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AS3606 Datasheet(PDF) 53 Page - ams AG |
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AS3606 Datasheet(HTML) 53 Page - ams AG |
53 / 71 page ![]() www.austriamicrosystems.com Revision 1.03 52 - 70 AS3606 AS3607 2v2 Data Sheet - R e g i s t e r D e f i n i t i o n Table 41. BOOST_Cntr2 Register Name Base Default BOOST_Cntr2 2-wire serial 00h Offset: 1Bh-2 DCDC step-up Control Register 2 This is an extended register and needs to be enabled by writing 010b to Reg. 1Ch first. This register is reset at a VDD27-POR or XRES input. Bit Bit Name Default Access Bit Description 7:3 SU_IFB<4:0> 0 0000 R/W Defines the tuning current at pin FBSU. 0x00: 0µA 0x01: 1µA 0x02: 2µA ... 0x1F: 31µA 2 SU_CURRLIM 0 R/W Selects the DCDC step-up converter coil current limit 0: normal current limit 1: current limit increased by about 50% 1 SU_GAIN 0 R/W DCDC step-up converter feedback gain is selected automatically depending on current or voltage feedback mode. Setting this bit to “1” will choose the alternative feedback gain setting. 0 SU_FREQ 00 R/W Defines the DCDC step-up switching frequency 0: 1MHz 1: 500kHz Table 42. CURR1 Register Name Base Default CURR1 2-wire serial 00h Offset: 1Bh-3 Current Sink 1 Register This is an extended register and needs to be enabled by writing 011b to Reg. 1Ch first. This register is reset at a VDD27-POR or XRES input. Bit Bit Name Default Access Bit Description 7:0 ICURR1<7:0> 0x00 R/W Sets the current for current sink 1 in 255 steps with 140.626µA stepsize 0x00: Current sink 1 switched off 0x01: 0.15 mA 0x02: 0.30 mA 0x03: 0.45 mA .. 0xFE: 38,10 mA 0xFF: 38.25 mA |
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