OX16C950 OXFORD [Oxford Semiconductor], OX16C950 Datasheet - Page 6

• Manufacturer Part Number: OX16C950
• Description: High Performance UART with 128 byte FIFOs
• Manufacturer: OXFORD [Oxford Semiconductor]

Additional status:
Software drivers are able to read the status of in-band and
out-of-band automatic flow control, and distinguish
between Xoff and special character received interrupts.
Software reset:
The software driver may reset the device to recover from
unforeseen or unusual error conditions.
Transmitter empty interrupt:
The transmitter can generate an interrupt when the FIFO
and shift register are both empty.
RS485 buffer enable:
The DTR# pin may be re-assigned as a buffer-enable
signal for RS485 line driver in half-duplex mode (see
ACR[4:3] in section 15.3).
2
Data Sheet Revision 1.2
OXFORD SEMICONDUCTOR LTD.
B
LOCK
FIFOSEL
RXRDY#
BDOUT#
TXRDY#
CLKSEL
RESET
RCLK
A[2:0]
D[7:0]
ADS#
XTLO
CS2#
IOW#
DDIS
IOR#
D
XTLI
IOW
CS0
CS1
IOR
IAGRAM
Baud Rate
Generator
and DMA
Interface
Interface
Clock &
Control
Bus
Figure 1: OX16C950 Block Diagram
Registers
Control
Device ID:
Four bytes of device ID are available to identify the
OX16C950 device to software drivers.
Infra-red ‘IrDA’ interface:
The UART contains an IrDA compliant modulator and
demodulator.
9-bit data framing:
The OX16C950 may be configured to use in 9-bit character
framing for multi-drop protocols where a tag ID (9
differentiates address and data characters.
Status
and
Transmitter
supply
Power
Receiver
Interface
128 Byte
128 Byte
Interrupt
Modem
Control
Control
Logic
FIFO
FIFO
OX16C950 rev B
INTSEL
INT
SOUT
SIN
VDD
GND
RTS#
DTR#
OUT1
OUT2
CTS#
DSR#
DCD#
RI#
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th
bit)