# ScsiPeripheral_TestUnitReadyRequest ## Overview Defines the request structure of the **test unit ready** command. **Since**: 18 **Related module**: [SCSI Peripheral DDK](_s_c_s_i.md) ## Summary ### Member Variables | Name| Description| | -------- | -------- | | uint8_t [control](#control) | **Control** field used to specify control information.| | uint32_t [timeout](#timeout) | Timeout duration, in ms.| ## Member Variable Description ### control ``` uint8_t ScsiPeripheral_TestUnitReadyRequest::control ``` **Description** **Control** field used to specify control information. ### timeout ``` uint32_t ScsiPeripheral_TestUnitReadyRequest::timeout ``` **Description** Timeout duration, in ms.