TLK2208B Datasheet, PDF (6/40 Pages) Texas Instruments – 8-PORT GIGABIT ETHERNET TRANCSEIVER

TLK2208B
8ĆPORT GIGABIT ETHERNET TRANSCEIVER
SLLS578D − AUGUST 2003 − REVISED SEPTEMBER 2006
SIGNAL
TDDC8
LOCATION
A3
TDDC9
B3
TDFE[7:0]
B7, A7, B6,
A6, B5, A5,
B4, A4
TDFE8
A8
TDFE9
B8
TDHG[7:0]
B12, A12,
B11, A11,
B10, A10,
B9, A9
TYPE
LVCMOS
input
LVCMOS
input with
P/D
LVCMOS
input
LVCMOS
input
LVCMOS
input with
P/D
LVCMOS
input
DESCRIPTION
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.
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.
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.
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.
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.
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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