OX16C954 Просмотр технического описания (PDF) - Unspecified

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OX16C954

High Performance Quad UART with 128-byte FIFOs Intel / Motorola Bus Interface

Unspecified 

OXFORD SEMICONDUCTOR LTD.

thresholds for automatic flow control can be programmed

to operate at a variety of trigger levels.

TX/RX Disable:

The transmitter and receiver can be independently

disabled.

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.

OX16C954 rev B

RS485 buffer enable:

The function of the DTR# pin may be re-assigned to buffer-

enable signal for RS485 line driver in half-duplex mode

(see ACR[4:3] in section 15.3).

Device ID:

Four bytes of device ID are available to identify the

OX16C954 device to software drivers.

Infrared ‘IrDA’ interface:

The UART contains an IrDA compliant modulator and

demodulator.

9-bit data framing

The UART may be configured for use in 9-bit character

framing for multi-drop protocols, where a tag ID (9th bit)

differentiates address and data characters.

Dual Voltage Operation(TQFP)

The 80pin TQFP package option can operate with supply

voltages of either 5.0v or 3.3v, thereby reducing inventory

controls. The VDETECT pin will need to be set according

to the voltage environment.

Data Sheet Revision 1.0

Page 6

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