Datasheet

Table of Contents

• Generic Setup details
• Performance Numbers
  • SBL OSPI NOR performance (HS-FS)
  • SBL Fast-xSPI NOR performance (HS-FS)
    • R5FSS0_0 boot time using Fast-xSPI Bootmode
    • C7x audio chime time using Fast-xSPI Bootmode
  • SBL EMMC performance (HS-FS)
  • IPC performance
    • IPC NOTIFY
    • IPC RPMSG
  • EMMC Performance
  • OSPI NOR Flash Performance
  • XIP Benchmark
  • HYPERRAM Performance with cache enabled
  • HYPERRAM XIP benchmark
  • Ethernet Performance
  • Ethernet AVB Performance
  • McASP (audio) Latency
  • ARM R5F - Memory Access latency
  • C7x - Memory Access latency

This datasheet provides the performance numbers of various device drivers in FreeRTOS SDK for AM275X

Generic Setup details

SOC Details	Values
Core	R5F
Core Operating Speed	1000 MHz
Cache Status	Enabled

SOC Details	Values
Core	C75
Core Operating Speed	1000 MHz
Cache Status	Enabled

Optimization Details	Values
Build Profile	Release
R5F Compiler flags	-mcpu=cortex-r5 -mfloat-abi=hard -mfpu=vfpv3-d16 -Wall -Werror -g -mthumb -Wno-gnu-variable-sized-type-not-at-end -Wno-unused-function
R5F Linker flags	-Wl,–diag_suppress=10063 -Wl,–ram_model -Wl,–reread_libs
Code Placement	MSRAM
Data Placement	MSRAM
C7 Compiler flags	-mv7524 –abi=eabi -q -mo -pden -pds=238 -pds=880 -pds1110 –endian=little –disable_inlining -ea.se71 –emit_warnings_as_errors –diag_suppress=770 –diag_suppress=69 –diag_suppress=70 -Dxdc_target_name__=C71 –opt_level=3 –symdebug:none
C7 Linker flags	–silicon_version=7524 -z –emit_warnings_as_errors –diag_suppress=10063 –ram_model –warn_sections -q -x –mapfile_contents=sym_defs
Code Placement	MSRAM / L2RAM
Data Placement	MSRAM / L2RAM

Performance Numbers

SBL OSPI NOR performance (HS-FS)

• Software/Application used : sbl_ospi, ipc_rpmsg_echo
• Cores booted by SBL : r5fss0-0 r5fss0-1 r5fss1-0 r5fss1-1 c75ss0-0 c75ss1-0
• Size of images loaded : 467 KB
• Boot Media Clock : 166.667 MHz
• Mode : PHY enabled, DMA enabled
• Protocol : 8D-8D-8D

SBL boot time breakdown	Time (us)
TIFS init	294
System_init	2743
Board_init	7
FreeRtosTask Create	255
Drivers_open	5789
Board_driversOpen	158
sciServer_init	15084
SBL Drivers_open	3212
SBL Board_driversOpen	5810
Sciclient Get Version	6608
R5FSS0_0 Image Load	2188
R5FSS0_1 Image Load	1652
R5FSS1_0 Image Load	1651
R5FSS1_1 Image Load	1633
DSP 0 Image Load	7020
DSP 1 Image Load	6908
------------------------------—	-----------—
SBL Total Time Taken	61020

SBL Fast-xSPI NOR performance (HS-FS)

• Software/Application used : sbl_ospi, ipc_rpmsg_echo
• Cores booted by SBL : r5fss0-0 r5fss0-1 r5fss1-0 r5fss1-1 c75ss0-0 c75ss1-0
• Size of images loaded : 463 KB
• Boot Media Clock : 133.333 MHz
• Mode : PHY enabled, DMA enabled
• Protocol : 8D-8D-8D

SBL boot time breakdown	Time (us)
TIFS init	294
System_init	2743
Board_init	7
FreeRtosTask Create	255
Drivers_open	5789
Board_driversOpen	158
sciServer_init	15084
SBL Drivers_open	3212
SBL Board_driversOpen	5810
Sciclient Get Version	6608
R5FSS0_0 Image Load	2188
R5FSS0_1 Image Load	1652
R5FSS1_0 Image Load	1651
R5FSS1_1 Image Load	1633
DSP 0 Image Load	7020
DSP 1 Image Load	6908
------------------------------—	-----------—
SBL Total Time Taken	61020

R5FSS0_0 boot time using Fast-xSPI Bootmode

For how to enable Fast XSPI boot refer Using Fast-xSPI Bootmode

• GPIO toggle time from R5FSS0_0 (Measured from PORz)
  • 53 ms
• Cores booted by SBL : r5fss0-0, r5fss0-1, r5fss1-0, r5fss1-1, c75ss0-0, c75ss1-0
• R5FSS0-0 image size = ~ 1 MB and remaining cores by default ipc rpmsg images

