Datasheet

Table Of Contents
TLK100
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SLLS931BAUGUST 2009REVISED DECEMBER 2009
2 Pin Descriptions
The TLK100 pins are classified into the following interface categories (each interface is described in the
sections that follow):
Serial Management Interface
MAC Data Interface
Clock Interface
LED Interface
JTAG Interface
Reset and Power Down
Configuration (Jumper) Options
10/100 Mb/s PMD Interface
Special Connect Pins
Power and Ground pins
Note: Configuration pin option. See Section 2.7 for Jumper Definitions.
The definitions below define the functionality of each pin.
Type: I Input
Type: O Output
Type: I/O Input/Output
Type: OD Open Drain
Type: PD, PU Internal Pulldown/Pullup
Type: S Configuration Pin (All configuration pins have weak internal pullups or pulldowns. If
a different default value is needed, then use an external 2.2k resistor. See
Section 2.7 for details.)
2.1 Serial Management Interface
PIN
TYPE DESCRIPTION
NAME NO.
MANAGEMENT DATA CLOCK: Clock signal for the management data input/output (MDIO) interface. The
MDC 32 I maximum MDC rate is 25 MHz; there is no minimum MDC rate. MDC is not required to be synchronous to the
MII_TX_CLK or the MII_RX_CLK.
MANAGEMENT DATA I/O: Bidirectional command / data signal synchronized to MDC. Either the local
MDIO 33 I/O
controller or the TLK100 may drive the MDIO signal. This pin requires a pull-up resistor with value 1.5 k.
Copyright © 2009, Texas Instruments Incorporated Pin Descriptions 5
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