ml70512 Oki Semiconductor, ml70512 Datasheet - Page 23

• Manufacturer Part Number: ml70512
• Description: Bluetooth Baseband Controller Ic
• Manufacturer: Oki Semiconductor

APPLICATION NOTES
Clock Selection
Setting the Reset
Setting the UART Baud Rate
Setting the PCM-CVSD Transcoder
OKI Semiconductor
• Apply “L” level to the RESET pin for more than 10 s after power voltage is stabilized. When the system
• It is possible to set the UART baud rate using the Vendor Specific Commands.
• The system clock frequency is selected according to external pin SFRQSEL.
• The CPU clock supply source is selected according to external pin SCLKSEL.
• The frequency of CPU clock is selectable from the high speed (24 MHz) and low speed (16 MHz). This
• It is possible to set the PCM-CVSD transcoders using the Vendor Specific Commands.
SCLKSEL = 1
Note: The clock supply source can be set by the CLKCNTL register in the CTL/WDT block once the LSI
SFRQSEL = 00
SFRQSEL = 01
SFRQSEL = 10
A 12 MHz clock is input to external pin SCLKP regardless of SFRQSEL when BCM2002X is selected
SCLKSEL = 0
clock oscillator circuit is stable and the RESET pin is at “H” level, the internal reset is released and
operation starts after the internal reset is held for 1.9 ms for the input clock of 13 MHz, 2.0 ms for the input
clock of 12 MHz, or 1.5 ms for the input clock of 16 MHz.
Moreover, after power voltage is stable, the values of SCLKSEL, SFRQSEL0-1, and RFSEL0-2 should
Available baud rate settings:
9600/19.2k/38.4k/56k/57.6k/115.2k/230.4k/345.6k/460.8k/921.6k
(Initial value is 115.2 kbps.)
For command details, contact Oki Electric Industry Co., Ltd.
(RFSEL = 101).
be determined before the RESET pin is at “H” level.
can be performed by the Vendor Specific Command.
is powered up.
: Use the clock that was divided down from the internal PLL output of 192 MHz that
: Use external pins XC32KP.
was generated from external pins SCLKP. (Dividing ratios are selectable in the range
of 1/6 to 1/16. Initial value is 1/8 (24 MHz).)
:
:
:
A 13 MHz clock is input to external pin SCLKP.
A 12 MHz clock is input to external pin SCLKP.
A 16 MHz clock is input to external pin SCLKP.
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ML70512
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