DP83849CVS/NOPB National Semiconductor, DP83849CVS/NOPB Datasheet - Page 91

• 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

8.2.23 100BASE-TX Signal Detect Timing
Note: The signal amplitude on PMD Input Pair must be TP-PMD compliant.
8.2.24 100 Mb/s Internal Loopback Timing
Note1: Due to the nature of the descrambler function, all 100BASE-TX Loopback modes will cause an initial “dead-time”
of up to 550 s during which time no data will be present at the receive MII outputs. The 100BASE-TX timing specified is
based on device delays after the initial 550 s “dead-time”.
Note2: Measurement is made from the first rising edge of TX_CLK after assertion of TX_EN.
T2.23.1
T2.23.2
T2.24.1
Parameter
Parameter
PMD Input Pair
SD+ internal
RXD[3:0]
TXD[3:0]
TX_CLK
RX_CLK
SD Internal Turn-on Time
SD Internal Turn-off Time
TX_EN to RX_DV Loopback
TX_EN
RX_DV
CRS
Description
Description
T2.23.1
T2.24.1
100 Mb/s internal loopback mode
91
Notes
Notes
T2.23.2
Min
Min
Typ
Typ
www.national.com
Max
Max
350
240
1
Units
Units
ms
ns
s