MC33596FCESLASHR2 datasheet(32/70 Pages) FREESCALE

32 / 70 page

MC33596 Data Sheet, Rev. 4

Configuration Switching

Freescale Semiconductor

15.1.2.2 BANKA = 0, BANKB = 1

If strobe pin is 1, configuration is defined by Bank B, BANKS = 0.

If strobe pin is 0, MC33596 configuration is OFF.

If a message is received during State B, current state remains State B up to end of message.

15.1.2.3 BANKA = 1, BANK B = 1

If strobe pin is 1, configuration is defined by BANKS. BANKS is toggled at each falling edge of the strobe

pin.

If strobe pin is 0, MC33596 configuration is OFF.

If a message is received during state A or state B, current state remains the same up to end of message.

If a read or write access is done using SPI, the next sequence will begin with state A whatever was the

active state before SPI access by MCU.

15.1.3 Strobe Oscillator Switch Control

The conditions to enter strobe oscillator switch control are:

•

Strobe pin connected to an external capacitor to define timing (see Section 11.3, “Receiver

On/Off Control”)

•

Strobe pin can also be connected to the MCU I/O port

•

SOE bit = 1

By simply writing BANKA and BANKB, the active banks will be defined.

The MCU can override strobe oscillator control by controlling the strobe pin level. If MCU I/O port is in

high impedance, the strobe oscillator will control the OFF/ON state of the MC33596. The various

available sequences are described in the following subsections.

BANKA

BANKB

Bank A is active

Bank B is active

Bank A and Bank B are both active, configuration will toggle at each wakeup

OFF

Strobe Pin

State B

OFF

State B

Strobe Pin

Banks Bit

State A

OFF

State B

OFF

State A

MC33596FCE/R2 Datasheet(PDF) 32 Page - Freescale Semiconductor, Inc

MC33596FCE/R2 Datasheet(HTML) 32 Page - Freescale Semiconductor, Inc

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

Datasheet Download

Link URL