Analog Devices ADSP-BF59x Blackfin, Hardware Reference Manual, Page: 211 / 772

ADSP-BF59x Blackfin Processor Hardware Reference 6-7
Dynamic Power Management
Dynamic Power Management Controller
The Dynamic Power Management Controller (DPMC) works in conjunc-
tion with the PLL, allowing the user to control the processor’s
performance characteristics and power dissipation dynamically. The
DPMC provides these features that allow the user to control performance
and power:
• Multiple operating modes – The processor works in four operating
modes, each with different performance characteristics and power
dissipation profiles. See
“Operating Modes” on page 6-7 .
• Peripheral clocks – Clocks to each peripheral are disabled automat-
ically when the peripheral is disabled.
• Voltage control – The V
DDINT
domain must be powered by an
external voltage regulator. For more information see “Voltage Reg-
ulation Interface” on page 17-9 .
Operating Modes
The processor works in four operating modes, each with unique perfor-
mance and power saving benefits.
Table 6-4 summarizes the operational
characteristics of each mode.
Table 6-4. Operational Characteristics
Operating
Mode Power
Savings PLL
Status Bypassed
CCLK SCLK Allowed DMA
Access
Full On None Enabled No Enabled Enabled L1
Active Medium
Enabled
1
1 PLL can also be disabled in this mode.
Yes Enabled Enabled L1
Sleep High Enabled No Disabled Enabled –
Deep Sleep Maximum Disabled – Disabled Disabled –