NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 197

• Manufacturer Part Number: NS7520B-1-C36
• Description: IC ARM MICROPROCESSOR 177BGA
• Manufacturer: Digi International
• Series: NET+ARM®r

Specifications of NS7520B-1-C36

• 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

Maximum Frame register
Address: FF80 0414
Register bit assignment
Table 66: Maximum Frame register bit definition
D31:16
D15:00
Bits
15
31
30
14
N/A
R/W
Access
29
13
28
12
Reserved
MAXF
Mnemonic
27
11
26
10
N/A
’h
0600
Reset
25
9
24
8
Reserved
N/A
Maximum frame length
Represents a maximum receive frame of 1536 octets (resets
to
octets. A tagged frame adds four octets, for a total of 1522
octets.
Program this field if you want a shorter maximum length
restriction.
Note:
Description
MAXF
’h0600
w w w . d i g i e m b e d d e d . c o m
23
7
). An untagged maximum size Ethernet is 1518
If a proprietary header is allowed, adjust this
field accordingly. For example, if
4-byte headers are appended to frames, the
MAXF field should be set to 1526 octets. This
setting allows the maximum VLAN tagged
frame plus the 4-byte header.
22
6
21
5
20
4
19
3
E t h e r n e t M o d u l e
18
2
17
1
16
0
1 8 5