NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 87

• 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 29: PORTA register bit definition
PORTA Configuration
The ADIR and AMODE bits together provide independent configuration of each pin.
Each column in this table denotes one of the possible configurations for each bit. If
there is no entry in one of the columns (for example,
cannot be used in that configuration.
Table 30: PORTA configuration
D07:00
PORTA7
PORTA6
PORTA5
PORTA4
PORTA3
PORTA2
Bits
PORTA
bit
R/W
Access
GPIO IN
GPIO IN
GPIO IN
GPIO IN
GPIO IN
GPIO IN
AMODE=0
ADIR=0
ADATA
Mnemonic
GPIO OUT
GPIO OUT
GPIO OUT
GPIO OUT
GPIO OUT
GPIO OUT
ADIR=1
0
Reset
PORTA data register
Used when a PORTA bit is configured to operate in GPIO
mode.
Each bit in the ADATA field corresponds to one of the
PORTA bits; D07 controls PORTA7, D06 controls
PORTA6, and so on.
Description
DREQ1_IN
SER1_RI_/SER1_RXC
IN/SER1_SPI_S_CLK IN
SER1_RXD
SER1_DSR_
AMODE=1
ADIR=0
w w w . d i g i e m b e d d e d . c o m
of the GPIO signal, regardless of its configuration
mode.
the GPIO signal when the signal is defined to operate
in GPIO output mode.
input mode or special function mode has no effect.
Reading the ADATA field provides the current state
Writing the ADATA field defines the current state of
Writing the ADATA field when configured in GPIO
PORTA7>AMODE=1>ADIR=0
SER1_TXD
SER1_DTR_
SER1_RTS_
SER1_SPI_M_CLK
OUT/SER1_OUT1/
SER1_RXC OUT
DACK1_OUT
AMUX
ADIR=1
G E N M o d u l e
), the bit
7 5