Zilog Z16C30 Manuel d'utilisateur télécharger pdf (Page 183)

8-28

Z16C30 USC

USER'S MANUAL

ZILOG

UM97USC0100

"RxFIFO Status" if last RCSR15-12 command 4-7 was 5

"Rx Int level" if last RCSR15-12 command 4-7 was 6

"RxREQ level" if last RCSR15-12 command 4-7 was 7

Receive Interrupt Control Register (RICR) Register Address 0 b 10011

Exited

Hunt IA

Bit(s)

Field/Bit

Name

Conditions

/Context

Description

Status

Ref Chapter: Section

RICR15-8

14 13 12 11 10 9 8 7 6 5 4 3 2 1 015

Idle

Rcved

Break/

Abort

Bound

Word

Status

Abort

/PE

RxOver

TC0R

Sel

5 written to

RCmd

(RCSR15

-12) or

Reset since

6 or 7

written to

RCmd

the number of characters/bytes/octets

currently in the RxFIFO

RW 5: The Data Registers and

the FIFOs

RICR15-8 RO

RICR15-8

number of characters/bytes/octets in the

RxFIFO, above which to request a Receive

Data interrupt

7: Receive Data interrupts6 written to

RCmd

(RCSR15-

12) since

5 or 7

written to

RCmd

RICR7 1=arm interrupts on ExitedHunt (RCSR7) RW 7: Receive Status Interrupt

Sources and IA Bits

ExitedHunt

RICR6 1=arm interrupts on IdleRcved (RCSR6) RWIdleRcvedIA

RICR5 1=arm interrupts on Break/Abort (RCSR5) RWBreak/Abort

RICR4 1=arm interrupts on RxBound (RCSR4) RWRxBound IA

RICR3 0="queued" status in RCSR reflects oldest

character in RxFIFO; 1=two oldest characters

RWWordStatus 5: Status Reporting

RICR2 1=arm interrupts on Abort/PE (RCSR2) RWAbort/PE IA 7: Receive Status Interrupt

Sources & IA Bits

RICR1 1=arm interrupts on RxOver (RCSR1) RWRxOver IA

RICR0 0=select Time Constant value for reading TC0R;

1=capture current count for reading TC0R

RWTC0R Sel 4: Tx and Rx Clocking: The

Baud Rate Generators

7 written to

RCmd

(RCSR15-

12) since

5 or 6

written to

RCmd

number of characters/bytes/octets in the

RxFIFO, above which to request a Receive

DMA transfer

6: DMA Requests by the

Receiver and Transmitter

RW = Read/Write, RO = Read Only, WO = Write Only – for other codes see p. 8-10.

UM009402-0201

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Zilog Z16C30 Manuel d'utilisateur Page 183

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