NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 254

• 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

2 4 2
S e r i a l C h a n n e l r e g i s t e r s
Register bit assignment
Table 90: Serial Channel Bit-Rate register bit definition
D31
D30
D29
Bits
EBIT
Rsvd
15
31
MODE
TICS
30
14
T
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
RSVD
SRC
RX
29
13
RICS
SRC
TX
28
12
EBIT
TMODE
RXSRC
Mnemonic
Rsvd
EXT
RX
27
11
EXT
TX
26
10
25
9
0
0
0
Reset
CLKM
UX
24
8
Bit-rate generator enable
Enables or disables the internal bit-rate generator.
0
1
Timing mode
0
1
Receive clock source
0
1
Controls the source of the receiver clock. The receive
clock can be provided by an internal source, as
determined by the value in the RICS field, or by an
input on the OUT1 signal attached to the PORTA/C
ports (configured as a special function input).
Description
TXC
INV
23
7
Disables the bit-rate generator
Enables the bit-rate generator
16X mode
Use TDCR/RDCR
forced to 16X operation.
multiplier is chosen by the TDCR and RDCR
fields.
When the transmitter or receiver are configured
to use an external timing source (TXSRC or
RXSRC set to 1), the serial channel is configured
automatically to operate in 1X mode. The serial
channel clock is provided directly from the
OUT1/OUT2 inputs through the PORTA/
PORTC interface. Setting TXSRC to 1 overrides
any TXEXT setting.
Internal
External (input through OUT1 signal)
When TMODE is set to 0, the serial channel is
When TMODE is set to 1, an oversampling
RXC
INV
22
6
NREG
CLK
INV
21
5
20
4
TDCR
19
3
Rsvd
18
2
17
1
RDCR
16
0