---
title: startTimeout
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.3+]
path: iokit/ioi2cbustiming/1410316-starttimeout
---

# startTimeout

Maximum time to wait for a client to respond after a start signal.

## Declaration

```occ
AbsoluteTime startTimeout;
```

## See Also

### Fields

- [bitTimeout](iokit/ioi2cbustiming/1410318-bittimeout.md)
- [byteTimeout](iokit/ioi2cbustiming/1410362-bytetimeout.md)
- [acknowledgeTimeout](iokit/ioi2cbustiming/1410369-acknowledgetimeout.md)
- [riseFallTime](iokit/ioi2cbustiming/1410322-risefalltime.md)
- [__reservedA](iokit/ioi2cinterface_h_user-space/ioi2cbustiming/1812622-_reserveda.md)