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LM3263TMX/NOPB Datasheet(PDF) 21 Page - Texas Instruments |
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LM3263TMX/NOPB Datasheet(HTML) 21 Page - Texas Instruments |
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21 / 40 page  LM3263 www.ti.com SNVS837A – JUNE 2013 – REVISED AUGUST 2013 PROGRAMMABLE REGISTERS Addr Register Contents 00h REGISTER _0 Bits Function Default Trigger* R/W Description 7 RSVD 0 N/A N/A Reserved Register 00h interacts with Register 03h. DC-DC converter mode and output voltage control bits 00h : Low-Power Mode 01h : Reserved 02h : Standby Mode 03h to 7Eh : Active Mode, Setting Output Voltage is 6:0 VSET[7:1] 00h Yes R/W enabled. Output voltage can be set 0.4V to 3.6V by 0Dh to 78h with 30 mV steps 7Fh : Forced-Bypass Mode VSET[7:1] (dec) = Desired VOUT / 0.03 (round up decimals), then converts a decimal number to hexadecimal. 01h SMPS_CFG Bits Function Default Trigger* R/W Description 7:6 RSVD 0 N/A N/A Reserved Switching mode select bit 5 MODE 0 Yes R/W 0: Forced PWM Mode (PWM only) 1: Auto-PFM Mode (PFM/PWM) Forced bypass bit 4 BYPS 0 Yes R/W 0: Auto-Bypass Mode 1: Forced-Bypass Mode 3:0 RSVD 0h N/A N/A Reserved 02h GPO_CTRL Bits Function Default Trigger* R/W Description GPO1 output control 7 GPO1_OUT 0 Yes R/W 0: Low state 1: High state GPO1 Mode Selection 6 GPO1_MODE 0 Yes R/W 0 : General Purpose Output disabled 1 : General Purpose output driven by GPO1_OUT. 5:0 RSVD 00h N/A N/A Reserved 03h VSET_CTRL Bits Function Default Trigger* R/W Description DC-DC converter mode and output voltage fine control bits 00h-01h : Low-Power Mode 02h-03h : Reserved 04h-05h : Standby Mode 06h to FDh : Active Mode, Setting Output Voltage is 7:0 VSET[7:0] 00h Yes R/W enabled. Output voltage can be set 0.4V to 3.6V by 1Bh to F0h with 15 mV steps FEh-FFh : Forced Bypass Mode. VSET[7:0] (dec) = Desired VOUT / 0.015 (round up decimals), then converts a decimal number to hexadecimal. 1Ah RFFE_STATUS Bits Function Default Trigger* R/W Description 7 Software Reset. A write to '1' will cause all registers SWRESET 0 No except for USID to be reset. Will always read back '0'. 6 Set if parity error detected in command frame. Cleared CMD_FRAME_PERR 0 No on read. Write will have no effect on this bit. 5 Error when transaction interrupted by new SSC. CMD_LENGTH_ERR 0 No Cleared on read. Write will have no effect on this bit. 4 RSVD 0 No Reserved Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 21 Product Folder Links: LM3263 |
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