NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 105

• 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 37: Chip Select Base Address register bit definition
D31:12
D11:10
Bits
15
31
30
14
BASE
R/W
R/W
Access
29
13
28
12
BASE
PGSIZE
Mnemonic
27
11
PGSIZE
26
10
25
9
DMODE
0
0
Reset
24
8
BASE
DMUX
w w w . d i g i e m b e d d e d . c o m
23
7
S
Base address
Determines the physical base address of the
memory peripheral chip select. This 20-bit field
represents the 20 most significant bits of the
physical address.
To derive the BASE field from a 32-bit physical
address, remove the three least significant digits;
for example, for a physical address of
’h00200000
When accessing a static memory device, the
maximum value of the base address is
0x03000000
See "Setting the chip select address range" on
page 88 for more information.
Peripheral page size
Defines the page size for the attached peripheral
with this equation:
2
The NS7520 halts a burst at the address
boundary defined by the PGSIZE field. This
field must be set to
the chip select.
Description
(6–PGSIZE)
EXTTA
22
6
DMUX
, the BASE field is set to
.
21
M e m o r y C o n t r o l l e r M o d u l e
M
5
IDLE
20
4
‘b00
for 32-bit operation of
SEL
DR
19
3
BURST
18
2
’h00200
WP
17
1
.
16
0
V
9 3