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DA6021 Datasheet(PDF) 103 Page - Renesas Technology Corp |
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DA6021 Datasheet(HTML) 103 Page - Renesas Technology Corp |
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103 / 225 page  DA6021 HIGHLY INTEGRATED POWER MANAGEMENT IC FOR INTEL® ATOM™ Z3000 PROCESSOR Company Confidential Data Sheet Version 3.A - Final 31-Jan-14 © 2014 Dialog Semiconductor GmbH 103 of 224 www.dialog-semiconductor.com V1P2SX_CTRL. SLP_S3_B V1P2SX V1P2SX_SEL V1P2SX_EN 1 0 1 Off 1 1 1 On x x 0 Off Table 62: V1P2SX Truth Table Power Rail VSYSU 11.6.7 VSYSU is the voltage rail that sources power of VSYS through an external power switch. This power domain is used to source communication and the modem. The external power switch is generated via a P-channel FET. DA6021 provides an enable signal VSYSU_EN_B supplied by VSYS, driving the gate of the external FET. DA6021 provides also a feedback input signal VSYSU_FB to control the slew rate and limit the inrush current Register Name VSYSU_CTRL Address 0x62 Page 1 Read/Write Reset Value 0x02 MSB LSB R R R R R R R/W R/W Reserved VSYSU _SEL VSYSU _EN VSYSU_EN 0 1 VSYSU off VSYSU on VSYSU_SEL 0 1 VSYSU controlled by SLP_S4_B according to sequencing VSYSU controlled by VSYSU_CTRL.VSYSU_EN bit Regardless of VSYSU_EN and VSYSU_SEL, VSYSU_EN_B is high when SLP_S4_B is asserted, means low VSYSU_CTRL. SLP_S4_B VSYSU_EN_B VSYSU_SEL VSYSU_EN 1 0 1 High 1 1 1 Low x x 0 High Table 63: VSYSU_EN_B Truth Table VSYSU external P-channel power switch parameters: Rdson (Vgs=3.7V) 15-35mohm Input capacitance, Ciss 750-2315pF Output capacitance, Coss 265-900pF Reverse transfer capacitance, Crss 240-800pF |
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