DP83255AVF datasheet(52/96 Pages) NSC

52 / 96 page

50 Registers (Continued)

CURRENT TRANSMIT STATE COMPARISON REGISTER (CTSCR)

The Current Transmit State Comparison Register ensures that the Control Bus must first read a bit modified by the PLAYER

device before it can be written to by the Control Bus Interface

The current state of the Current Transmit State Register (CTSR) is automatically written into the Current Transmit State

Comparison Register A (ie CTSCR e CTSR) during a Control Bus Interface read-cycle of CTSR

During a Control Bus Interface write-cycle the PLAYER device will set the Conditional Write Inhibit bit (CWI) of the Interrupt

Condition Register (ICR) to 1 and disallow the setting or clearing of a bit within the CTSR when the value of a bit in the CTSR

differs from the value of the corresponding bit in the Current Transmit State Comparison Register

ACCESS RULES

ADDRESS

READ

WRITE

1Bh

Always

RESC

PRDPEC

SEC

IC1C

IC0C

TM2C

TM1C

TM0C

Bit

Symbol

Description

TM0C

TRANSMIT MODE k0l COMPARISON

The comparison bit for the

Transmit Mode k0l (TM0) of the Current Transmit State Register (CTSR)

TM1C

TRANSMIT MODE k1l COMPARISON

The comparison bit for the

Transmit Mode k1l bit (TM1) of the Current Transmit State Register

(CTSR)

TM2C

TRANSMIT MODE k2l COMPARISON

The comparison bit for the

Transmit Mode k2l bit (TM2) of the Current Transmit State Register

(CTSR)

IC0C

INJECTION CONTROL k0l COMPARISON

The comparison bit for the

Injection Control k0l bit (IC0) of the Current Transmit State Register

(CTSR)

IC1C

INJECTION CONTROL k1l COMPARISON

The comparison bit for the

Injection Control k1l bit (IC1) of the Current Transmit Register (CTSR)

SEC

SMOOTHER ENABLE COMPARISON

The comparison bit for the Smoother

Enable bit (SE) to the Current Transmit State Register (CTSR)

PRDPEC

PHY

REQUEST DATA PARITY ENABLE COMPARISON

The comparison

bit for the PHY

Request Data Parity Enable bit (PRDPE) of the Current

Transmit State Register (CTSR)

RESC

RESERVED COMPARISON

The comparison bit for the Reserved bit (RES)

of the Current Transmit State Register (CTSR)

DP83255AVF 데이터시트(PDF) 52 Page - National Semiconductor (TI)

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