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參數(shù)資料
| 型號： | SAA2502H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | ISO/MPEG Audio Source Decoder |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP44 |
| 封裝： | PLASTIC, SOT-307, QFP-44 |
| 文件頁數(shù)： | 31/64頁 |
| 文件大?。?/td> | 318K |
| 代理商： | SAA2502H |
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1997 Nov 17
31
Philips Semiconductors
Preliminary specification
ISO/MPEG Audio Source Decoder
SAA2502
7.6.5.2
I
2
C-bus transfer protocol (see Fig.20)
The protocol enables reading of data and writing of settings. In this protocol, the host first issues a 7-bit wide ‘device
address’ on CDATA immediately after the generation of a START condition. All devices connected to the bus read this
address. Data transfers to or from the host are then carried out. All devices with a different device address must neglect
these data transfers until the next address is issued. Only the device with an address equal to the issued device address
performs the transfer.
Table 22
I
2
C-bus device address
Notes
1.
R/W determines the direction of the subsequent data transfer(s): logic 0 = write, data is sent to the SAA2502;
logic 0 = read, data is sent to the microcontroller.
For further description of the acknowledge bit ACK consult the I
2
C-bus specification.
2.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
R/W
(1)
0
0
1
1
1
0
1
ACK
(2)
Fig.20 I
2
C-bus transfer protocol.
(1) START condition.
(2) STOP condition.
(3) Transfer from microcontroller to SAA2502.
(4) Transfer from SAA2502 to microcontroller.
handbook, full pagewidth
MGE484
0
0
1
0
0
0
SAA2502 address
SAA2502 address
SAA2502 address
P
P
S
S
S
local register address
local register data to microcontroller
local register data to microcontroller
local register address
microcontroller data to local register
(2)
(1)
(1)
(1)
(2)
(4)
(4)
(4)
(4)
(4)
(4)
(3)
(3)
(2)
(3)
(3)
(3)
(3)
(3)
(4)
(4)
WRITE (block) data
0
0
1
0
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| SAA2505H | RES 4.99K OHM 1/16W 0.5% 0402SMD |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA2503 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG2 audio decoder |
| SAA2503HT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG2 audio decoder |
| SAA2505 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital multi-channel audio IC DUET |
| SAA2505H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital multi-channel audio IC DUET |
| SAA2505H-M1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital multi-channel audio IC DUET |
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