIT, PQFP160 |
| 935260699551 | SPECIALTY CONSUMER CIRCUIT, PQFP208 |
| 935260699557 | SPECIALTY CONSUMER CIRCUIT, PQFP208 |
| 935243450551 | COLOR SIGNAL ENCODER, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 935245650125 | 制造商:NXP Semiconductors 功能描述:Inverter 1-Element CMOS 5-Pin TSSOP T/R |
| 935248-90 | 制造商:JANCO 功能描述:935248-90 |
| 9-3525-012 | 制造商:KEYSTONE 功能描述:MODIFIED 3525,VERSION E |
| 935252-5 | 制造商:C-H 功能描述:935252-5 |
| 935257650112 | 制造商:NXP Semiconductors 功能描述:SUB ONLY ICSUBS TO 935257650112 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。