Datasheet

1. General description
The PCA9663 is an advanced single master mode I
2
C-bus controller. It is a fourth
generation bus controller designed for data intensive I
2
C-bus data transfers. It has three
independent I
2
C-bus channels with data rates up to 1 Mbits/s using the Fast-mode Plus
(Fm+) open-drain topology. Each channel has a generous 4352 byte data buffer which
makes the PCA9663 the ideal companion to any CPU that needs to transmit and receive
large amounts of serial data.
The PCA9663 is a 8-bit parallel-bus to I
2
C-bus protocol converter. Each channel can be
configured to communicate with up to 64 slaves in one serial sequence with no
intervention from the CPU. The controller also has a sequence loop control feature that
allows it to automatically retransmit a stored sequence.
Its onboard oscillator and PLL allow the controller to generate the clocks for the I
2
C-bus
and for the interval timer used in sequence looping. This feature greatly reduces CPU
overhead when data refresh is required in fault tolerant applications.
An external trigger input allows data synchronization with external everts. The trigger
signal controls the rate at which a stored sequence is re-transmitted over the I
2
C-bus.
Error reporting is handled at the transaction level, channel level and controller level with a
simple interrupt tree and interrupt masks allow further customization of interrupt
management.
The controller and parallel bus interfaces run at 3.3 V and the I
2
C-bus I/Os are 5 V
tolerant with logic levels referenced to a dedicated V
DD(IO)
input pin with a range of 3.0 V
to 5.5 V.
2. Features and benefits
Parallel-bus to I
2
C-bus protocol converter and interface
1 Mbit/s and up to 30 mA SCL/SDA I
OL
Fast-mode Plus (Fm+) capability
Internal oscillator trimmed to 1 % accuracy reduces external components
Individual 4352-byte buffers for the Fm+ channels for a total of 13056 bytes of buffer
space
Three levels of reset: individual software reset, global software reset, global hardware
RESET
pin
Communicates with up to 64 slaves on each channel in one serial sequence
Sequence looping with interval timer
Supports SCL clock stretching
JTAG port available for boundary scan testing during board manufacturing process
Trigger input synchronizes serial communication exactly with external events
PCA9663
Parallel bus to 3 channel Fm+ I
2
C-bus controller
Rev. 1 — 6 June 2011 Product data sheet

Summary of content (66 pages)