Pni RM3100 Sensor Suite Manual de usuario descargar pdf (Pagina 26)

PNI Sensor Corporation Doc 1017252 r03

RM3100 & RM2100 Sensor Suite User Manual Page 25 of 45

Table 4-2: SPI Timing Specifications

Symbol

Description

Min

Max

Units

SHZD

SSN LOW to data output

100

SSDV

SSN LOW to Command Byte

100

DBSH

Setup data before active edge

DASH

Hold data after active edge

DRDV

Clock falling edge to valid data

SSH

Final clock cycle falling edge to SSN HIGH

100

SHDZ

SSN HIGH to output data tri-state

100

SSW

SSN HIGH to LOW (time between transactions)

100

4.5 I

C Requirements

The MagI2C can operate as a slave device on an I

C bus. It is identified by a 7-bit slave

address. The higher 5 bits of the slave address are pre-defined in hardware and the same for

all MagI2C devices. PNI has registered these first 5 bits as 0b01000. The lower 2 bits of the

slave address are user-configurable, using pins 3 and 28. As such, 4 different slave addresses

are possible. For example, setting pin 3 HIGH and pin 28 LOW results in an address of

0b0100001.

The MagI2C’s I

C interface complies with NXP’s UM10204 specification and user manual,

revision 03. Standard, fast, fast plus, and high speed modes of the I

C protocol are

supported. Below is a link to this document.

http://www.nxp.com/documents/user_manual/UM10204.pdf

4.5.1 I

C Register Write

A generic Write transaction is given below.

START

MagI2C ADDRESS

ACK

MagI2C REG. ADDRESS (N)

ACK

DATA TO REGISTER (N)

ACK

DATA TO REGISTER (N+1)

ACK

STOP

From Host to MagI2C

------------ Data Transferred (n bytes + acknowledge) ------------

From MagI2C to Host

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 43 44

Comentarios a estos manuales

Sin comentarios

Pni RM3100 Sensor Suite Manual de usuario Pagina 26

Comentarios a estos manuales

Relacionado con productos y manuales para Sensores Pni RM3100 Sensor Suite