Figure 1-37, Table 1-47 – Texas Instruments TMS3320C5515 User Manual
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System Configuration and Control
Figure 1-37. LDO Control Register (LDOCNTL) [7004h]
15
8
Reserved
R-0
7
2
1
0
Reserved
DSP_LDO_V
USB_LDO_EN
R-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 1-46. LDOCNTL Register Bit Descriptions Field Descriptions
Bit
Field
Value
Description
15-2
Reserved
0
Reserved. Read-only, writes have no effect.
1
DSP_LDO_V
DSP_LDO voltage select bit.
0
DSP_LDOO is regulated to 1.3 V.
1
DSP_LDOO is regulated to 1.05 V.
0
USB_LDO_EN
USB_LDO enable bit.
0
USB_LDO output is disabled. USB_LDOO pin is placed in high-impedance (Hi-Z) state.
1
USB_LDO output is enabled. USB_LDOO is regulated to 1.3 V.
Table 1-47. LDO Controls Matrix
RTCPMGT Register
LDOCNTL Register
(0x1930)
(0x7004)
DSP_LDO_EN
BG_PD Bit
LDO_PD Bit
USB_LDO_EN Bit
(Pin D12)
ANA_LDO
DSP_LDO
USB_LDO
1
Don't Care
Don't Care
Don't Care
OFF
OFF
OFF
Don't Care
1
Don't Care
Don't Care
OFF
OFF
OFF
0
0
0
Low
ON
ON
OFF
0
0
0
High
ON
OFF
OFF
0
0
1
Low
ON
ON
ON
65
SPRUFX5A – October 2010 – Revised November 2010
System Control
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