HD6417618 datasheet(275/646 Pages) RENESAS

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Section 11 Ethernet Controller (EtherC)

Rev. 6.00 Jun. 12, 2007 Page 243 of 610

REJ09B0131-0600

11.3.13

CRC Error Frame Counter Register (CEFCR)

CEFCR is a 32-bit counter that indicates the number of times a frame with a CRC error was

received. When the value in this register reaches H'FFFFFFFF, the count is halted. The counter

value is cleared to 0 by a write to this register with any value.

Bit

Bit Name

Initial

Value

R/W

Description

31 to 0 CEFC31 to

CEFC0

All 0

R/W

CRC Error Frame Count

These bits indicate the count of CRC error frames

received.

11.3.14

Frame Receive Error Counter Register (FRECR)

FRECR is a 32-bit counter that indicates the number of frames input from the PHY for which a

receive error was indicated by the RX-ER pin. FRECR is incremented each time the RX-ER pin

becomes active. When the value in this register reaches H'FFFFFFFF, the count is halted. The

counter value is cleared to 0 by a write to this register with any value.

Bit

Bit Name

Initial

Value

R/W

Description

31 to 0 FREC31 to

FREC0

All 0

R/W

Frame Receive Error Count

These bits indicate the count of errors during frame

reception.

11.3.15

Too-Short Frame Receive Counter Register (TSFRCR)

TSFRCR is a 32-bit counter that indicates the number of frames of fewer than 64 bytes that have

been received. When the value in this register reaches H'FFFFFFFF, the count is halted. The

counter value is cleared to 0 by a write to this register with any value.

Bit

Bit Name

Initial

Value

R/W

Description

31 to 0 TSFC31 to

TSFC0

All 0

R/W

Too-Short Frame Receive Count

These bits indicate the count of frames received with

a length of less than 64 bytes.

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