---
title: IOUSBLowLatencyIsocFrame
framework: IOKit
role: symbol
role_heading: Structure
platforms: [Mac Catalyst 18.4+, macOS 10.2+]
path: iokit/iousblowlatencyisocframe
---

# IOUSBLowLatencyIsocFrame

## Declaration

```occ
typedef struct IOUSBLowLatencyIsocFrame {
    ...
} IOUSBLowLatencyIsocFrame;
```

## Overview

Overview Structure used to encode information about each isoc frame that is processed at hardware interrupt time (low latency).

## Topics

### Instance Properties

- [frActCount](iokit/iousblowlatencyisocframe/1426008-fractcount.md)
- [frReqCount](iokit/iousblowlatencyisocframe/1425652-frreqcount.md)
- [frStatus](iokit/iousblowlatencyisocframe/1425755-frstatus.md)
- [frTimeStamp](iokit/iousblowlatencyisocframe/1426222-frtimestamp.md)

## See Also

### Related Documentation

- [IOUSBLowLatencyIsocFrame](iokit/usb_h_user-space/iousblowlatencyisocframe.md)