NS7520B-1-C36 Digi International, NS7520B-1-C36 Datasheet - Page 18

• 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

Notes:
1
2
1 4
PORTC5
PORTC4
PORTC3
PORTC2
PORTC1
PORTC0
G e n e r a l P u r p o s e I / O
GPIO signal
RESET output indicates the reset state of the NS7520. PORTC4 persists beyond the negation of
RESET_ for approximately 512 clock cycles if the PLL is disabled. When the PLL is enabled,
PORTC4 persists beyond the negation of RESET_ to allow for PLL lock for 100 microseconds
times the ratio of the VCO to XTALA.
This GPIO is left in output mode active following a hardware RESET.
PORTC[3:0] pins provide level-sensitive interrupts. The inputs do not need to be synchronous
to any clock. The interrupt remains active until cleared by a change in the input signal level.
1
2
2
2
2
RTSB_
RXCB/RIB_/
OUT1B_
RXDB
DSRB_
CTSB_
TXCB/
OUT2B_/
DCDB_
Serial
signal
N S 7 5 2 0 D a t a s h e e t
REJECT_
RESET_
LIRQ3/
DACK2_
LIRQ2/RPSF_
LIRQ1/
DONE2_(O)
LIRQ0/
DONE2_(I)
Other
signal
F15 U
F12 U
F13 U
E15 U
E12 U
E14 U
Pin
I/O
I/O
I/O
I/O
I/O
I/O
I/O
0 3 / 2 0 0 6
2
2
2
2
2
2
OD
Channel 2 RTS_
Pgm’able Out/
Channel 2
RXCLK/Channel 2
ring signal/
Channel 2 SPI
clock (CLK)
Channel 2 RXD
Channel 2 DSR_
Channel 2 CTS_
Pgm’able Out/
Channel 2 DCD/
Channel 2 SPI
enable (SEL_)/
Channel 2 TXCLK
Serial channel
description
CAM reject
RESET output
Level sensitive IRQ /
DMA channel 4/6
ACK
Level sensitive IRQ/
CAM request
Level sensitive IRQ /
DMA channel 4/6
DONE_Out
Level sensitive IRQ /
DMA channel 4/6
DONE_In
Other
description