NS7520B-1-I46 Digi International, NS7520B-1-I46 Datasheet - Page 256

• 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 4
S e r i a l C h a n n e l r e g i s t e r s
Table 90: Serial Channel Bit-Rate register bit definition
D23
D22
D21
Bits
R/W
R/W
N/A
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
TXCINV
RXCINV
CLKINV
Mnemonic
0
0
0
Reset
Transmit clock invert
0
1
Controls the relationship between transmit clock and
transmit data.
Note:
Receive clock invert
0
1
Controls the relationship between receive clock and
receive data.
Note:
0
1
Description
Normal; TXD driven on falling edge of TX clock
Inverted; TXD driven on rising edge of TX clock
the high-to-low transition of the transmit clock.
the low-to-high transition of the transmit clock.
Normal; RXD sampled on rising edge of RX
clock
Inverted; RXD sampled on falling edge of RX
clock
the low-to-high transition of the receive clock.
the high-to-low transition of the receive clock.
Initial value of the clock signal is low.
Initial value of the clock signal is high.
When set to 0, transmit data changes relative to
When set to 1, transmit data changes relative to
When set to 0, receive data input is sampled at
When set to 1, receive data input is sampled at
When using SPI mode, this bit must be set
to zero.
When using SPI mode, this bit must be set
to zero.