NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 262

• 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

Serial Channel 1, 2 FIFO registers
Serial Channel 1, 2 Receive Buffer Gap Timer
2 5 0
S e r i a l C h a n n e l r e g i s t e r s
Table 91: Bit rate examples
Address: FFD0 0010 / 50
The serial channel FIFO data registers manually interface with the serial controller
FIFOs instead of using DMA support.
Writing to this register loads the transmit FIFO. This register can be written only
when the TRDY bit is set in Serial Channel Status Register A. Writing to the Serial
Channel FIFO register automatically clears the TRDY bit.
Reading to this register empties the receive FIFO. Data is available when the RRDY bit
is set in Serial Channel Status Register A. The RXFDB bits in Serial Channel Status
Register A indicate how many bytes are available to be read. Reading the Serial
Channel FIFO register automatically clears the RRDY bit.
Register bit assignment
Address: FFD0 0014 / 54
230400
D31:00
Bit rate
Bits
15
31
30
14
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
00
CLKMUX
29
13
28
12
DATA
Mnemonic
27
11
N/A
N register
X1 mode
26
10
25
9
0
Reset
24
8
DATA
DATA
0
Data
Writing to this register loads the transmit FIFO
Reading to this register empties the receive FIFO.
X8 mode
Description
23
7
22
6
21
5
N/A
X16 mode
20
4
19
3
18
2
17
1
16
0