IP108A
Preliminary datasheet
. 1/42 Feb. 07, 2007
Copyright
© 2006, IC Plus Corp. IP108A-DS-R01.2
Octal 10/100 Fast Ethernet Transceiver
Features
Integrates eight-port 10Base-T, 100Base-TX
and 100Base-FX transceivers in a single chip
Flexible 8-port 100Base-FX configuration.
Supports auto crossover function and force
MDIX function.
Supports auto-negotiation function.
Flexible functional configuration through
either pin setting or register programming
Supports SMII and SS-SMII interfaces
Supports BaseLine Wander (BLW)
compensation
Provides direct drive mode and serial data
latch LED display mode
Embeds DSP-based PHY Transceiver
technology to improve the cable driving
performance
Adjustable current driving capabilities
Provides power-on LED diagnostic function
Power supply: Selectable 3.3V/1.8V for I/O
1.8V power supply for core
Supports Automatic Power Saving (APS)
Mode
Requires only one external clock source
0.18u CMOS technology
128Pin PQFP package
Support Lead Free package (Please refer to
the Order Information)
General description
The IP108A is a highly integrated octal PHY
transceiver for 10Base-T, 100Base-TX and
100Base-FX Fast Ethernet applications. This
device is implemented with advanced 0.18um
CMOS process technology for low power
consumption. For the high port count switch
design such as 16 or 24 or 32-port, the IP108A
can simplify the system design and ensure the
targeted performance.
IP108A can be programmed to operate in various
modes through either hardware (hardware
strapping pin) or software control (registers
setting via SMI). It also supports SMII and
SS-SMII interface to MAC controller to reduce the
pin- count.
The IP108A contains eight independent 10/100M
PHY Transceiver and includes encoder, decoder,
line driver, ADC, DAC, DSP and PLL circuits for
each port. The IP108A enters the Automatic
Power Saving Mode to lower the power
consumption once the link partner is disconnected.
The IP108A just needs an external OSC or crystal
as the clock source, simplifying the system design.
Besides the features described above, the driving
capability of IP108A can be trimmed to minimize
the EMI effect by the advanced slew rate control
technology.