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
  • HYPERRAM XIP benchmark
  • Ethernet Performance
  • Ethernet AVB Performance
  • McASP (audio) 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 : 463 KB
• Boot Media Clock : 166.667 MHz
• Mode : PHY enabled, DMA enabled
• Protocol : 8D-8D-8D

SBL boot time breakdown	Time (us)
TIFS init	779
System_init	1903
Board_init	7
FreeRtosTask Create	296
Drivers_open	5793
Board_driversOpen	159
sciServer_init	15160
SBL Drivers_open	3233
SBL Board_driversOpen	5886
Sciclient Get Version	6546
R5FSS0_0 Image Load	2187
R5FSS0_1 Image Load	1644
R5FSS1_0 Image Load	1638
R5FSS1_1 Image Load	1625
DSP 0 Image Load	7007
DSP 1 Image Load	6893
------------------------------—	-----------—
SBL Total Time Taken	60762

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	801
System_init	1901
Board_init	8
FreeRtosTask Create	296
Drivers_open	5794
Board_driversOpen	160
sciServer_init	15164
SBL Drivers_open	3230
SBL Board_driversOpen	472
Sciclient Get Version	6551
R5FSS0_0 Image Load	2226
R5FSS0_1 Image Load	1683
R5FSS1_0 Image Load	1677
R5FSS1_1 Image Load	1660
DSP 0 Image Load	7117
DSP 1 Image Load	7010
------------------------------—	-----------—
SBL Total Time Taken	55757

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 : 463 KB
• Boot Media Clock : 200.00 MHz
• Mode : HS200

SBL boot time breakdown	Time (us)
TIFS init	1079
System_init	793
Board_init	4
FreeRtosTask Create	255
Drivers_open	6808
Board_driversOpen	159
sciServer_init	114
SBL Drivers_open	16431
Sciclient Get Version	6528
R5FSS0_0 Image Load	13763
R5FSS0_1 Image Load	11341
R5FSS1_0 Image Load	12086
R5FSS1_1 Image Load	12040
DSP 0 Image Load	18117
DSP 1 Image Load	18763
------------------------------—	-----------—
SBL Total Time Taken	118287

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	1.425
r5f0-0	r5f0-1	1.131
r5f0-0	r5f1-0	1.261
r5f0-0	r5f1-1	1.140
r5f0-0	c75ss0-0	1.163
r5f0-0	c75ss1-0	1.163

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	6.959	7
  r5f0-0	r5f0-1	64	8.331	8
  r5f0-0	r5f0-1	112	10.515	11
  r5f0-0	r5f1-0	32	6.811	7
  r5f0-0	r5f1-0	64	8.290	9
  r5f0-0	r5f1-0	112	10.466	11
  r5f0-0	r5f1-1	32	6.965	7
  r5f0-0	r5f1-1	64	8.352	9
  r5f0-0	r5f1-1	112	10.518	11
  r5f0-0	c75ss0-0	32	8.673	10
  r5f0-0	c75ss0-0	64	9.296	10
  r5f0-0	c75ss0-0	112	10.368	11
  r5f0-0	c75ss1-0	32	8.906	10
  r5f0-0	c75ss1-0	64	9.543	10
  r5f0-0	c75ss1-0	112	10.564	11

EMMC Performance

Mode	Data size(MiB)	Write speed(MiBps)	Read speed(MiBps)
SDR50	1	26.20	45.23
DDR50	1	50.49	82.64
HS200	1	79.73	157.23

OSPI NOR Flash Performance

wkup-r5f0-0:

DQS Tuning Algorithm	Tuning Time (ms)
Default Tuning Window	5.29 ms
Fast Tuning Window	5.36 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	3.09
1	DAC	Yes	0.45	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	0.43	6.24
1	DAC	Yes	0.42	6.23

• 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	0.45	7.66
1	DAC	Yes	0.45	233.99

• 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	8.75
1	DAC	Yes	0.45	283.86

• 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	21.14

• 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

c75ss0:

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	0.43	5.87
1	DAC	Yes	0.43	49.85

• 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	6.23
1	DAC	Yes	0.41	6.25

• 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	13.34
1	DAC	Yes	0.43	262.44

• 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	0.43	16.64
1	DAC	Yes	0.43	326.73

• 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	0.43	21.79

• 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	0.41	6.25

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

ECC	Transfer Mode	Write speed(MiBps)	Read speed(MiBps)
Disabled	CPU	80.57	68.63
Disabled	BCDMA	144.04	143.82
enabled	CPU	75.29	68.92
enabled	BCDMA	108.63	136.20

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	23905
Code/Data not cached	54895
Code/Data not cached 1 of 10 iterations	27006

• 2) MEMCPY operation

Caching status	Cycles taken
Code/Data fully cached	1564
Code/Data not cached	5386
Code/Data not cached 1 of 10 iterations	1950

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