DP83849CVS/NOPB National Semiconductor, DP83849CVS/NOPB Datasheet - Page 66

• Manufacturer Part Number: DP83849CVS/NOPB
• Description: IC TXRX ETHERNET PHY DUAL 80TQFP
• Manufacturer: National Semiconductor
• Type: Transceiverr

Specifications of DP83849CVS/NOPB

• Number Of Drivers/receivers: 2/2
• Protocol: Ethernet
• Voltage - Supply: 3 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 80-TQFP, 80-VQFP
• Data Rate: 100Mbps
• Supply Voltage Range: 3V To 3.6V
• Logic Case Style: TQFP
• No. Of Pins: 80
• Operating Temperature Range: 0°C To +70°C
• Msl: MSL 3 - 168 Hours
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Data Rate Max: 10Mbps
• For Use With: DP83849CVS-EVK - BOARD EVALUATION DP83849CVS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *DP83849CVS; *DP83849CVS/NOPB; DP83849CVS

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7.2.7 10 Base-T Status/Control Register (10BTSCR)
This register is used for control and status for 10BASE-T device operation.
14:12
11:9
Bit
4:0
Bit
15
6
5
PHYADDR[4:0]
LED_CNFG[1]
LED_CNFG[0]
10BT_SERIAL
RESERVED
Bit Name
SQUELCH
Bit Name
Table 39. 10Base-T Status/Control Register (10BTSCR), address 1Ah
Table 38. PHY Control Register (PHYCR), address 19h (Continued)
Strap, RW
Strap, RW
Strap, RW
Default
100, RW
0, RW
Default
0, RW
10Base-T Serial Mode (SNI)
1 = Enables 10Base-T Serial Mode
0 = Normal Operation
Places 10 Mb/s transmit and receive functions in Serial Network
Interface (SNI) Mode of operation. Has no effect on 100 Mb/s
operation.
RESERVED:
Must be zero.
Squelch Configuration:
Used to set the Squelch ‘ON’ threshold for the receiver.
Default Squelch ON is 330mV peak.
LED Configuration
In Mode 1, LEDs are configured as follows:
LED_LINK = ON for Good Link, OFF for No Link
LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
LED_ACT/LED_COL = ON for Activity, OFF for No Activity
In Mode 2, LEDs are configured as follows:
LED_LINK = ON for good Link, BLINK for Activity
LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
LED_ACT/LED_COL = ON for Collision, OFF for No Collision
Full Duplex, OFF for Half Duplex
In Mode 3, LEDs are configured as follows:
LED_LINK = ON for Good Link, BLINK for Activity
LED_SPEED = ON in 100 Mb/s, OFF in 10 Mb/s
LED_ACT/LED_COL = ON for Full Duplex, OFF for Half Duplex
PHY Address: PHY address for port.
66
LED_CNFG[1]
Don’t care
0
1
LED_ CNFG[0]
Description
Description
1
0
0
Mode Description
Mode 1
Mode 2
Mode 3