DP83256 datasheet(45/144 Pages) NSC

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50 Registers (Continued)

53 INTERRUPT CONDITION REGISTER (ICR)

The Interrupt Condition Register records the occurrence of an internal error event the detection of Line State an unsuccessful

write by the Control Bus Interface the expiration of an internal counter or the assertion of one or more of the User Definable

Sense pins

The Interrupt Condition Register will assert the Interrupt pin (EINT) when one or more bits within the register are set to 1 and

the corresponding mask bits in the Interrupt Condition Mask Register (ICMR) are also set to 1

ACCESS RULES

ADDRESS

READ

WRITE

02h

Always

Conditional

UDI

RCB

RCA

LEMT

CWI

CCR

CPE

DPE

Bit

Symbol

Description

DPE

PHY

REQUEST

DATA PARITY ERROR

This bit will be set to 1 when

1 The PHY Request Data Parity Enable bit (PRDPE) of the Current Transmit State Register (CTSR) is set to 1 and

2 The Transmitter Block detects a parity error in the incoming PHY Request Data

The source of the data can be from the PHY Invalid Bus the Receive Bus the A

Bus or the B

Bus of the

Configuration Switch

Note

Parity is only checked on data that goes into the transmitter block This means that any data that is just routed through the configuration

switch without going into the transmit block is not checked

CPE

Control Bus DATA PARITY ERROR

This bit will be set to 1 when the Control Bus Interface detects a parity error

in the incoming Control Bus Data (CBDk70l) CBP during a write cycle

CCR

Control Bus WRITE COMMAND REJECT

This bit will be set to 1 when an attempt to write into one of the

following read-only registers is made

Current Receive State Register (Register 08 CRSR)

Current Noise Count Register (Register 0F CNCR)

Current Noise Prescale Count Register (Register 10 CNPCR)

Current State Count Register (Register 13 CSCR)

Current State Prescale Count Register (Register 14 CSPCR)

Current Link Error Count Register (Register 16 CLECR)

Device ID Register (Register 18 IDR)

Current Injection Count Register (Register 19 CIJCR)

Scrub Timer Value Register (Register 25 STVR)

DP83256 Datasheet(PDF) 45 Page - National Semiconductor (TI)

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