DM9161CI datasheet(8/47 Pages) DAVICOM

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DM9161CI

10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver

Final

Version: DM9161CIIII-DS-F01

February 22, 2012

RXCLK

/10BTSER

(U)

Receive Clock

The received clock provides the timing reference for the transfer of the

RXDV, RXD, and RXER. RXCLK is provided by PHY. The PHY may

recover the RXCLK reference from the received data or it may derive the

RXCLK reference from a nominal clock

25MHz in 100Mbps MII mode, 2.5MHz in 10Mbps MII mode, 10MHz in

10Mbps GPSI (7-Wired) mode

10BTSER only support for 10M mode; (power up reset latch input)

0 = GPSI (7-Wired) mode in 10M mode

1 = MII mode in 100M mode

CRS

/PHYAD[4]

(D)

Carrier Sense Detect/ PHYAD[4]

Asserted high to indicate the presence of carrier due to receive or

transmit activities in half-duplex mode of 10BASE-T or 100BASE-TX. In

repeater mode or full-duplex mode, this signal is asserted high to indicate

the presence of carrier due to receive activity only

This pin is also used as PHYAD [4] (power up reset latch input)

PHY address sensing input pin

COL

/RMII

(D)

Collision Detection

Asserted high to indicate the detection of the collision conditions in half-

duplex mode of 10Mbps and 100Mbps. In full-duplex mode, this signal is

always logical 0

Reduced MII enable:

This pin is also used to select Normal MII or Reduced MII. (power up

reset latch input)

0= Normal MII (default)

1= Reduced MII

This pin is always pulled low except used as reduced MII

RXDV

/TESTMODE

(D)

Receive Data Valid

Asserted high to indicate that the valid data is presented on the RXD [0:3]

Test mode control pin (power up reset latch input)

0 = normal operation (default)

1 = enable test mode

RXER/RXD[4]

/RPTR

(D)

Receive Data Error/The Fifth RXD Data Bit of the 5B Symbol

Asserted high to indicate that an invalid symbol has been detected

In decoder bypass mode (bypass BP4B5B), RXER becomes RXD [4], the

fifth RXD data bit of the 5B symbol

This pin is also used to select Repeater or Node mode. (power up reset

latch input)

0 = Node Mode (default)

1 = Repeater Mode

LEDMODE

I LED MODE Select

Reference LED function description

0: support Dual-LED

1: Normal LED

RESET#

Reset

Active low input that initializes the DM9161CI.

DM9161CI Datasheet(PDF) 8 Page - Davicom Semiconductor, Inc.

DM9161CI Datasheet(HTML) 8 Page - Davicom Semiconductor, Inc.

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