CP3BT10G38 National Semiconductor, CP3BT10G38 Datasheet - Page 58
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CP3BT10G38
Manufacturer Part Number
CP3BT10G38
Description
IC CPU RISC W/LLC&USB 100-LQFP
Manufacturer
National Semiconductor
Datasheet
1.CP3BT10G38.pdf
(210 pages)
Specifications of CP3BT10G38
Applications
Connectivity Processor
Core Processor
CR16C
Program Memory Type
FLASH (256 kB)
Controller Series
CP3000
Ram Size
10K x 8
Interface
Bluetooth, ACCESS.bus, Audio, UART, USB, Microwire/SPI
Number Of I /o
37
Voltage - Supply
2.25 V ~ 2.75 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*CP3BT10G38
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Altogether, three mechanisms control whether the high-fre-
quency oscillator is active, and four mechanisms control
whether the PLL is active:
12.6
Table 27 lists the power management registers.
12.6.1
The Power Management Control/Status Register (PMMCR)
is a byte-wide, read/write register that controls the operating
power mode (Active, Power Save, Idle, or Halt) and enables
or disables the high-frequency oscillator and PLL in the
Power Save mode. At reset, the non-reserved bits of this
register are cleared. The format of the register is shown be-
low.
PSM
HCCH HCCM DHC DMC WBPSM HALT IDLE PSM
HCC Bits: The HCCM and HCCH bits in the PMMCR
register may be used to disable the high-frequency oscil-
lator and PLL, respectively, in Power Save mode when
the Bluetooth LLC is in Sleep mode.
Disable Bits: The DMC and DHC bits in the PMMCR
register may be used to disable the high-frequency oscil-
lator and PLL, respectively, in Power Save mode. These
bits must be set in Idle and Halt mode. When used to dis-
able the high-frequency oscillator or PLL, the DMC and
DHC bits override the HCC mechanism.
Power Management Mode: Halt mode disables the
high-frequency oscillator and PLL. Active Mode enables
them. The DMC and DHC bits and the HCC mechanism
have no effect in Active or Halt mode.
PLL Power Down Bit: The PLLPWD bit in the CRCTRL
register can be used to disable the PLL in all modes. This
bit does not affect the high-frequency oscillator.
7
PMMCR
PMMSR
Name
Table 27 Power Management Registers
POWER MANAGEMENT REGISTERS
Power Management Control Register (PMMCR)
6
If the Power Save Mode bit is clear and the
WBPSM bit is clear, writing 1 to the PSM bit
causes the device to start the switch to Power
Save mode. If the WBPSM bit is set when the
PSM bit is written with 1, entry into Power
Save mode is delayed until execution of a
WAIT instruction. The PSM bit becomes set
after the switch to Power Save mode is com-
plete. The PSM bit can be cleared by soft-
ware, and it can be cleared by hardware when
a hardware wake-up event is detected.
0
1
–
–
Device is not in Power Save mode.
Device is in Power Save mode.
5
FF FC60h
FF FC62h
Address
4
3
Power Management
Power Management
Control Register
Status Register
Description
2
1
0
58
IDLE
HALT
WBPSM
DMC
DHC
The Idle Mode bit indicates whether the de-
vice has entered Idle mode. The WBPSM bit
must be set to enter Idle mode. When the
IDLE bit is written with 1, the device enters
IDLE mode at the execution of the next WAIT
instruction. The IDLE bit can be set and
cleared by software. It is also cleared by the
hardware when a hardware wake-up event is
detected.
0
1
The Halt Mode bit indicates whether the de-
vice is in Halt mode. Before entering Halt
mode, the WBPSM bit must be set. When the
HALT bit is written with 1, the device enters
the Halt mode at the execution of the next
WAIT instruction. When in HALT mode, the
PMM stops the System Clock and then turns
off the PLL and the high-frequency oscillator.
The HALT bit can be set and cleared by soft-
ware. The Halt mode is exited by a hardware
wake-up event. When this signal is set high,
the oscillator is started. After the oscillator has
stabilized, the HALT bit is cleared by the hard-
ware.
0
1
When the Wait Before Power Save Mode bit is
clear, a switch from Active mode to Power
Save mode only requires setting the PSM bit.
When the WBPSM bit is set, a switch from Ac-
tive mode to Power Save, Idle, or Halt mode is
performed by setting the PSM, IDLE, or HALT
bit, respectively, and then executing a WAIT
instruction. Also, if the DMC or DHC bits are
set, the high-frequency oscillator and PLL
may be disabled only after a WAIT instruction
is executed and the Power Save, Idle, or Halt
mode is entered.
0
1
The Disable Main Clock bit may be used to
disable the high-frequency oscillator in Power
Save mode. In Active mode, the high-frequen-
cy oscillator is enabled without regard to the
DMC value. The DMC bit is cleared by hard-
ware when a hardware wake-up event is de-
tected. This bit must be set in Idle and Halt
modes.
0
1
The Disable High-Frequency (PLL) Clock bit
and may be used to disable the PLL in Power
Save modes. When the DHC bit is clear (and
PLLPWD = 0), the PLL is enabled in Power
Save mode. If the DHC bit is set, the PLL is
disabled in Power Save mode. The DHC bit is
cleared by hardware when a hardware wake-
–
–
–
–
–
–
–
–
Device is not in Idle mode.
Device is in Idle mode.
Device is not in Halt mode.
Device is in Halt mode.
Mode transitions may occur immediately.
Mode transitions are delayed until the
next WAIT instruction is executed.
High-frequency oscillator is not disabled
in Power Save mode, unless disabled by
the HCC mechanism.
High-frequency oscillator is disabled in
Power Save mode.
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