USB Library
USB_NUM_INTERRUPT_NAKS Macro
Syntax
#define USB_NUM_INTERRUPT_NAKS 3   // Define how many NAK's are allowed
Description

Define how many NAK's are allowed during an interrupt OUT transfer before erroring. Interrupt IN transfers that are NAK'd are terminated without error.

MLA - USB Library Help Version : 2.16
http://www.microchip.com/mla