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MAS3549F 参数 Datasheet PDF下载

MAS3549F图片预览
型号: MAS3549F
PDF下载: 下载PDF文件 查看货源
内容描述: MAS 35x9F MPEG 2/3层, AAC音频解码器, G.729附录编解码器 [MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec]
分类和应用: 解码器编解码器
文件页数/大小: 92 页 / 1187 K
品牌: MICRONAS [ MICRONAS ]
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MAS 35x9F  
DATA SHEET  
4.6.2.8. PIO as Parallel Output Interface  
Table 4–12: PIO output mode timing  
Some downloadable software may use the PIO inter-  
face (lines PI19...PI12) as output. The data transfer  
rate and conditions are defines by the software func-  
tion.  
Symbol Pin  
Min.  
RTW, PCS 0.010  
PCS 0.330  
PCS, RTW 0.010  
Max.  
Unit  
µs  
t
t
t
t
t
t
1800  
0
1
2
3
4
5
µs  
Handshaking for PIO output mode is accomplished  
through the RTW, PCS, and PI12..PI19 signal lines  
(see Fig. 4–30). The PR line has to be set to high level.  
µs  
RTW  
PI  
0.330  
0.330  
0.081  
10000  
µs  
RTW will go low as soon as a byte is available in the  
output buffer and will stay low until a byte has been  
read. Reading of a byte is performed with a PCS  
pulse. Data is latched out from the MAS on the falling  
edge of PCS and removed from the bus on the rising  
edge of PCS.  
µs  
PI  
µs  
t
t
t
t
0
1
2
3
RTW  
PIxx  
PCS  
t
t
4
5
Fig. 4–30: Output timing  
80  
June 30, 2004; 6251-505-1DS  
Micronas  
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