33663 datasheet(31/37 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

33663

FUNCTIONAL DEVICE OPERATION

OPERATIONAL MODES

Figure 25. Operational and Transitional Modes State

Table 7. Explanation of Operational and Transitional Modes State Diagram (each transceiver)

Operational/

Transitional

LIN1, LIN2

INH1

INH2

EN1

EN2

TXD1, TXD2

RXD1, RXD2

Sleep Mode

Recessive state, driver off with



725 k

 pull-up.

OFF

(low)

LOW

High-impedance. HIGH if

external pull-up to VDD.

Awake

Recessive state, driver off.



725 k

 pull-up active.

(high)

LOW

LOW.

If external pull-up, HIGH-to-LOW

transition reports wake-up.

Preparation

to Sleep

Mode

Recessive state, driver off with



725 k

 pull-up

(high)

LOW

High-impedance. HIGH if

external pull-up to VDD.

Normal Mode

Driver active. 30 k

 pull-up

active.



Normal Baud Rate for 33662L

and 33662S

Slow Baud Rate for 33662J

Fast Baud Rate (> 100 kbps) for

33662L, 33662S & 33662J

(high)

HIGH

LOW to drive LIN bus in dominant

HIGH to drive LIN bus in

recessive.

Report LIN bus state:



• Low LIN bus dominant



• High LIN bus recessive

X = Don’t care.

Power-Up

Awake

Sleep

Preparation

to Sleep

LIN1

Normal Baud Rate or

Slow Baud Rate

Fast Baud Rate

(10x)

EN1 HIGH TO LOW for t >tLWUE

EN1 LOW TO HIGH for t> tLWUE

EN1 LOW TO HIGH for t>tLWUE

Toggle Function

(4)

Toggle Function (4)

EN1 HIGH TO LOW for t >tLWUE

EN1 LOW TO HIGH for t >tLWUE

LIN MODULE 1

Sleep

Preparation to

Sleep

LIN2

Normal Baud Rate or

Slow Baud Rate

Fast Baud Rate

(10x)

EN2 LOW TO HIGH for t > tLWUE

EN2 HIGH TO LOW for t >tLWUE

Toggle Function

(4)

Toggle Function

(4)

EN2 HIGH TO LOW for t >tLWUE

EN2 LOW TO HIGH for t >tLWUE

LIN MODULE 2

Awake

LIN1 bus dominant pulse

for t>tWUF

(2)

WAKE1 pin state changes

for t>tWF

(3)

Internal WAKE1

(1)

State changes during tSD

LIN2 bus dominant pulse

for t>tWUF

(2)

WAKE2 pin state changes

for t>tWF

(3)

Internal WAKE2

(1)

State changes during tSD

VSUP > VPOR

Internal WAKE1 (1)

state doesn’t change

during tSD

Internal WAKE2 (1)

State doesn’t change

during tSD

(1):internal WAKE is the WAKE signal filtered by tWF (WAKE deglitcher)

(2)

:see figures 15 and 18

(3)

:see figures 14 and 17

(4)

:the Toogle Function is guaranteed at ambiant and hot temperature

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