GPL16258VB datasheet(11/23 Pages) GENERALPLUS

11 / 23 page

GPL16258VB

Proprietary & Confidential

Nov. 24, 2016

Version: 1.0

5. FUNCTIONAL DESCRIPTIONS

5.1. CPU

The GPL16258VB is equipped with a 16-bit

’nSP™ 2.0, the

newest 16-bit microprocessor by SUNPLUS and pronounced as

micro-n-SP.

Sixteen registers are involved in

’nSP™ 2.0: R1 -

R4 (General-purpose registers), PC (Program Counter), SP (Stack

Pointer), Base Pointer (BP), SR (Segment Register) and R8 - R15

(General-purpose register).

The interrupt include three FIQs

(Fast Interrupt Request) and eight IRQs (Interrupt Request), plus

one software-interrupt, BREAK.

GPL16258VB is also built-in a

4K bytes I-cache which can increase the performance significantly.

5.2. Memory

5.2.1. Internal SRAM

The amount of SRAM is 12K-word (including Stack), ranged from

0x0000 through 0x2FFF with access speed of one CPU clock.

Since this SRAM is located in CPU’s locale bus, the system bus

will not be occupied when this SRAM is accessed by CPU.

This

SRAM can be access freely by CPU/PPU/DMA /LCD.

5.2.2. External memory

The memory space is separated into 5 banks and each bank can

be up to 256 pages with 64K words per page.

It supports up to

80M words NOR type flash memories.

Each bank can be

programmed as SDRAM/ROM/SRAM/NOR Flash/NAND Flash.

GPL16258VB can support up-to 64M bytes (512Mb) SDRAM with

single chip selection.

8-bit NAND flash is supported with an

embedded 1/4/8 bits ECC calculation circuit which recognizes the

error correction mechanism on SLC/MLC NAND flash.

5.3. PLL, Clock, Power Mode

5.3.1. PLL (Phase Lock Loop)

There are three PLLs embedded in GPL16258VB.

1st PLL can

pump up to 96MHz, 2nd PLL can generate 27MHz, and 3rd PLL

can pump 12MHz.

The output frequency of fast PLL is

programmable and has range from 15MHz ~ 96MHz (3MHz per

step).

5.3.2. System clock

The system clock can be selected from 32768 or 12M or 96M

(determined

by fast PLL’s output frequency) by register setting.

Furthermore, a clock divider which can divide clock up to 1/128 is

provided to reduce the power consumption.

5.4. Power Savings Mode

The GPL16258VB provide 4 power modes, Normal, Wait, Halt and

Sleep.

Mode

CPU

System

RTC

POWEREN

After wakeup

Normal

Wait

OFF

Next Instruction

Halt

OFF

Reset CPU

Halt2

OFF

Next Instruction

Sleep

OFF

Reset System

Enter the Wait/Halt/Halt2/Sleep mode, is done by write designated

value to designated port.

The wake-up source can be interrupt or

timer or key-change.

5.5. Picture Process Unit

GPL16258VB equips a powerful process engine which has the

following features.

Item

Features

Text

Layer

1. Maximum 4 text layers at the same time.

2. Supports text size up to 4096x4096.

3. Supports virtual 3D effect.

4. Supports Text rotate and scale effect.

5. Supports horizontal/vertical compression effect.

6. Supports horizontal movement effect.

7. Supports 64-level alpha blending.

8. Supports vertical compression under 2.5D mode.

Sprite

1. Maximum 256 sprites at the same time.

2. Maximum 4096 extended sprite at the same time.

3. Each sprite supports virtual 3D texture mapping

4. Each sprite support 64-level rotate function.

5. Each sprite supports 64-level zoom in/out function

from 1/32 to 8.75 times.

6. Each sprite supports 64-level alpha blending.

7. Each sprite supports 3 kinds of mosaic effect.

8. Supports alpha channel function.

9. All above function can combine at the same time.

Color

1. Text layer and sprites support 4/16/64/256-color

palette and RGB1555/ RGB565/ YUYV/ RGBG

bitmap mode.

2. 1024 palette entry for text layers and sprites.

3. Supports 16/24-bit level of palette index color.

Operation

Mode

1. Supports QVGA at line/frame base mode.

2. Supports VGA at line/frame base mode.

Other

Features

1. Supports light gun interface.

2. Supports sprite DMA function.

3. Supports de-flicker for TV output.

GPL16258VB Datasheet(PDF) 11 Page - Generalplus Technology Inc.

GPL16258VB Datasheet(HTML) 11 Page - Generalplus Technology Inc.

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Datasheet Download

Link URL