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AK8152 Datasheet, PDF (8/21 Pages) Asahi Kasei Microsystems – Single PLL Two Output Clock Generator | |||
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[AK8152]
MDIV1[7:0]
MDIV2[7:0]
ICLK
MDIV
PH
CP
LPF
CMP
PLL
VCO
DIV1[2:0]
CLKOUT1
DIV1
NDIV
NDIV1[7:0]
NDIV2[7:0]
DIV2[2:0]
CLKOUT2
DIV2
å³ 1 AK8152 å
é¨ãããã¯å³
ï¼ï¼ï¼ï¼ å
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ICLK 端åããå
¥åå¯è½ãªã¯ããã¯å¨æ³¢æ°ã¯ã12MHzã19.2MHzã26MHzã27MHzã48MHz ã®ï¼ã¤ã§ããã¬ã¸ã¹ã¿
MDIV1[n],MDIV2[n](n=0-7)ã§ãå
¥åããå¨æ³¢æ°ãä¸ã¤ãé¸æãã¾ããã¬ã¸ã¹ã¿ã¯è¡¨ 1 ãåç
§ãã¦è¨å®ãã¦ä¸ã
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ï¼ï¼ï¼ï¼ PLL
PLL ã§çæå¯è½ãªå¨æ³¢æ°ã¯ã108M, 100M, 96M, 90M, 81M, 80M, 78M, 76MHz ã® 8 å¨æ³¢æ°ã§ããåºåå¨æ³¢æ°ã®
è¨å®ã¯ãã¬ã¸ã¹ã¿ MDIV1[n], MDIV2[n], NDIV1[n], NDIV2[n] (n=0-7)ã§è¡ãã¾ããã¬ã¸ã¹ã¿ã¯è¡¨ 1 ãåç
§ãã¦è¨å®
ãã¦ä¸ããã
ï¼ï¼ï¼ï¼ åºååå¨å¨ DIV1,DIV2
PLL åºåã¾ã㯠ICLK 端åå
¥åãåºååå¨å¨ DIV1,DIV2 ã§åå¨ãããCLKOUTn (n=1,2)端åããåºåããã¾ãã
åå¨æ°ã¯ã2,4,6,8,10,12 ã® 6 ã¤ã§ããåå¨æ°ã®è¨å®ã¯ãã¬ã¸ã¹ã¿ DIV1[n]ãDIV2[n](n=0,1,2)ã§è¡ãã¾ããåºåå
å¨å¨ã®å
¥åä¿¡å·ã®é¸æã¯ã¬ã¸ã¹ã¿ DIVnINSEL(n=1,2)ã§è¡ãã¾ãã
ï¼ï¼ï¼ï¼ åºåã¯ããã¯å¨æ³¢æ°ã¨ã¬ã¸ã¹ã¿è¨å®
CLKOUTn 端åããåºåãããã¯ããã¯å¨æ³¢æ°ã¯ã以ä¸ã®é¢ä¿ã§æ±ãããã¾ãã
CLKOUTn 端å(n=1,2)ã®åºåå¨æ³¢æ° ï¼ PLL åºå ã¾ã㯠ICLK 端åå
¥å ï¼ DIV1,DIV2 ã®åå¨æ°
PLL åºåãåå¨ãã¦åºåããå ´åã®åºåå¨æ³¢æ°ã表 2 ã«ãICLK 端åå
¥åãåå¨ãã¦åºåããå ´åã®åºåå¨æ³¢
æ°ã表 3 ã«ã示ãã¾ããææã®åºåå¨æ³¢æ°ãå¾ãã«ã¯ã表 1 ãåç
§ãã¦ã¬ã¸ã¹ã¿ãè¨å®ãã¦ä¸ããã
draft-J-00b
-8-
2010/3
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