NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 200

• 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

1 8 8
E F E c o n f i g u r a t i o n
Table 68: Test register bit definition
D02
D01
D00
Bits
R/W
R/W
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
TBACK
TPAUSE
SPQ
Mnemonic
0
0
0
Reset
Test backpressure
Set this bit to 1 to have the MAC assert backpressure on the
link; this allows preamble to be transmitted raising carrier
sense.
A transmit packet from the system is sent during
backpressure.
Test pause
Set this bit to 1 to allow the MAC Control sublayer to
inhibit transmissions, similar to receipt of a PAUSE receive
control frame with a non-zero pause time parameter.
Shortcut pause quanta
Set this bit to 1 to reduce the effective PAUSE quanta from
64 byte-times to 1 byte-time.
Description