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W83176R-400 Datasheet(PDF) 7 Page - Winbond |
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W83176R-400 Datasheet(HTML) 7 Page - Winbond |
7 / 12 page W83176R-400/W83176G-400 CURRENT MODE DIFFERENTIAL BUFFER FOR PCI EXPRESS AND SATA - 4 - 6. I2C CONTROL AND STATUS REGISTERS 6.1 Register 0: Control Register (Default: 07h) BIT NAME PWD DESCRIPTION 7 PD_DM 0 PD# Drive mode, 0:driven, 1:Hi-Z 6 SRC_ST_DM 0 SRC_STOP Drive mode, 0:driven, 1:Hi-Z 5 SEL_SRCDIV 0 0:control by pin, 1:control by I2C 4 SEL_NORMAL 0 0:control by pin, 1:control by I2C 3 SEL_PLLBW 0 0:control by pin, 1:control by I2C 2 PLL_BW_ ADJ 1 0:High BW, 1:Low BW 1 NORMAL#/PLL 1 0:Normal buffer, 1:PLL mode 0 SRC_DIV# 1 0:Divided by 2 mode, 1:Normal (output=input) 6.2 Register 1: Control Register (Default: FFh) BIT NAME PWD DESCRIPTION 7 Reserved 1 Reserved 6 DIF6_EN 1 0:Disabled (Hi-Z), 1:Enable 5 DIF5_EN 1 0:Disabled (Hi-Z), 1:Enable 4 Reserved 1 Reserved 3 Reserved 1 Reserved 2 DIF2_EN 1 0:Disabled (Hi-Z), 1:Enable 1 DIF1_EN 1 0:Disabled (Hi-Z), 1:Enable 0 Reserved 1 Reserved 6.3 Register 2: Control Register (Default: 00h) BIT NAME PWD DESCRIPTION 7 Reserved 0 Reserved 6 DIF6STOP_EN 0 0:Free-run, 1:Stoppable 5 DIF5STOP_EN 0 0:Free-run, 1:Stoppable 4 Reserved 0 Reserved 3 Reserved 0 Reserved 2 DIF2STOP_EN 0 0:Free-run, 1:Stoppable 1 DIF1STOP_EN 0 0:Free-run, 1:Stoppable 0 Reserved 0 Reserved |
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