DP83902AVLJ National Semiconductor, DP83902AVLJ Datasheet - Page 18

• Manufacturer Part Number: DP83902AVLJ
• Description: IC CTRLR SER NETWORK IN 100PQFP
• Manufacturer: National Semiconductor

Specifications of DP83902AVLJ

• Controller Type: Serial Network Interface Controller
• Interface: Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 140mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-MQFP, 100-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DP83902AVLJ

7 0 Packet Reception
6 Place the ST-NIC in either mode 1 or mode 2 loopback
7 Issue the START command to the ST-NIC This can be
8 Remove one or more packets from the receive buffer
9 Reset the overwrite warning (OVW overflow) bit in the
This can be accomplished by setting bits D2 and D1 of
the Transmit Configuration Register to ‘‘0 1’’ or ‘‘1 0’’
respectively
accomplished by writing 22H to the Command Register
This is necessary to activate the ST-NIC’s Remote DMA
channel
ring
Interrupt Status Register
(Continued)
Received Packet Aborted If It Hits Boundary
18
10 Take the ST-NIC out of loopback This is done by writ-
11 If the ‘‘Resend’’ variable is set to a 1 reset the ‘‘Re-
Note 1 If Remote DMA is not being used the ST-NIC does not need to be
started before packets can be removed from the receive buffer ring Hence
step 8 could be done before step 7
Note 2 When the ST-NIC is in STOP mode the Missed Talley Counter is
disabled
ing the Transmit Configration Register with the value it
contains during normal operation (Bits D2 and D1
should both be programmed to 0 )
send’’ variable and reissue the transmit command This
is done by writing a value of 26H to the Command Reg-
ister If the ‘‘Resend’’ variable is 0 nothing needs to be
done
TL F 11157– 13