DP83848HSQ National Semiconductor, DP83848HSQ Datasheet - Page 73

• Manufacturer Part Number: DP83848HSQ
• Description: IC, TRANSCEIVER, ENET PHYTER, 40LLP
• Manufacturer: National Semiconductor

Specifications of DP83848HSQ

• Data Rate: 100Mbps
• No. Of Ports: 1
• Ethernet Type: IEEE 802.3u
• Supply Current: 92mA
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: -40°C To +125°C
• Digital Ic Case Style: LLP
• No. Of: RoHS Compliant
• Interface Type: MII Serial, RMII
• Rohs Compliant: Yes

8.2.21 100BASE-TX Signal Detect Timing
Note: The signal amplitude on PMD Input Pair must be TP-PMD compliant.
8.2.22 100 Mb/s Internal Loopback Timing
Note: 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”.
Note: Measurement is made from the first rising edge of TX_CLK after assertion of TX_EN.
T2.21.1
T2.21.2
T2.22.1
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
T2.21.1
T2.22.1
100 Mb/s internal loopback mode
73
Notes
Notes
T2.21.2
Min
Min
Typ
Typ
www.national.com
Max
Max
350
240
1
Units
Units
ms
ns
s