CD2401 Intel, CD2401 Datasheet - Page 75

• Manufacturer Part Number: CD2401
• Description: Multi-protocol Communications Controller
• Manufacturer: Intel

Multi-Protocol Communications Controller — CD2401
The LNext option (COR7[6]) provides a mechanism to transfer flow control and other special
characters, without invoking flow control or special character interrupts at the receiver. If the
LNext option is enabled when the LNext character is received, the following character is just
passed to the CPU as a normal character. The LNext character is programmed by the LNext
register. The ‘strip’ feature (COR7[7]) strips the eighth bit off each error-free received character.
This has no effect on the transmitted data.
Figure 15
on
page 76
through
page 78
shows the exact
order of the CD2401 character processing steps and the receive character processing flow for
Async mode in flowchart format.
Datasheet
75