E-STE100P STMicroelectronics, E-STE100P Datasheet - Page 18

• Manufacturer Part Number: E-STE100P
• Description: IC TRANSCEIVER 3.3V 64 TQFP
• Manufacturer: STMicroelectronics
• Type: Transceiverr

Specifications of E-STE100P

• Number Of Drivers/receivers: 1/1
• Protocol: MII
• Voltage - Supply: 3.15 V ~ 3.45 V
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Number Of Receivers: 1
• Data Rate: 10/100Mbps
• Operating Supply Voltage (typ): 3.3V
• Package Type: TQFP
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 3.45V
• Operating Supply Voltage (min): 3.15V
• Mounting: Surface Mount
• Pin Count: 64
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-2143; STE100P

STE100P
7.9 LED Display Operation
The STE100P provides 5 LED pins, the detail descriptions about the operation are described in the PIN
Description section, and as follows.
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7.10 Reset Operation
There are two ways to reset the STE100P. First, for hardware reset, the STE100P can be reset via RESET
pin (pin 28). The active low Reset input signal is required at least 1 ms to ensure proper reset operation.
Second, for software reset, when bit 15 of register PR0 is set to 1, the STE100P will reset entire circuits
and registers to their default values, then clear the bit 15 of PR0 to 0, and set the RIP output pin 29 to logic
1. Both hardware and software reset operations initialize all registers to their default values. This process
includes re-evaluation of all hardware-configurable registers. Logic levels on several I/O pins are detected
during hardware reset period to determine the initial functionality of STE100P. Some of these pins are
used as outputs after the reset operation. Care must be taken to ensure that the configuration setup will
not interfere with normal operation. Dedicated configuration pins can be tied to the Vcc or ground directly.
Configuration pins multiplexed with LED outputs should be weakly pulled up or weakly pulled down
through resistors as shown in the following circuits.
Figure 5.
Figure 6.
18/31
Speed LED: 100Mbps(on) or 10Mbps(off)
Receive LED: Blinks at 10Hz when receiving, but not colliding
Transmit LED: Blinks at 10Hz when transmitting, but not colliding
Link LED: On when 100M or 10M link ok
Collision LED: Blinks at 20Hz to indicate a collision