D8M resolution&frame rate setting - Revision history

Dongliu at 09:53, 18 April 2017

2017-04-18T09:53:54Z

← Older revision		Revision as of 09:53, 18 April 2017
Line 20:		Line 20:
	In this demo we configure camera SCLK to 150MHz		In this demo we configure camera SCLK to 150MHz

-	HTS: Horizontal total size	+	HTS: Horizontal total size
		+
	VTS: Vertical total size		VTS: Vertical total size
	fps = 150M / HTS/VTS		fps = 150M / HTS/VTS

Dongliu at 09:52, 18 April 2017

2017-04-18T09:52:16Z

← Older revision		Revision as of 09:52, 18 April 2017
Line 7:		Line 7:
	In the demo, we use camera '''auto size''' figure to easily modify the camera resolution: just modify 0x3808~0x380B four registers.		In the demo, we use camera '''auto size''' figure to easily modify the camera resolution: just modify 0x3808~0x380B four registers.

-	//For example: 640x480	+	For example: 640x480

	[[File:D8M_register_2.png]]		[[File:D8M_register_2.png]]
Line 21:		Line 21:

	HTS: Horizontal total size		HTS: Horizontal total size
-	VTS: Vertical total size	+	VTS: Vertical total size
	fps = 150M / HTS/VTS		fps = 150M / HTS/VTS

	Take setting 640x480@60fps as example:		Take setting 640x480@60fps as example:

-	// 60 fps (combined with pll settings)	+	60 fps (combined with pll settings)

	[[File:D8M_frame_rate_2.png]]		[[File:D8M_frame_rate_2.png]]

-	fps = 150,000,000/0x1200/0x021E	+	fps = 150,000,000/0x1200/0x021E
	= 150,000,000/4608/542		= 150,000,000/4608/542
	≈ 60		≈ 60
	Note： Horizontal blanking = HTS - Horizontal output width		Note： Horizontal blanking = HTS - Horizontal output width
		+

	As the camera mipi lvds data is processed by MIPI parallel Bridge IC, it will be limited by mipi parallel internal Linebuffer length, then, customer can try to set HTS value as larger as possible ( on condition that VTS value is still meet your requirement) to make a longer H blanking to reduce peak bandwidth requirements.		As the camera mipi lvds data is processed by MIPI parallel Bridge IC, it will be limited by mipi parallel internal Linebuffer length, then, customer can try to set HTS value as larger as possible ( on condition that VTS value is still meet your requirement) to make a longer H blanking to reduce peak bandwidth requirements.

Dongliu at 09:49, 18 April 2017

2017-04-18T09:49:35Z

← Older revision		Revision as of 09:49, 18 April 2017
Line 1:		Line 1:
-	'''How to modify D8M resolution'''	+	'''1. How to modify D8M resolution'''

	Modify camera registers:		Modify camera registers:
		+
	[[File:D8M_register_1.png]]		[[File:D8M_register_1.png]]
		+
	In the demo, we use camera '''auto size''' figure to easily modify the camera resolution: just modify 0x3808~0x380B four registers.		In the demo, we use camera '''auto size''' figure to easily modify the camera resolution: just modify 0x3808~0x380B four registers.

	//For example: 640x480		//For example: 640x480
		+
	[[File:D8M_register_2.png]]		[[File:D8M_register_2.png]]

Line 11:		Line 14:


-	'''How to modify D8M frame rate'''	+	'''2. How to modify D8M frame rate'''

	[[File:D8M_frame_rate_1.png]]		[[File:D8M_frame_rate_1.png]]
		+
	In this demo we configure camera SCLK to 150MHz		In this demo we configure camera SCLK to 150MHz

Line 32:		Line 36:

	As the camera mipi lvds data is processed by MIPI parallel Bridge IC, it will be limited by mipi parallel internal Linebuffer length, then, customer can try to set HTS value as larger as possible ( on condition that VTS value is still meet your requirement) to make a longer H blanking to reduce peak bandwidth requirements.		As the camera mipi lvds data is processed by MIPI parallel Bridge IC, it will be limited by mipi parallel internal Linebuffer length, then, customer can try to set HTS value as larger as possible ( on condition that VTS value is still meet your requirement) to make a longer H blanking to reduce peak bandwidth requirements.
		+



	[[D8M TopPage\|back]]		[[D8M TopPage\|back]]

Dongliu at 09:46, 18 April 2017

2017-04-18T09:46:14Z

← Older revision		Revision as of 09:46, 18 April 2017
Line 1:		Line 1:
	'''How to modify D8M resolution'''		'''How to modify D8M resolution'''
-	~~Modify camera registers:~~

-	In the demo, we use camera auto size figure to easily modify the camera resolution: just modify 0x3808~0x380B four registers.	+	Modify camera registers:
		+	[[File:D8M_register_1.png]]
		+	In the demo, we use camera '''auto size''' figure to easily modify the camera resolution: just modify 0x3808~0x380B four registers.

