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STMicroelectronics Electronic Components Datasheet

L9663 Datasheet

PSI5 Transceiver IC

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L9663 pdf
L9663
PSI5 Transceiver IC
Datasheet - production data
*$3*36
VFQFPN28
*$3*36
TQFP32
(Exposed pad down)
Features
2-channel PSI5 transceiver compatible with
rev. 1.3 and rev. 2.1
Manchester coded digital data transmission
High data transmission speed of 125 kbps
(optional 83.3 kbps and 189 kbps)
High EMC robustness and low emission
Bootstrap circuits for sync pulses
Current limitation and voltage clamp on
interface pins
Integrated charge pump stage for pre-
regulation with spread spectrum approach
Integrated FLL module for high accuracy timing
control
Reverse voltage protection structure
Short to ground tolerant with ±1.5 V ground
shift
32-bit SPI interface with address multiplexing
Operating voltage: VB = 4.8 V (5.2 V for sync
pulses with 3.5 V step) to 35 V
Ambient temperature range: -40°C to 140 °C
Package: VFQFPN28 or TQFP32EP
Description
The Peripheral Sensor Interface (PSI5) is an
interface for automotive sensor applications. PSI5
is an open standard based on existing sensor
interfaces for peripheral sensors and offers a
universal and flexible solution for multiple sensor
applications.
The PSI5 interface allows asynchronous or
synchronous operations and different bus modes.
The device is compatible with both v1.3 and v2.1
PSI5 revisions (limitations are specified inside this
document). It operates with a wide range of
sensor supply current and variable data word
length (8 to 28 bit).
The sensors are connected to the ECU using the
same line for power supply and data
transmission. The transceiver IC provides a pre-
regulated voltage to the sensors and reads in the
transmitted sensor data.
The PSI5 interface allows either point to point
connection or bussed mode.
Order code
L9663
L9663-TR
L9663-1
L9663-TR-1
Table 1. Device summary
Package
TQFP32 (Exposed pad)
VFQFPN28
Packing
Tray
Tape & Reel
Tray
Tape & Reel
January 2016
This is information on a product in full production.
DocID028693 Rev 1
1/104
www.st.com


STMicroelectronics Electronic Components Datasheet

L9663 Datasheet

PSI5 Transceiver IC

No Preview Available !

L9663 pdf
Contents
Contents
L9663
1 Overall description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 Simplified block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Main functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 VQFPN28 pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4 TQFP32 pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.5 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.6 Detailed block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.7 Power up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.1 Internal supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.2 VAS supply and pre-regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.3 Voltage supply for synchronous pulse generation VSYNCx . . . . . . . . . . . . . . . . 19
2.4 Power supply for PSI5 sensor line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.5 Frequency references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2.6 Reset handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3 Satellite interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.1 Receiver with digital sampling and filtering . . . . . . . . . . . . . . . . . . . . . . . 25
3.2 Manchester decoder and error detection . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.3 Receive block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.3.1 PSI5 receive register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3.2 Sensor data buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.3.3 Interrupt generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.3.4 Automatic storage of sensor initialization data . . . . . . . . . . . . . . . . . . . . 33
3.4 Upstream data buffer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.5 Trigger pulse generator for synchronous pulses . . . . . . . . . . . . . . . . . . . 36
3.6 Synchronous pulse generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.7 Safety concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.7.1 Voltage monitoring check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.7.2 Sensor data consistency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.7.3 Buffer empty check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2/104
DocID028693 Rev 1


Part Number L9663
Description PSI5 Transceiver IC
Maker STMicroelectronics
Total Page 30 Pages
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