NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 167

• 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

Figure 23: MAC block diagram
Other modules in the diagram include:
Host
EFE
MAC core — 10/100 Mbps media access controller. Performs the CSMA/CD
function and flow control functions. See ISO/IEC and IEEE Standard 802.3x
documentation for more information.
Host — Host interface. Provides a 16-bit interface for control and
configuration.
CLKRST — Clocks and resets. Provides a central location for clock trees and
reset logic.
MIIM — MII management. Provides a control/status path to MII PHYs.
SAL — Station address logic. Performs station address, broadcast, and
multicast filtering.
MAC core
MCS
HOST
TFUN
RFUN
SAL
CLKRST
w w w . d i g i e m b e d d e d . c o m
Interface
MIIM
MII
ENDEC
PMD
Mgmt
TX
RX
E t h e r n e t M o d u l e
10/100
PHY
1 5 5