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STPMIC25APQR Datasheet(PDF) 93 Page - STMicroelectronics

Part # STPMIC25APQR
Description  Highly integrated power management IC for microprocessor units
PDF  145 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STPMIC25APQR Datasheet(HTML) 93 Page - STMicroelectronics

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6.5.3
BUCKx ALTERNATE mode control register 1 (BUCKx_ALT_CR1) (x = 1 to 7)
Table 56. BUCKx_ALT_CR1
7
6
5
4
3
2
1
0
reserved
VOUT[6:0]
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
•
Address: 0x22/0x27/0x2C/0x31/0x36/0x3B/0x40
•
Default: 0b0XXXXXXX where X depends on the value programmed in NVM
•
Description: BUCK1 to BUCK7 ALT mode control register 1.
This register is initialized to the default value in the CHECK&LOAD state. The user can write to these registers to
set the voltage of BUCKx, which is applied to the ALTERNALTE mode (see Section 5.4.6 and 0 BUCKconverter).
[7]
reserved
[6:0]
VOUT[6:0]: Buck output voltage settings. See Table 20
The default value is the same as BUCKx_MAIN_CR1
6.5.4
BUCKx ALTERNATE mode control register 2 (BUCKx_ALT_CR2) (x = 1 to 7)
Table 57. BUCKx_ALT_CR2
7
6
5
4
3
2
1
0
reserved
reserved
reserved
reserved
reserved
PREG_MODE[1:0]
EN
R
R
R
R
R
R/W
R/W
R/W
•
Address: 0x23/0x28/0x2D/0x32/0x37/0x3C/0x41
•
Default: 0b00000XXX where X depends on the value programmed in NVM
•
Description: BUCK1 to BUCK7 ALTERNATE mode control register 2.
This register is initialized to the default value in the CHECK&LOAD state. The user can write to these registers to
control the enable and regulation modes of BUCKx, which are applied to the ALTERNATE mode (see
Section 5.4.6 and 0 BUCK converter).
[7:3]
reserved
[2:1]
PREG_MODE[1:0]: select regulation mode
00: BUCKx operates in high power mode (HP)
01: BUCKx operates in low power mode (LP)
10: BUCKx operates in forced PWM mode (CCM)
11: Reserved
[0]
EN:
0: BUCKx is disabled
1: BUCKx is enabled
The default value is the same as BUCKx_MAIN_CR2
STPMIC25
Register descriptions
DS14278 - Rev 3
page 93/145



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