NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 193

• Manufacturer Part Number: NS7520B-1-I46
• Description: IC ARM MICROPROCESSOR 177BGA
• Manufacturer: Digi International
• Series: NET+ARM®r

Specifications of NS7520B-1-I46

• Applications: Network Processor
• Core Processor: ARM7
• Program Memory Type: External Program Memory
• Controller Series: -
• Ram Size: External
• Interface: EBI/EMI, Ethernet, DMA, SPI, UART
• Number Of I /o: 16
• Voltage - Supply: 1.4 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 177-LFBGA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Table 61: MAC Configuration Register 2 bit definition
Pad operation table
This table provides a description of the pad function based on the configuration of
the AUTOP field.
Table 62: PAD operation
D01
D00
Any
Any
Any
Any
Bits
Type
X
X
0
1
AUTOP
R/W
R/W
Access
FLENC
FULLD
Mnemonic
X
0
1
0
VLANP
0
1
1
1
PADEN
0
0
Reset
Frame length checking
When set to 1, both transmit and receive frame lengths are
compared to the Length/Type field. If the Length/Type
field represents a length, the check is performed.
Full duplex
1
0
It is recommended that you limit transmit frames to 512
bytes when full-duplex operation is enabled.
Description
No pad; check CRC.
Pad to 60 bytes; append CRC.
Pad to 64 bytes; append CRC.
Action
w w w . d i g i e m b e d d e d . c o m
The MAC operates in full-duplex mode.
The MAC operates in half-duplex mode.
CRC.
append CRC.
If untagged, pad to 60 bytes and append
If VLAN-tagged, pad to 64 bytes and
E t h e r n e t M o d u l e
1 8 1