NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 32

• 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

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P i n o u t d e t a i l t a b l e s a n d s i g n a l d e s c r i p t i o n s
Table 7: Ethernet interface MAC signal description
COL
CRS
RXCLK
RXD3
RXD2
RXD1
RXD0
RXER
RXDV
Mnemonic
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
Transmit collision
Receive carrier sense
Receive clock
Receive data signals
Receive error
Receive data valid
Signal
An input to the NS7520 from the external PHY module.
Input signal asserted by the external Ethernet PHY when a
collision is detected.
Asserted by the external Ethernet PHY whenever the
receive medium is non-idle.
The receive clock provides the synchronous data clock for
receive data.
Nibble bus used by the NS7520 to input receive data from
the external Ethernet PHY. All receive data signals are
synchronized to RXCLK.
In ENDEC mode, only RXD0 is used for receive data.
Input asserted by the external Ethernet PHY when the
Ethernet PHY encounters invalid symbols from the
network.
Input asserted by the external Ethernet PHY when the PHY
drives valid data on the RXD inputs.
Description