NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 90

• 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

7 8
G E N m o d u l e r e g i s t e r s
Table 31: PORTC register bit definition
PORTC configuration
The CSF, CDIR, and CMODE 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,
bit cannot be used in that configuration.
Table 32: PORTC configuration
D07:00
PORTC7
PORTC6
PORTC5
PORTC4
PORTC3
PORTC2
PORTC1
Bits
PORTC
bit
R/W
Access
N S 7 5 2 0 H a r d w a r e R e f e r e n c e , R e v G 9 / 2 0 0 7
GPIO IN
GPIO IN
GPIO IN
GPIO IN
GPIO IN
GPIO IN
GPIO IN
CMODE=0
CDIR=0
CDATA
Mnemonic
GPIO OUT
GPIO OUT
GPIO OUT
GPIO OUT
GPIO OUT
GPIO OUT
GPIO OUT
CDIR=1
0
Reset
PORTC data register
Used when a PORTC bit is configured to operate in GPIO
mode.
Each bit in the CDATA field corresponds to one of the
PORTC bits; D07 controls PORTC7, D06 controls
PORTC6, and so on.
Description
RIB_
CMODE=1
CDIR=0
Reading the CDATA field provides the current state 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.
Writing the CDATA field defines the current state of
Writing the CDATA field when configured in GPIO
CSF=0
LEVELIRQ3=CDIR3
LEVELIRQ2=CDIR2
LEVELIRQ1=CDIR1
PORTC7>CMODE=1>CDIR=0
IRQOUT_
DTR_
RTS_
RESET_OUT_
CDIR=1
), the