NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 247

• 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

Table 89: Serial Channel Status Register A bit definition
D27
D26
D25:22
Bits
R
R
N/A
Access
BGAP
CGAP
Reserved
Mnemonic
0
0
N/A
Reset
Buffer GAP timer
Set when the enable receive buffer gap timer is set in
Serial Channel Control Register B and the timeout
value defined in the Receive Buffer GAP Timer
register has expired. This bit indicates that the
maximum allowed time has occurred since the first
byte was placed into the receive data buffer. The
receive data buffer is closed under this condition.
When the receiver is configured for DMA, the BGAP
bit is written automatically to the DMA receive buffer
descriptor’s status field. When not using DMA,
BGAP is valid only while the RBC bit in this register
is set.
Character GAP timer
Set when the enable receive character gap timer is set
in Serial Channel Control Register B and the timeout
value defined in the Receive Character GAP Timer
register has expired. This bit indicates that the
maximum allowed time has occurred since the
previous byte was placed into the receive data buffer.
The receive data buffer is closed under this condition.
When the receiver is configured for DMA, the CGAP
bit is written automatically to the DMA buffer
descriptor’s status field. When not using DMA,
CGAP is valid only while the RBC bit is set in this
register.
N/A
Description
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S e r i a l C o n t r o l l e r M o d u l e
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