STLBC01 datasheet(22/40 Pages) STMICROELECTRONICS

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Host controller interface (HCI)

STLBC01

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DocID022984 Rev 2

In addition to standard commands, a set of HCI proprietary commands for dealing with the

power modes and some parameters linked to RF performance are supported. The complete

list of supported proprietary HCI commands is available in

Section 7.

The STBLC01 supports the two different transport layers for HCI according to the level of

the SEL pin:

SEL = 0: UART interface as defined in [

2], volume 4, part A.

SEL = 1: SPI interface with proprietary flow control.

6.1

HCI UART transport layer

The STBLC01 contains a 2-pin UART compatible for communication protocol with 16450,

16550 and 16750 standards. The baud rate can be set by the host by sending the related

HCI command (refer to

Section 7). The default baud rate is 115.2 kbps.

6.1.1

UART interface

The UART interface is through the following pins:

•

UART_RX: UART receiver line

•

UART_TX: UART transmitting line

6.1.2

UART settings

The HCI UART transport layer uses the following settings for RS232:

•

Baud rate: configurable via HCI

•

The default baud rate is 115.2 kbps. The default value is only set by POR or the RST

•

Number of data bits: 8

•

Parity bit: no parity

•

Start bit: 1 start bit

•

Stop bit: 1 stop bit

•

Flow control: not used

Table 14. HCI event format

Byte #

Parameter

Size

Description

1Packet_ID

Packet ID: Packet Identifier

– For HCI Event Packet_ID = 0x04

Event_Code

Each event is assigned a one-byte event code to uniquely

identify different types of events. Range: 0x00 to 0xFF,

where 0xFF is reserved for Vendor specific events.

Parameter_Total_Le

ngth

Lengths of all the parameters contained in the given event

packet

Event_Parameter_0

Each event has a specific number of parameters associated

with it. These parameters and the size of each of the

parameters are defined for each event. Each parameter is

an integer number of octets in size.

...

Event_Parameter_N

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