參數(shù)資料
型號(hào)： SAA2502
廠商： NXP Semiconductors N.V.
英文描述： ISO/MPEG Audio Source Decoder
中文描述： 的ISO / MPEG音頻信源解碼器
文件頁(yè)數(shù)： 28/64頁(yè)
文件大?。?/td> 318K
代理商： SAA2502
1997 Nov 17
28
Philips Semiconductors
Preliminary specification
ISO/MPEG Audio Source Decoder
SAA2502
7.6.3
M
ICROCONTROLLER INTERFACE
The microcontroller interface operates in one of two distinct modes of operation: L3 or I
2
C-bus. Mode setting is
determined at initialization. The interface uses 3 signals. The function of these signals in the two modes is indicated in
Table 19:
Typical advantages of the use of the L3 protocol are:
High speed protocol (normally the speed of the microcontroller will be the limiting factor)
The protocol may be implemented using microcontrollers featuring only standard I/O ports.
The implemented I
2
C-bus interface is of the 400 kbits/s, 7-bit address, EMC improved type. Typical advantages of the
use of the I
2
C-bus protocol are:
Standardized protocol which is implemented in hardware in many existing microcontrollers
Good robustness against external disturbances on interconnecting lines
May be applied in multi-master configurations.
The CDATA output driver is of the ‘open drain’ type in order to be compliant with the I
2
C-bus specification.
During a hard reset of the device, the microcontroller interface mode is determined. As a consequence, the interface
cannot be used while the RESET signal is asserted.
Table 19
Bus modes
7.6.4
I
NITIALIZATION
Mandatory actions that must be taken for correct microcontroller interface start-up at a hard reset (see Fig.18).
SIGNAL
L3 MODE
I
2
C-BUS MODE
DIRECTION
DESCRIPTION
CDATA
CCLK
CMODE
L3DATA
L3CLK
L3MODE
SDA
SCK
none
input/output
input
input
microcontroller interface serial data
microcontroller interface bit clock
microcontroller interface mode select
相關(guān)PDF資料
PDF描述
SAA2502H ISO/MPEG Audio Source Decoder
SAA2503 MPEG2 audio decoder(MPEG2 音頻譯碼器)
SAA2503HT MPEG2 audio decoder
SAA2505H-M1 Digital multi-channel audio IC DUET
SAA2505 Digital multi-channel audio IC DUET
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA2502H 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:ISO/MPEG Audio Source Decoder
SAA2503 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:MPEG2 audio decoder
SAA2503HT 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:MPEG2 audio decoder
SAA2505 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital multi-channel audio IC DUET
SAA2505H 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Digital multi-channel audio IC DUET
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