DP83849CVS/NOPB National Semiconductor, DP83849CVS/NOPB Datasheet - Page 64

• 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

www.national.com
7.2.5 LED Direct Control Register (LEDCR)
This register provides the ability to directly control any or all LED outputs. It does not provide read access to LEDs. In
addition, it provides control for the Activity source and blinking LED frequency.
15:9
Bit
7:6
8
5
4
3
2
1
0
DRV_SPDLED
DRV_ACTLED
DRV_LNKLED
BLINK_FREQ
LEDACT_RX
RESERVED
Bit Name
SPDLED
LNKLED
ACTLED
Table 37. LED Direct Control Register (LEDCR), address 18h
Default
00, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RW
0, RO
RESERVED: Writes ignored, read as 0.
1 = Activity is only indicated for Receive traffic
0 = Activity is indicated for Transmit or Receive traffic
LED Blink Frequency
These bits control the blink frequency of the LED_LINK output
when blinking on activity is enabled.
0 = 6Hz
1 = 12Hz
2 = 24Hz
3 = 48Hz
1 = Drive value of SPDLED bit onto LED_SPEED output
0 = Normal operation
1 = Drive value of LNKLED bit onto LED_LINK output
0 = Normal operation
1 = Drive value of ACTLED bit onto LED_ACT/LED_COL output
0 = Normal operation
Value to force on LED_SPEED output
Value to force on LED_LINK output
Value to force on LED_ACT/LED_COL output
64
Description