	//For example: 640x480		//For example: 640x480
-	~~register~~	+	[[File:D8M_register_2.png]]
-	~~value~~	+
-	~~description~~	+
-	~~0x3808~~	+
-	~~0x02~~	+
-	~~X output size H~~	+
-	~~0x3809~~	+
-	~~0x80~~	+
-	~~X output size L~~	+
-	~~0x380a~~	+
-	~~0x01~~	+
-	~~Y output size H~~	+
-	~~0x380b~~	+
-	~~0xE0~~	+
-	~~Y output size L~~	+

-	~~'''How to modify D8M frame rate'''~~


		+
		+	'''How to modify D8M frame rate'''
		+
		+	[[File:D8M_frame_rate_1.png]]
	In this demo we configure camera SCLK to 150MHz		In this demo we configure camera SCLK to 150MHz

Line 33:		Line 23:

	// 60 fps (combined with pll settings)		// 60 fps (combined with pll settings)
-	~~register~~	+
-	~~value~~	+	[[File:D8M_frame_rate_2.png]]
-	~~description~~	+
-	~~0x380c~~	+
-	~~0x12~~	+
-	~~HTS H~~	+
-	~~0x380d~~	+
-	~~0x00~~	+
-	~~HTS L~~	+
-	~~0x380e~~	+
-	~~0x02~~	+
-	~~VTS H~~	+
-	~~0x380f~~	+
-	~~0x1E~~	+
-	~~VTS L~~	+
	fps = 150,000,000/0x1200/0x021E		fps = 150,000,000/0x1200/0x021E
	= 150,000,000/4608/542		= 150,000,000/4608/542

Dongliu at 09:40, 18 April 2017

2017-04-18T09:40:33Z

← Older revision		Revision as of 09:40, 18 April 2017
Line 57:		Line 57:


-	[[D8M\|back]]	+	[[D8M TopPage\|back]]

Dongliu at 09:39, 18 April 2017

2017-04-18T09:39:48Z

← Older revision		Revision as of 09:39, 18 April 2017
Line 54:		Line 54:

	As the camera mipi lvds data is processed by MIPI parallel Bridge IC, it will be limited by mipi parallel internal Linebuffer length, then, customer can try to set HTS value as larger as possible ( on condition that VTS value is still meet your requirement) to make a longer H blanking to reduce peak bandwidth requirements.		As the camera mipi lvds data is processed by MIPI parallel Bridge IC, it will be limited by mipi parallel internal Linebuffer length, then, customer can try to set HTS value as larger as possible ( on condition that VTS value is still meet your requirement) to make a longer H blanking to reduce peak bandwidth requirements.
		+
		+
		+
		+	[[D8M\|back]]

Dongliu: Created page with "'''How to modify D8M resolution''' Modify camera registers: In the demo, we use camera auto size figure to easily modify the camera resolution: just modify 0x3808~0x380B four r..."

2017-04-18T09:38:50Z

Created page with "'''How to modify D8M resolution''' Modify camera registers: In the demo, we use camera auto size figure to easily modify the camera resolution: just modify 0x3808~0x380B four r..."

New page

'''How to modify D8M resolution'''
Modify camera registers:

In the demo, we use camera auto size figure to easily modify the camera resolution: just modify 0x3808~0x380B four registers.

//For example: 640x480
register
value
description
0x3808
0x02
X output size H
0x3809
0x80
X output size L
0x380a
0x01
Y output size H
0x380b
0xE0
Y output size L

'''How to modify D8M frame rate'''

In this demo we configure camera SCLK to 150MHz

HTS: Horizontal total size
VTS: Vertical total size
fps = 150M / HTS/VTS

Take setting 640x480@60fps as example:

// 60 fps (combined with pll settings)
register
value
description
0x380c
0x12
HTS H
0x380d
0x00
HTS L
0x380e
0x02
VTS H
0x380f
0x1E
VTS L
fps = 150,000,000/0x1200/0x021E
= 150,000,000/4608/542
≈ 60
Note： Horizontal blanking = HTS - Horizontal output width

As the camera mipi lvds data is processed by MIPI parallel Bridge IC, it will be limited by mipi parallel internal Linebuffer length, then, customer can try to set HTS value as larger as possible ( on condition that VTS value is still meet your requirement) to make a longer H blanking to reduce peak bandwidth requirements.