Datasheet

ADP5050 Data Sheet
Rev. 0 | Page 42 of 60
DETAILED REGISTER DESCRIPTIONS
This section describes the bit functions of each register used by
the ADP5050. To reset a register, the internal VDD power-on
reset signals must be low, unless otherwise noted.
REGISTER 1: PCTRL (CHANNEL ENABLE CONTROL),
ADDRESS 0x01
Register 1 is used to enable and disable the operation of each
channel. The on or off status of a channel is controlled by the
CHx_ON bit in this register and the external hardware enable
pin for the channel (logical AND). The default value of the
CHx_ON bit, 1, means that the channel enable is controlled by
the external hardware enable pin. The channel can be disabled
or enabled via the I
2
C interface only when the ENx pin is high.
Pulling the ENx pin low resets the corresponding CHx_ON bit
to the default value (1) to allow another valid startup when the
ENx pin is high again.
Table 19. Register 1 Bit Assignments
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reserved CH5_ON CH4_ON CH3_ON CH2_ON CH1_ON
Table 20. PCTRL Register, Bit Function Descriptions
Bits Bit Name Access Description
[7:5] Reserved R/W Reserved.
4 CH5_ON R/W 0 = disable Channel 5 (EN5 pin must be high).
1 = enable Channel 5 (default).
3 CH4_ON R/W 0 = disable Channel 4 (EN4 pin must be high).
1 = enable Channel 4 (default).
2 CH3_ON R/W 0 = disable Channel 3 (EN3 pin must be high).
1 = enable Channel 3 (default).
1 CH2_ON R/W 0 = disable Channel 2 (EN2 pin must be high).
1 = enable Channel 2 (default).
0 CH1_ON R/W 0 = disable Channel 1 (EN1 pin must be high).
1 = enable Channel 1 (default).
REGISTER 2: VID1 (VID SETTING FOR CHANNEL 1), ADDRESS 0x02
Register 2 is used to set the output voltage for Channel 1.
Table 21. Register 2 Bit Assignments
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reserved VID1[4:0]
Table 22. VID1 Register, Bit Function Descriptions
Bits Bit Name Access Description
[7:5]
Reserved
R/W
Reserved.
[4:0] VID1[4:0] R/W These bits set the output voltage for Channel 1. The default value is programmed by factory fuse.
00000 = 0.8 V (adjustable).
00001 = 0.85 V.
00010 = 0.875 V.
00011 = 0.9 V.
…
00111 = 1.0 V.
…
10011 = 1.3 V.
…
11011 = 1.5 V.
…
11110 = 1.575 V.
11111 = 1.6 V.