C7x audio chime time using Fast-xSPI Bootmode

For how to enable Fast XSPI boot refer Using Fast-xSPI Bootmode

• C7x audio out time (Measured from PORz)
  • 80 ms
• Cores booted by SBL : r5fss0-0, r5fss0-1, r5fss1-0, r5fss1-1, c75ss0-0, c75ss1-0
• C75SS0-0 image size = ~ 1 MB and remaining cores by default ipc rpmsg images
• Includes DAC configuration time

SBL EMMC performance (HS-FS)

• Software/Application used : sbl_emmc, ipc_rpmsg_echo
• Cores booted by SBL : r5fss0-0 r5fss0-1 r5fss1-0 r5fss1-1 c75ss0-0 c75ss1-0
• Size of images loaded : 467 KB
• Boot Media Clock : 200.00 MHz
• Mode : HS200

SBL boot time breakdown	Time (us)
TIFS init	333
System_init	13387
Board_init	5
FreeRtosTask Create	258
Drivers_open	5809
Board_driversOpen	162
sciServer_init	129
SBL Drivers_open	61609
Sciclient Get Version	6648
R5FSS0_0 Image Load	18949
R5FSS0_1 Image Load	16830
R5FSS1_0 Image Load	16830
R5FSS1_1 Image Load	16812
DSP 0 Image Load	19136
DSP 1 Image Load	19059
------------------------------—	-----------—
SBL Total Time Taken	196946

IPC performance

IPC NOTIFY

• 10000 messages are sent and average one way message latency is measured

Local Core	Remote Core	Average Message Latency (us)
c75ss0-0	c75ss1-0	1.700
r5f0-0	r5f0-1	1.133
r5f0-0	r5f1-0	1.261
r5f0-0	r5f1-1	1.121
r5f0-0	c75ss0-0	1.164
r5f0-0	c75ss1-0	1.166

IPC RPMSG

• 1000 messages are sent and average one way message latency is measured

  Local Core	Remote Core	Message Size	Average Message Latency (us)	Max Latency (us)
  r5f0-0	r5f0-1	32	6.975	7
  r5f0-0	r5f0-1	64	8.338	9
  r5f0-0	r5f0-1	112	10.535	11
  r5f0-0	r5f1-0	32	6.820	7
  r5f0-0	r5f1-0	64	8.311	9
  r5f0-0	r5f1-0	112	10.457	11
  r5f0-0	r5f1-1	32	6.971	7
  r5f0-0	r5f1-1	64	8.329	9
  r5f0-0	r5f1-1	112	10.519	11
  r5f0-0	c75ss0-0	32	8.511	10
  r5f0-0	c75ss0-0	64	9.185	10
  r5f0-0	c75ss0-0	112	10.235	11
  r5f0-0	c75ss1-0	32	8.778	10
  r5f0-0	c75ss1-0	64	9.407	10
  r5f0-0	c75ss1-0	112	10.490	11

EMMC Performance

Mode	Data size(MiB)	Write speed(MiBps)	Read speed(MiBps)
SDR50	1	29.34	43.81
DDR50	1	41.35	77.93
HS200	1	59.52	138.55

OSPI NOR Flash Performance

wkup-r5f0-0:

• PHY condition: enabled
• Flash type: SERIAL NOR
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Temperature: 47.86

Non-DQS Tuning Algorithm	Tuning Time (ms)
Default Tuning Window	1.02 ms
Fast Tuning Window	0.42 ms

• Flash type: SERIAL NOR
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D

DQS Tuning Algorithm	Tuning Time (ms)
Default Tuning Window	5.39 ms
Fast Tuning Window	5.40 ms

• Flash frequency: 25Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.44	3.09
1	DAC	Yes	0.44	48.73

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_1S_1S_1S
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.41	6.24
1	DAC	Yes	0.41	6.23

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.44	4.57
1	DAC	Yes	0.44	48.74

• Flash frequency: 133Mhz
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Phy Condition: enabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.43	7.20
1	DAC	Yes	0.43	124.64

• Flash frequency: 133Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: enabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.43	7.67
1	DAC	Yes	0.43	234.02

• Flash frequency: 166Mhz
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Phy Condition: enabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.43	8.20
1	DAC	Yes	0.43	153.31

• Flash frequency: 166Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: enabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.44	8.75
1	DAC	Yes	0.44	283.88

• Flash frequency: 25Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	INDAC	No	0.44	21.07

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_1S_1S_1S
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	INDAC	No	0.42	6.25

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	INDAC	No	0.44	21.06

c75ss0:

