CS8952-CQ Cirrus Logic Inc, CS8952-CQ Datasheet - Page 77

• Manufacturer Part Number: CS8952-CQ
• Description: IC ETHNT 10/100 TXRX 5V 100-TQFP
• Manufacturer: Cirrus Logic Inc
• Type: Transceiverr

Specifications of CS8952-CQ

• Mounting Type: Surface Mount
• Protocol: MII
• Voltage - Supply: 4.75 V ~ 5.25 V
• Package / Case: 100-TQFP, 100-VQFP
• Peak Reflow Compatible (260 C): No
• Supply Voltage: 5V
• Supply Voltage Max: 5V
• Transceiver Type: Ethernet
• Leaded Process Compatible: No
• No. Of Drivers: 6
• Interface Type: MII
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Drivers/receivers: -
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: 598-1205

REPEATER - REPEATER Mode Select. Input, Pin 16.
SPD10 - 10 Mb/s Speed Indication. Output, Pin 68.
SPD100 - 100 Mb/s Speed Indication. Output, Pin 67.
TCM - Transmit Clock Mode Initialization. Input, Pin 59.
TEST[1:0] - Factory Test. Input, Pins 24 and 25.
CrystalLAN™ 100BASE-X and 10BASE-T Transceiver
This pin controls the operation of the CRS (Carrier Sense) pin as shown below:
At power-up or at reset, the value on this pin is latched into bit 12 of the PCS Sub-Layer Configuration
Register (address 17h). This pin includes a weak internal pull-down (> 20 K ), or the value may be set
by an external 4.7 K pull-up or pull-down resistor.
This pin is asserted high when the CS8952 is configured for 10 Mb/s operation. This pin can be used to
drive a low-current LED to indicate 10 Mb/s operation.
This pin is asserted high when the CS8952 is configured for 100 Mb/s operation. This pin can be used
to drive a low-current LED to indicate 100 Mb/s operation.
The logic value on this three-level pin during power-up or reset determines whether TX_CLK is used as
an input or an output, and whether an external 25 MHz clock reference is provided on the CLK25 output
pin.
These pins are for factory test only. They include weak internal pull-downs (> 20 K ), and should be tied
directly to VSS for normal operation.
REPEATER pin
TCM pin
floating
high
high
low
low
low
DUPLEX mode
half duplex
TX_CLK is output
full duplex
don’t care
TX_CLK is input
TX_CLK is input
TX_CLK mode
receive activity only
receive activity only
receive or transmit activity
CLK25 pin is an output
CRS Indicates
CLK25 is disabled
CLK25 is disabled
CLK25 status
CS8952
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