參數(shù)資料
型號(hào)： SAA7705H
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： Car radio Digital Signal Processor（DSP）(車載電臺(tái)數(shù)字信號(hào)處理器)
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP80
文件頁數(shù)： 35/60頁
文件大?。?/td> 1857K
代理商： SAA7705H
1999 Aug 16
35
Philips Semiconductors
Preliminary specification
Car radio Digital Signal Processor (DSP)
SAA7705H
12.1.4
D
ATA TRANSFER
A device generating a message is a ‘transmitter’, a device
receiving a message is the ‘receiver’. The device that
controlsthemessageisthe‘master’andthedeviceswhich
are controlled by the master are the ‘slaves’; see Fig.15.
12.1.5
A
CKNOWLEDGE
The number of data bits transferred between the START
andSTOP conditions from thetransmitter toreceiverisnot
limited. Each byte of eight bits is followed by one
acknowledge bit. At the acknowledge bit the data line is
released by the master and the master generates an extra
acknowledge related clock pulse. A slave receiver, which
is addressed, must generate an acknowledge after the
reception of each byte. Also a master must generate an
acknowledge after the reception of each byte that has
been clocked out of the slave transmitter. The device that
acknowledges has to pull down the SDA line during the
acknowledge clock pulse, so that the SDA line is stable
LOW during the HIGH period of the acknowledge related
clock pulse. Set-up and hold times must be taken into
account. A master receiver must signal an ‘end of data’ to
the transmitter by not generating an acknowledge on the
last byte that has been clocked out of the slave. In this
event the transmitter must leave the data line HIGH to
enable the master to generate a STOP condition;
see Fig.16.
Fig.15 Data transfer on the I
2
C-bus.
handbook, full pagewidth
MBH177
P
S
SDA
SCL
START
CONDITION
STOP
CONDITION
1
2
3 - 8
9
ACK
9
ACK
7
8
1
2
MSB
acknowledgement
signal from receiver
byte complete;
interrupt within receiver
clock line held low while
interrupts are serviced
acknowledgement
signal from receiver
Fig.16 Acknowledge on the I
2
C-bus.
MBH178
S
START
CONDITION
9
8
2
1
clock pulse for
acknowledgement
not acknowledge
acknowledge
DATA OUTPUT
BY TRANSMITTER
DATA OUTPUT
BY RECEIVER
SCL FROM
MASTER
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA7706H 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Car radio Digital Signal Processor (DSP)
SAA7706H/N107 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
SAA7706H/N107,518 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC DIRAC-1 RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
SAA7706H/N107,557 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC DIGITAL SIGNAL RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
SAA7706H/N107S,518 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC CAR RADIO DIGITAL SIGNAL PROCESSOR RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
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