STE100P_06 datasheet(5/31 Pages) STMICROELECTRONICS

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STE100P

iref

Reference Resistor connecting pin for reference current, directly connect a 5K

Ω ±

1% resistor to Vss.

ledr10

I/O

LED display for 10Ms/s link status. This pin will be driven on continually when

10Mb/s network operating speed is detected.

The pull-up/pull-down status of this pin is latched into the PR20 bit 7 during

power up/reset.

ledtr

LED display for Tx/Rx Activity status. This pin will be driven on at a 10 Hz blinking

frequency when either effective receiving or transmitting is detected.

The status of this pin is latched into the PR20 bit 6 during power up/reset.

ledl

I/O

LED display for Link Status. Blinks when there is TX or RX activity. This pin will be

driven on continually when a good Link test is detected.

The status of this pin is latched into the PR20 bit 5 during power up/reset.

ledc

I/O

LED display for Full Duplex or Collision status. This pin will be driven on

continually when a full duplex configuration is detected. This pin will be driven on

at a 20 Hz blinking frequency when a collision status is detected in the half duplex

configuration.

The status of this pin is latched into the PR20 bit 4 during power up/reset.

leds

I/O

LED display for 100Ms/s link status. This pin will be driven on continually when

100Mb/s network operating speed is detected.

The status of this pin is latched into the PR20 bit 3 during power up/reset.

cfg0

Configuration Control 0.

When A/N is enabled, cfg0 determines operating mode advertisement

capabilities in combination with cfg1 when mf0/ PR0:12 =1. (See Table 2)

When A/N is disabled, cfg1 disables mlt3 and directly affects PR19:0

When cfg0 is Low, mlt3 encoder/decoder is enabled and PR19:1 =0.

When cfg0 is High, mlt3 encoder/decoder is bypassed and PR19:1 = 1.

cfg1

Configuration Control 1.

When A/N is enabled, cfg1 determines operating mode advertisement

capabilities in combination with cfg1 when mf0/ PR0:12 =1. (See Table 2)

When A/N is disabled, CFG1 enables Loopback mode and directly affects PR0

bit 14.

When cfg1 is Low, Loopback mode is disabled and PR0:14 = 0.

When cfg1 is High, Loopback mode is enabled and PR0:14 = 1.

reset

Reset (Active-Low). This input must be held low for a minimum of 1 ms to reset

the STE100P. During Power-up, the STE100P will be reset regardless of the state

of this pin, and this reset will not be complete until after >1ms.

rip

Reset In Progress. This output is used to indicate when the device has

completed power-up/reset and the registers and functions can be accessed.

When rip is High, power-up/reset has been successful and the device can be

used normally

When rip is Low, device reset is not complete.

8, 30,31,

nc (No Connection)

26, 33

test,

test_se

Test pins. Should be tied to ground for normal operation

pwrdwn

Power Down. When High, forces STE100P into Power Down mode. This pin is

OR’ed with the Power Down bit (PR0:11). During the Power Down mode, txp/txn

outputs and all LED outputs are 3-stated, and the MII interface is isolated.

Table 2. Pin Description (continued)

Pin No.

Name

Type

Description

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