CY37512VP208-83NC

The Programmable Interconnect Matrix (PIM) in the Ultra37000 CPLD architecture serves the purpose of providing a global routing matrix for signals from I/O pins and feedbacks from logic blocks. It offers robust interconnection to avoid fitting and density limitations, allowing signals to be routed to the appropriate logic blocks. The PIM inputs consist of all I/O and dedicated input pins, as well as macrocell feedbacks from within the logic blocks. Each logic block receives 36 inputs from the PIM and their complements, enabling 32-bit operations to be implemented in a single pass through the device. The simple timing of the PIM is accounted for in the timing specifications for each device, with no additional delay for traveling through the PIM. Routing signals through the PIM is completely invisible to the user, as all routing is accomplished by software, eliminating the need for hand routing. The PIM enhances the routing capacity of the Ultra37000 family and facilitates last-minute logic changes while maintaining fixed pin assignments.

The main feature of the Ultra37000 CPLD family is the In-System Reprogramming (ISR) capability, which allows for programming or reprogramming a device on-board without changing the system timing or device pinout. This feature enables design changes during debug or field upgrades without the need for board respins. The Ultra37000 family implements ISR through a JTAG-compliant interface, robust routing resources for pinout flexibility, and a simple timing model for consistent system performance.

The Ultra37000 CPLD family supports a range of macrocells depending on the specific device within the family. The devices in the Ultra37000 family range from 32 macrocells to 512 macrocells. The breakdown of macrocells for each device is as follows: - CY37032: 32 macrocells - CY37064: 64 macrocells - CY37128: 128 macrocells - CY37192: 192 macrocells - CY37256: 256 macrocells - CY37384: 384 macrocells - CY37512: 512 macrocells Therefore, the Ultra37000 CPLD family supports a varying number of macrocells depending on the specific device chosen, ranging from 32 to 512 macrocells.