TLK111_14 Datasheet, PDF (6/110 Pages) Texas Instruments – PHYTER® Industrial Temperature 10/100Mbs Ethernet Physical Layer Transceiver

TLK111
SLLSEF8B – AUGUST 2013 – REVISED JANUARY 2014
www.ti.com
2.4 10Mbs and 100Mbs PMD Interface
PIN
NAME
NO.
TD–, TD+ 16, 17
RD–, RD+ 13, 14
TYPE
I/O
I/O
DESCRIPTION
Differential common driver transmit output (PMD Output Pair): These differential outputs are
automatically configured to either 10Base-T or 100Base-TX signaling.
In Auto-MDIX mode of operation, this pair can be used as the Receive Input pair. These pins require 3.3V
bias for operation.
Differential receive input (PMD Input Pair): These differential inputs are automatically configured to
accept either 100Base-TX or 10Base-T signaling.
In Auto-MDIX mode of operation, this pair can be used as the Transmit Output pair. These pins require
3.3V bias for operation.
2.5 Clock Interface
PIN
NAME
NO.
XI
34
XO
33
CLKOUT 25
TYPE
DESCRIPTION
CRYSTAL/OSCILLATOR INPUT:
MII reference clock: Reference clock. 25MHz ±50ppm-tolerance crystal reference or oscillator input. The
I
device supports either an external crystal resonator connected across pins XI and XO, or an external
CMOS-level oscillator source connected to pin XI only.
RMII reference clock: Primary clock reference input for the RMII mode. The input must be connected to a
50MHz ±50ppm-tolerance CMOS-level oscillator source.
O
CRYSTAL OUTPUT: Reference Clock output. XO pin is used for crystal only. This pin should be left floating
when an oscillator input is connected to XI.
CLOCK OUTPUT: In MII mode, this pin provides a 25 MHz clock output to the system. In RMII mode, this
O pin provides a 50MHz clock output. This feature allows other devices to use the reference clock from the
TLK111 without requiring additional clock sources.
2.6 LED Interface
(See Table 3-3 for LED Mode Selection)
PIN
NAME
LED_LINK /
AN_0
LED_SPEED /
SD_IN / AN_1
LED_ACT /
AN_EN
TYPE
NO.
DESCRIPTION
LED Pin to indicate status
Mode 1
LINK Indication LED: Indicates the status of the link. When the link is good, the LED
28 S, O, PU
is ON.
Mode 2 and ACT indication LED: Indicates transmit and receive activity in addition to the status
Mode 3
of the Link. The LED is ON when Link is good. The LED blinks when the transmitter
or receiver is active.
27
S, O, PU
LED Pin to indicate the speed of the link. SPEED Indication LED indicates whether the link is
100Mb/s or 10Mb/s. The LED is ON when the link speed is 100Mbs and OFF when it is 10Mbs.
LED Pin to indicate status.
Mode 1
26 S, O, PU
Mode 2
ACT indication LED: Indicates if there is any activity on the link. The LED is ON
(pulse) when activity is present on either Transmit or Receive channel.
COL indication LED: Indicates collision detection.
Mode 3
may be programmed to DUPLEX Indication LED and indicates Full-duplex status.
2.7 JTAG Interface
PIN
NAME
JTAG_TCK
JTAG_TDI
JTAG_TDO
TYPE
NO.
DESCRIPTION
8
I, PU JTAG Test Clock: This pin has a weak internal pullup.
12
I, PU JTAG Test Data Input: This pin has a weak internal pullup.
9
O JTAG Test Data Output
6
Pin Descriptions
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