Rainbow Electronics MAX8982X - Manual (Page 64)

Power-Management ICs for
ICERA E400/E450 Platform
MAX8982A/MAX8982X
64
Table 51. On/Off Register (On/Off Control for BUCK3, BUCK4, and the Internal 32kHz Clock)
Table 52. BUCK3 Register (Output Voltage Setting for BUCK3)
Note: The BUCK3 and BUCK4 bits are not used by the MAX8982X.
Note: This register is not used by the MAX8982X.
ADDRESS
(HEX)
POR
(HEX)
R/W BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
70 03 R/W Reserved Reserved Reserved BUCK4[1:0] BUCK3[1:0] 32KCLK
BITS 7:5 Reserved, write 000 to these bits.
NAME
DESCRIPTION
BUCK4[1] BUCK4[0]
0 0 BUCK4 off (in I 2 C on mode).
0 1 BUCK4 on (in I 2 C on mode).
1 0 BUCK4 on (in PWR_REQ on mode) (Group B).
1 1 BUCK4 on (in PWR_REQ on mode) (Group B).
BUCK3[1] BUCK3[0] DESCRIPTION
0 0 BUCK3 OFF (in I 2 C on mode).
0 1 BUCK3 ON (in I 2 C on mode).
1 0 BUCK3 ON (in PWR_REQ on mode).
1 1 BUCK3 ON (in PWR_REQ on mode).
NAME POR DESCRIPTION
32KCLK 1
1: Turn on 32kHz.
0: Turn off 32kHz.
ADDRESS
(HEX)
POR
(HEX)
R/W BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
72 06 R/W Reserved Reserved Reserved Reserved SD3[3:0]
BITS 7:4 Reserved, write 0000 to these bits.
DESCRIPTION
BIT 3 BIT 2 BIT 1 BIT 0 V PROG (V)
0 0 0 0 2.90
0 0 0 1 2.95
0 0 1 0 3.00
0 0 1 1 3.05
0 1 0 0 3.10
0 1 0 1 3.15
0 1 1 0 3.20
0 1 1 1 3.25
1 0 0 0 3.30
1 0 0 1 3.35
1 0 1 0 3.40
1 0 1 1 3.45
1 1 0 0 3.50
1 1 0 1 3.55
1 1 1 0 3.60
1 1 1 1 3.65