BLUENRG-1 datasheet(85/173 Pages) STMICROELECTRONICS

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BlueNRG-1

Functional details

DocID028866 Rev 1

85/173

Address

offset

Name

Reset

Description

0x24

DMAR

0x00000000

I2C DMA register. Refer to the detailed

description below.

0x28

BRCR

0x00000008

I2C baud-rate counter register. Refer to

the detailed description below.

0x2C

IMSCR

0x00000000

I2C interrupt mask set/clear register.

Refer to the detailed description below.

0x30

RISR

0x00000013

I2C raw interrupt status register. Refer to

the detailed description below.

0x34

MISR

0x00000000

I2C masked interrupt status register.

Refer to the detailed description below.

0x38

ICR

0x00000000

I2C interrupt clear register. Refer to the

detailed description below.

0x4C

THDDAT

0x00000014

I2C hold time data. Refer to the detailed

description below.

0x50

THDSTA_FST_STD

0x003F00E2

I2C hold time start condition F/S. Refer to

the detailed description below.

0x54

RESERVED

0x00000019

RESERVED

0x58

TSUSTA_FST_STD

0x001D00E2

I2C setup time start condition F/S. Refer

to the detailed description below.

Table 92: I2C - CR register description: address offset I2CX_BASE_ADDR+0x00

Bit

Field name

Reset

Description

0x0

I2C enable disable:

0: I2C disable.

1: I2C enable.

This bit when deasserted works as software Reset for I2C

peripheral.

2:1

0x0

Select the operating mode:

00b: Slave mode. The peripheral can only respond

(transmit/receive) when addressed by a master device

01b: Master mode. The peripheral works in a multi-master

system where itself cannot be addressed by another master

device. It can only initiate a new transfer as master device.

10b: Master/slave mode. The peripheral works in a multi-

master system where itself can be addressed by another

master device, besides to initiate a transfer as master

device.

SAM

0x0

Slave addressing mode. SAM defines the slave addressing

mode when the peripheral works in slave or master/slave

mode. The received address is compared with the content of

the register SCR.

0: 7-bit addressing mode.

1: 10-bit addressing mode.

BLUENRG-1 Datasheet(PDF) 85 Page - STMicroelectronics

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