TLK2208B datasheet(6/40 Pages) TI | 8-PORT GIGABIT ETHERNET TRANCSEIVER

6 page

TLK2208B

8PORT GIGABIT ETHERNET TRANSCEIVER

SLLS578D − AUGUST 2003 − REVISED SEPTEMBER 2006

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DESCRIPTION

TYPE

LOCATION

SIGNAL

TDDC8

LVCMOS

input

Transmit data, K-generator channels C and D. In multiplexed channel mode, when CODE = low, this

terminal is the 9th bit of a 10-bit word to be transmitted. When CODE = high, this terminal acts as the

K-character indicator. When TDDC8 = high, the data on TDDC[7:0] is encoded into a K-character.

In nibble interface mode, when CODE = low, this terminal is the 4th and 9th bits of a 10-bit word to be

transmitted on channel D. When CODE = high, this terminal acts as the K-character indicator for

channel D.

In independent channel mode, the transmit clock that latches this input is TCLKD. In all other modes

the transmit clock is TCLKB.

TDDC9

LVCMOS

input with

P/D

Transmit data channels C and D. When CODE = low, this terminal is the 10th bit of a 10-bit word. When

CODE = high, this terminal should be left floating or tied low to ground.

In independent channel mode, the transmit clock that latches this input is TCLKD. In all other modes,

the transmit clock is TCLKB.

TDFE[7:0]

B7, A7, B6,

A6, B5, A5,

B4, A4

LVCMOS

input

Transmit data channels E and F. The parallel data is clocked into the transceiver on the rising and

falling edges of the transmit clock and transmitted as a serial stream with bit 0 sent as the first bit.

In independent channel mode, the transmit clock that latches this input is TCLKF. In all other modes,

the transmit clock is TCLKB.

In multiplexed channel mode, data for channel F is aligned to the rising edge of the transmit clock and

data for channel E is aligned to its falling edge.

In nibble interface mode, data is input least-significant nibble first, aligned to the falling edge of the

transmit clock, followed by the most-significant nibble aligned to the rising edge of the transmit clock.

Channel E data is input on TDFE[4:0] and channel F on TDFE[9:5]. When CODE = high, TDDC3 acts

as the K-character indicator for channel E.

TDFE8

LVCMOS

input

Transmit data, K-generator channels E and F. In multiplexed channel mode, when CODE = low, this

terminal is the 9th bit of a 10-bit word to be transmitted. When CODE = high, this terminal acts as the

K-character indicator. When TDFE8 = high, the data on TDFE[7:0] is encoded into a K-character.

In nibble interface mode, when CODE = low, this terminal is the 4th and 9th bits of a 10-bit word to be

transmitted on channel F. When CODE = high, this terminal acts as the K-character indicator for

channel F.

In independent channel mode, the transmit clock that latches this input is TCLKF. In all other modes

the transmit clock is TCLKB.

TDFE9

LVCMOS

input with

P/D

Transmit data channels E and F. When CODE = low, this terminal is the 10th bit of a 10-bit word. When

CODE = high, this terminal should be left floating or tied low to ground.

In independent channel mode, the transmit clock that latches this input is TCLKF. In all other modes,

the transmit clock is TCLKB.

TDHG[7:0]

B12, A12,

B11, A11,

B10, A10,

B9, A9

LVCMOS

input

Transmit data channels G and H. The parallel data is clocked into the transceiver on the rising and

falling edges of the transmit clock and transmitted as a serial stream with bit 0 sent as the first bit.

In independent channel mode, the transmit clock that latches this input is TCLKD. In all other modes,

the transmit clock is TCLKB.

In multiplexed channel mode, data for channel H is aligned to the rising edge of the transmit clock and

data for channel G is aligned to its falling edge.

In nibble interface mode, data is input least-significant nibble first, aligned to the falling edge of the

transmit clock, followed by the most-significant nibble aligned to the rising edge of the transmit clock.

Channel G data is input on TDHG[4:0] and channel F on TDHG[9:5]. When CODE = high, TDHG3

acts as the K-character indicator for channel G.

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