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Feature Phone

Welcome for using HW Feature Phone FAQ, all sub categories are listed as below

MT6260

[FAQ04965][ABB Charger]VDRV引脚上的mos可否拿掉

[DESCRIPTION]

VDRV引脚上的mos可否拿掉

[SOLUTION]

VDRV引脚上加nmos是为保护该引脚不被高电压损坏,60上严禁拿掉该mos器件

[FAQ04966][ABB Driver]Kpled电流大小[DESCRIPTION]

KPled电流范围是多少?调整范围有哪些?

[SOLUTION]

Kpled电流为60mA,寄存器上无法调整,只有开和关。但用于Kpled的PWM占空比可以调整(0%,50%,100%)

因此Kpled实际电流可以为30mA和60mA。

[FAQ05271][ABB QA]internal 32k 时VRF电源是否长开

[DESCRIPTION]

internal 32k ,VRF 为26m 供电,所以在关机模式VRF 也有输出?对吗?[SOLUTION]

Yes, VTCXO merge into VRF , VRF行為同6250上的CTCXO

[FAQ05270][ABB QA]LDO电源VBT与VTCXO [DESCRIPTION]

LDO 没有了VBT 以及VTCXO ,那这些模块由什么电源供电?

[SOLUTION]

VTCXO merge into Vrf. Vrf LDO(E2)= power input pin for RF VBT merge to VIO28, VIO28 LDO(U8)= power input pin for BT

[FAQ05269][ABB QA]sink 是否可以单独开关控制[DESCRIPTION]

Isink 是否可以单独开关控制?是否可以分别配置不同的电流档位?比如ISINK0=24MA,ISNK1=16MA

[SOLUTION]

每個Channel可獨立on/off @register mode, 及配置不同的电流档位.但@ PWM mode,只有1個PWM 只能有一個duty.

[FAQ05272][ABB QA]VCORE输出电压范围[DESCRIPTION]

VCORE输出电压下限为0.75V?减小的考虑是?

[SOLUTION]

VCORE的输出范围为0.75V-1.35V,主要是基于low power的考虑,对应用方面没有影响

[FAQ05651][ABB QA]VIBR的输出电压是否有

1.3V的Setp?

Q:VIBR的输出电压是否有1.3V的Setp?

A:目前60上面是没有1.3V的step,VIBR只有1.8,2.8,3.0V三个step,默认输出电压是2.8V。

所以贵司在选择vibrator的时候,还请注意额定电压的范围。

[FAQ05437][Audio QA]Class-K 的输出为什么不是方波?怎么区分Class-K和Class-AB

Q:Class-K 的输出为什么不是方波?怎么区分Class-K和Class-AB

A:有一个前提很重要:我们的Class-K=Class-AB + Charge pump而不是传统的Class-K=Class-D+ Charge pump;

有了这一个前提,就很好理解为什么Class-K的输出不是方波了。

至于怎么区分是哪一种模式,有几种办法:

1,请看原理图上面是否有连接开关电容,如果没有,那么一定就是Class-AB了,如果有,也就是按照我们reference design 进行的设计;

2,请把VBAT的电压降到4V一下,ex.3.8V同时设定analog gain 比较大(160),然后又三种办法可以测试:

a,测试一下VBOOST,您可以看到VBOOST的电压在4.2V左右,

b,测试FLYP/N这个时候您可以测试到一个方波,频率在600KHz,

c,直接测试SPKP-SPKN的电压,这个时候您可以看到输出电压的峰峰值可以超过2*VBAT。

最后还有一点需要提醒:SW的版本请升级到MP的版本。

[FAQ05069][Audio QA]如果不用Class-K的话,可以省掉那些器件

Q:如果不需要用到internal Class-K,但是想用Class-AB的话,是否可以省掉大电容?

A:是的,如果只需要用Class-AB的话,可以不需要大电容,具体的解法如下:

K1,K2,L2 pin请悬空,L3,M3(VBAT Pin) pin 请直接连接到VBAT,K4 pin 直接接地。

[FAQ05164][DBB Camera]1/2 data Serial Camera Interface 设计

[DESCRIPTION]

MT6260 1/2 data Serial Camera Interface 设计

[SOLUTION]

1. MT6260 Can support 1/2 data Serial Camera

BB 端CMCSD 只接SPI data0,

BB 端CMCSD1 只接SPI data1,

两data 之间不能互换接。

MTK_ONLINE_FAQ_HW

2. MT6260 Can Support 2.8v/1.8v Serial Camera.

1) 2.8V Serial Camera interface

MTK_ONLINE_FAQ_HW

2) 1.8V Serial Camera interface

MTK_ONLINE_FAQ_HW

[FAQ05073][DBB LCM] 1/2 data Serial LCM Interface 设计

[DESCRIPTION]

MT6260 1/2 data Serial LCM Interface 设计

[SOLUTION]

1. 6260 Can support 1.8v/

2.8v Serial LCM

1) 1.8v Serial LCM Interface

MTK_ONLINE_FAQ_HW

2) 2.8V Serial LCM Interface

MTK_ONLINE_FAQ_HW

2. MT6260 Can Support 2 data Serial LCM 1) 1.8V Serial LCM

LSDA0(GPIO38) 接data0

LSA0DA0(GPIO36)接data1

2) 2.8V Serial LCM

LSDA1(GPIO53) 接data0,

LSA0DA1(GPIO51) 接data1

3. 3/4 line 的区分:

对于BB而言所谓三线:SDO,SCL,CS

对于BB而言所谓四线:SDO,SCL,RS,CS 对于SPI而言所谓三线:SDI,SCL,CS

对于SPI而言所谓四线:SDI,SDO, SCL,CS

[FAQ05070][DBB LCM]8bit Parallel Interface LCM design notice

[DESCRIPTION]

MT6260 8bit Parallel Interface LCM design notice

[SOLUTION]

6260 Support 8/9 bit CPU Parallel Interface LCM(1.8V IO level),

接8bit LCM ,MT6260 端由低接到高位即data[0:7],

如果接错成60 data[2:9],软件无法切换上下8位。

注意的是Module端不是这样的,这个要按照Driver IC的Spec来做。

[FAQ05075][DBB LCM]MT6260 Serial LCM 能支持到多大分辨率?帧率多少?

[DESCRIPTION]

MT6260 Serial LCM 能支持到多大分辨率?帧率多少?

[SOLUTION]

1. Serial 1-data Support 到QCIF+,

2. Serial 2- data Support 到QVGA ,

3. 两者帧率都是30fps .

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