NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 113
NS7520B-1-C36
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NS7520B-1-C36
Manufacturer:
Digi International
Quantity:
10 000
Part Number:
NS7520B-1-C36
Manufacturer:
NETARM
Quantity:
20 000
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Chip Select Option Register B
Address: FFC0 0018/28/38/48/58
Table 39: Chip Select Option Register B bit definition
D31:06
D05:04
D03:02
Bits
15
31
30
14
N/A
R/W
R/W
Access
29
13
28
12
Reserved
WAIT[5:4]
BCYC[3:2]
Mnemonic
27
11
Reserved
26
10
25
9
N/A
0 for
CS[4:1],
’b11 for
CS0
0
Reset
24
8
Reserved
w w w . d i g i e m b e d d e d . c o m
23
7
N/A
Memory timing control fields
The WAIT field controls the number of wait
states for all single cycle memory transfers and
the first memory cycle of a burst transaction. The
complete WAIT field is the concatenation of the
four WAIT bits in Chip Select Option Register A
and the two WAIT bits in this register.
The BCYC field controls the number of clock
cycles for the secondary portion of a burst cycle.
The complete BCYC field is the concatenation
of the two BCYC bits in Chip Select Option
Register A and the two BCYC bits in this
register.
For OE- or WE-controlled cycles, an additional
BCLK cycle is added to each memory cycle.
For information about related DRSEL and
DMODE settings, see the Chip Select Option
Register A bit definition table (on page 97).
Description
22
6
21
M e m o r y C o n t r o l l e r M o d u l e
WAIT[5:4]
5
20
4
19
BCYC[3:2]
3
18
2
17
1
SYNC
16
0
1 0 1
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