NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 236

• 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 2 4
S e r i a l C h a n n e l r e g i s t e r s
Table 85: Serial Channel Control Register A
D29
D28
D27
D26
D25:24
D23
Bits
R/W
R/W
R/W
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
STICKP
EPS
PE
STOP
WLS
CTSTX
Mnemonic
0
0
0
0
0
0
Reset
Stick parity
Can be used to force the UART parity field to a certain
state, as defined by the EPS field, instead of a parity
bit calculated against the data word. STICKP applies
only when the PE field is also set to 1.
Set the STICKP field to 1 to force transmission of the
static parity value.
Even parity select
0
1
Determines whether the serial channel uses odd or
even parity when calculating the parity bit in UART
mode. When the STICKP field is set, the EPS field
defines the static state for the parity bit.
Parity enable
When set, parity is enabled for the UAT transmitter
and receiver. The transmitter generates proper parity.
The receiver checks for proper parity. If the receiver
encounters a bad parity bit, the RPE field is set in
Serial Channel Status Register A.
Number of stop bits
0
1
Determines the number of stop bits in each UART
transmitter.
Data word length select
00
01
10
11
Determines the number of data bits in each UART
data word.
Enable the transmitter with active CTS
Supports hardware handshaking. When CTSTX is set,
the transmitter operates only when the external CTS
signal is in the active state. An external device can use
CTS to temporarily stall data transmission.
Description
Odd parity
Even parity
1 stop bit
1.5 stops for a 5-bit word, 2 stop bits for other
words.
5 bits
6 bits
7 bits
8 bits