AMIS-52150 Datasheet, PDF (24/25 Pages) AMI SEMICONDUCTOR – Low-Power Transceiver with Clock and Data Recovery

AMIS-52150
Low-Power Transceiver with Clock and Data Recovery
9.11 Alternative Wake-Up Functions
Data Sheet
Figure 19: Wakeup Circuits
The AMIS-52150 will wake up from the low power mode upon a) reception of RF energy, b) an interrupt generated by the wake-up
timer, or c) an interrupt generated by the external controller. In this low power mode, the RF circuits, the crystal oscillator, and the
CLKOUT circuits are shut off, and only the RC oscillator and the wake-up divider circuitry are active. Once the AMIS-52150 receiver
detects RF energy and wakes up, the RX/TX pin is set “low” while the I²CDATA and I²CCLK pins can remain “high”. In addition, when
the wake-up timer wakes up the AMIS-52150 to in turn flag the external controller, the TX/RX and I²CDATA pins are set “low” while the
I²CCLK pin can remain “high”. The external controller can also signal the AMIS-52150 to wake up by setting both the I²CDATA and
I²CCLK lines low. These functions are shown in Table 30.
Table 30: Wakeup Truth Table
Wakeup Truth Table
Wakeup Source TX/RX
SNIFF
0
HK Cycle
0
External
1
I²CDATA
1
0
0
I²CCLK
1
1
0
CLKOUT
XTAL out
RC oscillator
Don’t care
Comments
Wake on RF energy detect
Wake due to HK timer timeout
Wake due to external controller
10.0 Ordering Information
Table 31: Ordering Information
Ordering Code
Device Number
19293-001-XTP (or -XTD) AMIS-52150
Package Type
20-pin SSOP
(209mil, shrink small
outline package)
Industry Application
Industrial, Automotive, other
Shipping Configuration
Tape & Reel (-XTP)
Tube/Tray (-XTD)
AMI Semiconductor – Apr. 07 – M-20535-006
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