8XC552 datasheet(39/60 Pages) PHILIPS

39 / 60 page

Philips Semiconductors

80C51 Family Derivatives

8XC552/562 overview

1996 Aug 06

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

! STATE

: A0, A STOP condition or repeated START has been received,

while still addressed as SLV/REC or SLV/TRX.

! ACTION : No save of DATA, Enter NOT addressed SLV mode.

Recognition of own SLA. General call recognized, if S1ADR. 0–1.

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

.sect

srsA0

.base

0x1a0

01A0

75D8C5

mov

S1CON,#ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0

! clr SI, set AA

01A3

D0D0

pop

psw

01A5

reti

!********************************************************************************************************

! SLAVE TRANSMITTER STATE SERVICE ROUTINES

!********************************************************************************************************

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

! STATE

: A8, Own SLA+R received, ACK returned.

! ACTION : DATA will be transmitted, A bit received.

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

.sect

stsa8

.base

0x1a8

01A8

8548DA

mov

S1DAT,STD

! load DATA in S1DAT

01AB

75D8C5

mov

S1CON,#ENS1_NOTSTA_NOTSTO_NOTSI_AA_CR0

! clr SI, set AA

01AE

01E8

ajmp INITBASE2

.sect

ibase2

.base

0xe8

00E8

75D018

INITBASE2:

mov

psw,#SELRB3

00EB

7948

mov

r1, #STD

00ED

inc

00EE

D0D0

pop

psw

00F0

reti

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

! STATE

: B0, Arbitration lost in SLA and R/W as MST. Own SLA+R received, ACK returned.

! ACTION : DATA will be transmitted, A bit received.

STA is set to restart MST mode after the bus is free again.

!– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

.sect

stsb0

.base

0x1b0

01B0

8548DA

mov

S1DAT,STD

! load DATA in S1DAT

01B3

75D8E5

mov

S1CON,#ENS1_STA_NOTSTO_NOTSI_AA_CR0

01B6

01E8

ajmp INITBASE2

8XC552 Datasheet(PDF) 39 Page - NXP Semiconductors

8XC552 Datasheet(HTML) 39 Page - NXP Semiconductors

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