• PHY condition: enabled
• Flash type: SERIAL NOR
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Temperature: 49.99

Non-DQS Tuning Algorithm	Tuning Time (ms)
Default Tuning Window	0.96 ms
Fast Tuning Window	0.40 ms

• Flash type: SERIAL NOR
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D

DQS Tuning Algorithm	Tuning Time (ms)
Default Tuning Window	5.02 ms
Fast Tuning Window	5.04 ms

Flash frequency: 25Mhz

• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.45	5.87
1	DAC	Yes	0.45	49.86

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_1S_1S_1S
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.42	6.23
1	DAC	Yes	0.42	6.25

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.45	8.49
1	DAC	Yes	0.45	49.86

• Flash frequency: 133Mhz
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Phy Condition: enabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.44	11.96
1	DAC	Yes	0.44	132.26

• Flash frequency: 133Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: enabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.44	13.34
1	DAC	Yes	0.44	262.44

• Flash frequency: 166Mhz
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Phy Condition: enabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.44	14.62
1	DAC	Yes	0.44	165.02

• Flash frequency: 166Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: enabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	DAC	No	0.45	16.64
1	DAC	Yes	0.44	326.78

• Flash frequency: 25Mhz
• Flash protocol: FLASH_CFG_PROTO_8D_8D_8D
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	INDAC	No	0.45	21.77

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_1S_1S_1S
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	INDAC	No	0.42	6.25

• Flash frequency: 50Mhz
• Flash protocol: FLASH_CFG_PROTO_8S_8S_8S
• Phy Condition: disabled

Data Size(MiB)	READ MODE	DMA Enabled	Write Speed(mbps)	Read Speed(mbps)
1	INDAC	No	0.45	21.77

XIP Benchmark

• Core : R5F
• Core Operating Speed : 800 MHz
• Software/Application used : xip_benchmark
• 1) FIR operation

Caching status	Cycles taken
Code/Data fully cached	23905
Code/Data not cached	52400
Code/Data not cached 1 of 10 iterations	26757

• 2) MEMCPY operation

Caching status	Cycles taken
Code/Data fully cached	1564
Code/Data not cached	3771
Code/Data not cached 1 of 10 iterations	1789

HYPERRAM Performance with cache enabled

For R5 core:-

ECC	Transfer Mode	Write speed(MiBps)	Read speed(MiBps)
Disabled	CPU	80.18	70.00
Disabled	BCDMA	143.82	143.82
enabled	CPU	75.64	64.63
enabled	BCDMA	108.51	136.20

For c7x core:-

ECC	Transfer Mode	Write speed(MiBps)	Read speed(MiBps)
Disabled	CPU	145.11	72.39
Disabled	BCDMA	143.82	143.82
enabled	CPU	109.36	70.31
enabled	BCDMA	108.63	136.01

HYPERRAM XIP benchmark

• Core : R5F
• Core Operating Speed : 800 MHz
• Software/Application used : hyperRam_xip_benchmark
• 1) FIR operation

Caching status	Cycles taken
Code/Data fully cached	23913
Code/Data not cached	48303
Code/Data not cached 1 of 10 iterations	26354

• 2) MEMCPY operation

Caching status	Cycles taken
Code/Data fully cached	1564
Code/Data not cached	4358
Code/Data not cached 1 of 10 iterations	1844

Ethernet Performance

For Ethernet performance Refer to the page Ethernet Performance

Ethernet AVB Performance

For Ethernet AVB performance, refer to the page Performance of Ethernet AVB

McASP (audio) Latency

• McASP operating at 48KHz, I2C mode
• RX to TX pin to pin latency is measured
• Rx To Tx pin to pin latency ~126us

ARM R5F - Memory Access latency

• [32-BIT READ] Self TCM Access Average Latency Per Byte: 1.078125 ns
• [32-BIT READ] MSRAM Access Average Latency Per Byte: 9.132812 ns
• [32-BIT READ] Non-Self TCM Access Average Latency Per Byte: 35.320312 ns
• [64-BIT READ] Self TCM Access Average Latency Per Byte: 0.300781 ns
• [64-BIT READ] MSRAM Access Average Latency Per Byte: 4.617188 ns
• [64-BIT READ] Non-Self TCM Access Average Latency Per Byte: 17.660156 ns

C7x - Memory Access latency

• [32-BIT READ] L2RAM Access Average Latency Per Byte: 2.117188 ns
• [32-BIT READ] MSRAM Access Average Latency Per Byte: 2.320312 ns
• [64-BIT READ] L2RAM Access Average Latency Per Byte: 1.187500 ns
• [64-BIT READ] MSRAM Access Average Latency Per Byte: 1.375000 ns