Gibson MM516, Руководство пользователя

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MM516
User's Manual
10
Revision 1.4 7-8-2011
Hardware Description Manual
1.5 Firmware
The on-board BlueCore 5 chip made by CSR, is supplied with Bluetooth v2.1 + EDR compliant stack firmware,
which runs on the internal RISC microcontroller.
The BlueCore 5 chip software architecture allows Bluetooth processing and the application program to be shared
in different ways between the internal RISC microcontroller and an external host processor. The upper layers
of the Bluetooth stack (above HCI) can be run either on-chip or on the host processor.
2 Basic Operating Information
2.1 Power Supply
The MM516 is supplied from a single external regulated 3.3V supply voltage (VDD). This supply voltage must always be
present.
The BlueCore 5 chip contains an internal 1.8 V switch mode power supply which is enabled by connecting pin 31
(VREGEN_H) to VDD. The output of the regulator is on pin 34 (LX) and needs to be connected to pin 33 (1V8) with a low
pass filter comprised of a 22uH inductor (Taiyo Yuden LBR2518T220K or equivalent) between the pins and a 10uF, low ESR
ceramic capacitor on pin 33.
.
The 1.8V voltage may not be used for supplying other components in the host system.
2.2 Clocking
The MM516 module contains a24 MHz crystal from which the internal system clock for the BlueCore 5 chip is generated.