UM1868 datasheet(9/19 Pages) STMICROELECTRONICS

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UM1868

BlueNRG GUI IFR utility

DocID027570 Rev 1

9/19

Table 3: Configuration data

Field name

Description

Supported value

Stack mode

Indicates stack mode. This

value (if valid) overrides the

STACK default (0x02)

Mode 1: slave/master, one connection only,

small GATT database (RAM2 off during sleep)

Mode 2: slave/master, one connection only,

large GATT database (RAM2 on during sleep)

Mode 3: up to eight connections, master only

(BlueNRG), master/slave (BlueNRG-MS), small

GATT database (RAM2 on during sleep)

Day

Allows a date (day) to be

associated with a specific

BlueNRG IFR configuration

[1-31]

Month

Allows a date (month) to be

associated with a specific

BlueNRG IFR configuration

[1-12]

Year

Allows a date (year) to be

associated with a specific

BlueNRG IFR configuration

[0-99]

High-speed

startup time

Startup time for the high-

speed crystal

(time unit = 2.4414 µsec)

Ranges from 512 µs to 1953 µs. It can be

measured using the XTAL_startup_TEST

described in AN4494 “Bringing up the BlueNRG”

Slave SCA

Slave sleep clock accuracy,

depends on low-speed

oscillator

[10-1500] ppm

Master SCA

Master sleep clock accuracy,

depends on low-speed

oscillator

20, 30, 50, 75, 100, 150, 250, 500 ppm

Low-speed

crystal period

Low-speed crystal period

(read-only value defined in

BlueNRG GUI)

Low-speed

crystal frequency

Low-speed crystal frequency

(read-only value defined in

BlueNRG GUI)

If 0xFFFFFFFF autocalibration is enabled

Maximum

connection event

time

Maximum duration of a

connection event in the slave

(time unit = 2.4414 µsec)

(1)

[0-4] s

GPIO

configuration

Sets GPIOs in a given

configuration for special

functions

(1)

Disabled: GPIOs in high impedance

Active state on TEST1: high when device is

active because of SPI or radio activity

UID

Allows existing UID with

given 32-bit number to be

overwritten.

(1)

Free

Allows IFR free addresses

with user-defined values to

be configured

(1)

Notes:

(1)

Available by selecting "Advanced" button

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