PCM1861 datasheet(45/115 Pages) TI

45 / 115 page

SDA

SCL

Start

condition

1–7

1–8

Stop

condition

Slave address

R/W

ACK

DATA

ACK

DATA

ACK

R/W: Read operation if 1;otherwise,write operation

ACK: Acknowledgement of a byte if 0

DATA: 8 bits (byte)

PCM1861, PCM1863, PCM1865

www.ti.com

SLAS831C – MARCH 2014 – REVISED AUGUST 2014

8.19.4 I2C Interface

The PCM186x software programmable devices support the I2C serial bus and the data transmission protocol for

standard and fast mode as a slave device. This protocol is explained in I2C specification 2.0.

In I2C mode, the control pins are changed as follows:

Table 19. I2C Pins and Functions

PIN NAME

PIN NUMBER

PROPERTY

DESCRIPTION

SDA

Input / Output

I2C Data

SCL

Input

I2C Clock

Input

I2C Address 1

8.19.4.1 Slave Address

Table 20. I2C Slave Address

MSB

LSB

R/W

The PCM186x software programmable devices have a 7-bit slave address. The first six bits (MSBs) of the slave

address are factory preset to 1001 01. The next bit of the address byte is the device select bit, which can be

user-defined by the AD pin. A maximum of two PCM186x devices can be connected on the same bus at one

time. Each device responds when it receives its own slave address.

8.19.4.2 Packet Protocol

A master device must control packet protocol, which consists of start condition, slave address, read/write bit,

data if write or acknowledge if read, and stop condition. The PCM186x software programmable devices support

only slave receivers and slave transmitters.

write operation

Transmitter

------------

Data Type

slave

R/W

ACK

DATA

ACK

DATA

ACK

address

read operation

Transmitter

------------

Data Type

slave

R/W

ACK

DATA

ACK

DATA

ACK

address

M: Master Device MMM S: Slave Device

St: Start Condition MMM Sp: Stop Conditiion

Figure 42. Basic I2C Framework

8.20 Interrupt Controller

The hardware controlled PCM1861 has the Energysense signal detect as the default output on the INT pin.

There are no other interrupt sources. The INT pin on the PCM1861 is also used to put the device into power-

down mode.

Submit Documentation Feedback

Product Folder Links: PCM1861 PCM1863 PCM1865

PCM1861 Datasheet(PDF) 45 Page - Texas Instruments

PCM1861 Datasheet(HTML) 45 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL