Major components of the N1 SoC
The N1 SoC contains the following components and interfaces:
• Two dual-core N1 clusters. Each cluster has:
— 64KB private L1 data cache for each core, and 64KB private L1 instruction cache for each core.
— 1MB private L2 unified cache for each core.
— 1MB shared L3 unified cache in the
DynamIQ Shared Unit
(DSU)
Flash Cache Module
(FCM).
• CMN
‑
600 interconnect with
Coherent Multichip Link
(CML):
— Runs from
INTPLLCLK
default 1.6GHz.
— 1GHz clock,
CXSCLK
for CCIX block in CMN
‑
600 interconnect.
Note
Arm recommends that you set the CMN
‑
600 clock,
INTPLLCLK
, to 1.5GHz maximum using the
SCC registers. See
2.4.3 Clock programming and control
,
• Embedded Logic Analyzer (ELA) on the N1 cores and FCM DSU.
• Base element:
— Secure region. 512KB RAM, 128KB ROM.
— Non-secure region. 64KB RAM, 4KB ROM
• GIC-600 (GICv3).
• MMU-600 Memory Management Units.
• Cortex
‑
M7 based internal
System Control Processor
(SCP) and
Manageability Control Processor
(MCP):
— Secure boot, power management, and device management.
• CoreSight debug and trace.
• One
Cache-Coherent Interconnect for Accelerators
(CCIX) Gen 4 root complex and PHY:
— Connects to one ×16 PCI Express slot.
— Backwards compatible to PCI Express Gen 4.
• One PCIe Gen 4 root complex and PHY, running as Gen 3. Connects to the following downstream
slots and peripherals through a PCI Express Gen 3 switch:
— One ×16 PCI Express slot.
— One ×8 PCI Express slot.
— One ×1 PCI Express slot.
— One ×1 Gigabit Ethernet controller.
— One ×1 SATA 3 controller.
— One ×1 USB 3 controller.
• Master and slave Thin Links (TLX-400) interfaces:
— Expansion to IOFPGA on the board.
• Two 72-bit DMC-620 DDR4 controllers:
— Support for one 288-pin RDIMM DDR4 per interface. Up to DDR4-3200 speed.
• Interfaces for AP, SCP, and MCP, routed to the
Platform Controller Chip
(PCC) on the board:
— Three UART (PL011) interfaces.
— Three I
2
C for SCP and two I
2
C interfaces for MCP.
— Two QSPI interfaces bot bootup, one for SCP, one for MCP.
• 8-bit GPIO (PL061) for on-board I/O and interrupt.
•
Serial Configuration Controller
(SCC) interface to IOFPGA.
•
Process, Voltage, and Temperature
(PVT) sensors.
• 32-bit
Mobile Industry Process Interface
(MIPI-60) Trace port.
• JTAG debug port.
Related information
1.3 The N1 SDP at a glance
2 Hardware description
2.2 N1 SoC
101489_0000_02_en
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