Croc SoC Flow Report

4707c33sg13cmos5l

Chip

Croc chip layout with module outlines. Open full-size modules PNG Rendered layout of the Croc chip die from the Full Flow GDS, showing the pad ring, macros and standard-cell core. Open full-size render PNG Sealed 2000 µmSealed 2000 µmCore 1393.56 µmCore 1391.04 µm
Chip view

Modules PNG SVG PDF Render PNG PDF Open map

Area

CellsCountArea (µm²)Area (GE)
Logic cells25,184316,14156,006
Macros2159,44028,245
Signal + power pads64921,600163,265
Total25,2501,397,181247,516

1 GE = 5.6448 µm² (NAND2). Excludes fillers, antenna cells, corners and bondpads.

Module logic area
ModuleCellsArea (µm²)Area (GE)
Other logic6,505140,19124,836
Core10,04795,49016,917
Debug3,42130,0945,331
JTAG2,02019,4113,439
UART1,36214,4992,569
GPIO9749,0391,601
Timer4634,225749
ROM3232,554453
User69638113

Logic cell footprints. Macros excluded.

Design

MetricValue
Clock target100 MHz
Worst setup slack+0.01 ns
Setup / hold violations0 / 0
SRAM4 KiB
Core area1,938,498 µm²
Core utilization26.23%

Verification

Verilator · RTL and post-Yosys netlist · JTAG boot/result handshake
TestExercisesRTLNetlist
Default configuration
helloworldBoot, SRAM load and UART transmitPassPass
print_configConfiguration register readbackPassPass
iDMA configuration
test_clintTime counter, compare and software-interrupt registersPassPass
test_computeInteger arithmetic, shifts and logicPassPass
test_gpioOutput, pin loopback and togglePassPass
test_idmaSRAM copy and 2D transferPassPass
test_interruptsTrap vector and handler dispatchPassPass
test_obi_timerCount, compare and auto-resetPassPass
test_soc_ctrlBoot address and targetPassPass
test_uartTransmit and internal loopback; not external RXPassPass
DRC

Pass0 violations

Minimal metal, pin, angle and forbidden-geometry checks. Off-grid and recommended checks excluded.

Runtime

Full Flow

Design flow; backend wall time. Simulation branches are not in the total.

  1. Synthesis, 2.4%
  2. Floorplan, 0.1%
  3. Placement, 7.4%
  4. CTS, 0.7%
  5. Routing, 74.3%
  6. Finishing, 0.4%
  7. GDS + seal, 0.2%
  8. Minimal DRC, 14.4%

Backend stage wall time2h16m25s

CI reports: Full Flow · Simulation · FPGA

Durations
StageSecondsShare
Synthesis198.7412.4%
Floorplan8.3350.1%
Placement605.7807.4%
CTS58.1200.7%
Routing6084.51274.3%
Finishing29.4370.4%
GDS + seal17.6150.2%
Minimal DRC1182.46414.4%
Backend stages8185.004100%

Measured stage wall time. Setup and PDK downloads excluded.