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Download A20 User Manual V1.20 - linux
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15:0 / 1.5.4.36. / PLL2(4X) 10: PLL2(2X) 11: PLL2(1X) /. AC97 CLOCK(DEFAULT: 0X00030000) Offset: 0xBC Bit 01: Read/ Write Register Name: AC97_CLK_REG Default/Hex Description SCLK_GATING. 31 R/W Gating Special Clock(Max Clock = 200MHz) 0x0 0: Clock is OFF 1: Clock is ON 30:18 / / / CLK_SRC_SEL. 17:16 15:0 R/W / 1.5.4.37. 0x3 / PLL2 (8x) 01: PLL2(4X) 10: PLL2(2X) 11: PLL2(1X) /. KEYPAD CLOCK(DEFAULT: 0X0000001F) Offset: 0xC4 Bit 00: Read/ Write Register Name: KEYPAD_CLK_REG Default/Hex Description SCLK_GATING. Gating Special Clock(Max Clock = 100MHz) 31 R/W 0x0 0: Clock is OFF 1: Clock is ON This special clock = Clock Source/Divider N/Divider M. 30:26 / / / CLK_SRC_SEL. 25:24 R/W 0x0 Clock Source Select 0: OSC24M A20 User Manual (Revision 1.2) Copyright © 2013 Allwinner Technology Co., Ltd. All Rights Reserved. Page 69 / 812
