Altera Hybrid Memory Cube Controller - Manual (Page 30)

The HMC Controller IP core includes the following components:
• Two data paths, an HMC TX path and an HMC RX path. Each path includes a link layer module, a
lane swapper, and high-speed transceivers on the HMC link.
• An initialization state machine.
• A register control block.
• An Arria 10 Native PHY dynamic reconfiguration block.
The TX lane swapper remaps the HMC TX lanes to transceiver channels according to the TX mapping
parameter. The RX lane swapper remaps the HMC RX lanes from transceiver channels according to the
RX mapping parameter.
Interfaces Overview
The Altera HMC Controller IP core supports multiple external interfaces.
Application Interfaces
The data path request and response interfaces, also called the application request interface and the
application response interface, provide a 256-bit or 512-bit data bus and dedicated signals for the applica‐
tion to provide HMC request packet field values and to read HMC response packet field values.
The interfaces support HMC Read and HMC Write requests with specific payload sizes.
Table 3-1: Application Data Width and Supported Payloads Depend on IP Core Variation
IP Core Variation Full-width Half-width
Memory Interface to HMC Device 16-lane link 8-lane link
Client Data Interface Width 512 bit 256 bit
READ and WRITE Transaction Payload Support
(Bytes)
16, 32, 64, 128 16, 32, 48, 64, 80, 96, 112,
128
Related Information
Application Interface Signals on page 4-1
HMC Interface
The HMC interface connects to the external HMC device, and complies with the HMC specification. The
interface provides a single 8-lane or 16-lane link, configured in an Altera device in 8 or 16 adjacent
transceiver channels.
The HMC Controller IP core operates in Response Open Loop Mode.
Related Information
• HMC Interface Signals on page 4-8
The HMC Controller IP core's HMC interface connects to the external HMC device's link interface and
main reset signal.
• HMC Controller IP Core Supported HMC Transaction Types on page 1-3
3-2 Interfaces Overview
UG-01152
2015.05.04
Altera Corporation Functional Description
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