UGWC621RSMA133 Unigen Corp, UGWC621RSMA133 Datasheet - Page 45

• Manufacturer Part Number: UGWC621RSMA133
• Description: MODULE NEMO BLUETOOTH RADIO
• Manufacturer: Unigen Corp

Specifications of UGWC621RSMA133

• Frequency: 2.4GHz ~ 2.48GHz
• Data Rate - Maximum: 3Mbps
• Modulation Or Protocol: BlueCore Serial (BCSP)
• Applications: General Purpose
• Power - Output: 7dbm
• Sensitivity: -89dBm
• Voltage - Supply: 3.3V
• Current - Receiving: 40mA
• Current - Transmitting: 45mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

NEMO Bluetooth Radio Module
Solutions for a Real Time World
Datasheet
The BCSP stack is used on the host to send sync messages from the host to the NEMO module.
The Sync message packet is a reasonably good data set for the analysis to complete, though at
high baud rates several sync messages from the BCSP stack may need to be sent.
This AUTOBAUD mechanism must complete before any normal UART traffic is passed to or from
the host transport. For example, the BCSP Link Establishment messages described in CSR’s
BlueCore Serial Protocol document are neither transmitted or responded to until the UART’s baud
rate has been set by this mechanism.
The mechanism is designed to operate between 38.4 kbaud and 691.2 kbaud. However, testing
from CSR has only been concentrated on operation between 56 kbaud and 115.2 kbaud.
Implementers are therefore advised to choose a bootup baud rate within these ranges.
During cold boot, the CSR BlueCore device can operate where the systems clock frequency is
unknown. This causes BlueCore to run more slowly than normal. Consequently, the range of
acceptable baud rates is shifted down pro-rata. The radio is not operational until the external
system clock is defined in the PSKEY setting. This is due to the PLL not locking to a known
external clock frequency. Therefore, the system clock must be programmed upon boot-up via the
PSKEY_ANA_FREQ persistent store key in order for the radio to operate.
Operation with an unknown system clock implies dual-boot initialization of NEMO. The approach is
for the host to use a safe tested baud rate at the during cold boot (115.2 kbaud), then to set the
external clock frequency to 26MHz and the actual baud rate via PSKEYS then issue a “warm reset”
command to NEMO over the same UART interface.
For more details on AUTOBAUD rate of the CSR device, please refer to the “UART Baud Rate
Adaption (bcore-me-019Pd).pdf” document available from CSR directly.
Persistent Store Keys (PSKEYS)
Persistent Store Keys are configuration settings that are used to configure and initiate the CSR
BlueCore 6 device within NEMO. These PSKEYS are written using the BCCMD protocol to send
commands to the CSR BlueCore devices. PSKEY are written using BCCMD write commands that
are interpreted by the CSR device within NEMO.
PSKEYS configure the CSR chips behavior from its interfaces to radio performance. Data such as
Bluetooth address, product ID and country code is also stored in PSKEYS and are necessary
information in some cases. Programming these various PSKEYS are vital to initializing NEMO upon
cold boot. PSKEYS are address locations with specific values. The values are used for
configuration of different systems of the NEMO.
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