User's Manual
Table Of Contents
- General Description
- Benefits
- More Information
- Overview
- Pad Connection Interface
- Recommended Host PCB Layout
- Module Connections
- Connections and Optional External Components
- Bluetooth Baseband Core
- Microprocessor Unit
- Integrated Radio Transceiver
- Collaborative Coexistence
- Global Coexistence Interface
- Peripheral Transport Unit
- PCM Interface
- Clock Frequencies
- GPIO Port
- PWM
- Triac Control/PWM
- Serial Peripheral Interface
- Power Management Unit
- Electrical Characteristics
- RF Specifications
- Timing and AC Characteristics
- Environmental Specifications
- Regulatory Information
- Packaging
- Ordering Information
- Acronyms
- Document Conventions
- Document History Page
- Sales, Solutions, and Legal Information
Document Number: 002-19525 Rev. ** Page 16 of 49
PRELIMINARY
CYBT-343026-01
CYBT-343029-01
CYBT-143038-01
Microprocessor Unit
The microprocessor unit in CYBT-X430XX-01 runs software from the link control (LC) layer up to the host controller interface (HCI).
The microprocessor is based on the Cortex-M3 32-bit RISC processor with embedded ICE-RT debug and JTAG interface units. The
microprocessor also includes 848 KB of ROM memory for program storage and boot ROM, 352 KB of RAM for data scratch-pad, and
patch RAM code.
The internal boot ROM provides flexibility during power-on reset to enable the same device to be used in various configurations. At
power-up, the lower layer protocol stack is executed from the internal ROM.
External patches can be applied to the ROM-based firmware to provide flexibility for bug fixes and features additions. These patches
can be downloaded using external NVRAM. The device can also support the integration of user applications and profiles using an
external serial flash memory.
NVRAM Configuration Data and Storage
NVRAM contains configuration information about the customer application, including the following:
n Fractional-N information
n BD_ADDR
n UART baud rate
n SDP service record
n File system information used for code, code patches, or data. The CYBT-X430XX-01 can use SPI Flash or I2C EEPROM/serial
flash for NVRAM storage..
One-Time Programmable Memory
The microprocessor unit in CYBT-X430XX-01 includes 2 Kbytes of one-time programmable (OTP) memory allow manufacturing
customization and to avoid the need for an on-board NVRAM. If customization is not required, then the OTP does not need to be
programmed. Whether the OTP is programmed or not, to save power it is disabled when the boot process is complete. The OTP is
designed to store a minimal amount of information. Aside from OTP data, most user configuration information will be downloaded to
RAM after the CYBT-X430XX-01 boots and is ready for host transport communication.
The OTP contents are limited to:
n Parameters required prior to downloading the user configuration to RAM.
n Parameters unique to each part and each customer (for example, the Bluetooth device address and/or the software license key).