---
title: txCI
framework: SerialDriverKit
role: symbol
role_heading: Instance Property
platforms: [driverkit 19.0+]
path: serialdriverkit/driverkit/serial/serialportinterface/txci
---

# txCI

## Declaration

```occ
mutable uint32_t txCI;
```

## See Also

### Instance Properties

- [rxCI](serialdriverkit/driverkit/serial/serialportinterface/rxci.md)
- [rxPI](serialdriverkit/driverkit/serial/serialportinterface/rxpi.md)
- [rxqlogsz](serialdriverkit/driverkit/serial/serialportinterface/rxqlogsz.md)
- [rxqoffset](serialdriverkit/driverkit/serial/serialportinterface/rxqoffset.md)
- [txPI](serialdriverkit/driverkit/serial/serialportinterface/txpi.md)
- [txqlogsz](serialdriverkit/driverkit/serial/serialportinterface/txqlogsz.md)
- [txqoffset](serialdriverkit/driverkit/serial/serialportinterface/txqoffset.md)