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| − | === BUG ALL_01: Footprint del filtre USB erroni===
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| − | '''INFO:''' Aquesta errata provoca que tots els USB tinguin les senyals de dades diferencials curtcircuitades
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| − | '''Afecta a:''' L41, L42, L43, L44, L51, L52, L53
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| − |
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| − | '''Workaround:''' No muntar les referencies i substituir els components muntats per resistències de 0R en el doble raster.
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| − | ----
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| − |
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| − | === BUG ALL_02: Muntar la referencia R1014. Necessari perquè el USB OTG del OMAP actuí com a HOST ===
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| − |
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| − | ----
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| − |
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| − | === BUG ALL_03: LDO U4, la senyal 4V < 4V (quan la senyal POWER5V=5V) ===
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| − | '''INFO:''' Aquesta errata provoca que la tensió VGSM pels mòdem Quectel M10 sigui massa baixa i fen que es penji. '''No s'ha testejat en els UC15 i UC20'''.
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| − | '''Workaround:''' EL problema prove perquè no es compleix: U4:VDD > U4:VOUT + 1V5. Per millorar la tensió de sortida no s'utilitza el D0 muntant la R100.
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| − |
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| − | ----
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| − |
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| − | === BUG LITE2G_01: No muntar les referencies R645 i R646===
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| − | '''INFO:''' El modem M10 no disposa de les línies USB que els seus models superiors si disposen. Cal desmuntar aquestes resistències perquè el USB Hub no doni missatges d'error
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| − | ----
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| − |
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| − | === BUG ALL_04: L'altaveu M7 és poc sonor ===
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| − | '''INFO:''' La sortida màxima del amplificador són 250 mw (3v3) O 350 mW (5V) utilizant un altaveu de 8 ohms i un màxim de 0.5W.
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| − | Canvis per millorar el comportament del altaveu: canviar la alimentació 3V3 per a 5VUP
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| − | Modificar el valor de la resistencia R767 de 47K a 100K
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| − | Tenir en compte de configurar la sortida Headset a 6dB
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| − | '''Millores poc importants, no tenir en compte per a un nou muntatge'''
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| − | ----
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| − |
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| − | === BUG ALL_05: Els USBs: 5, 6 i 7 queda afectada la seva alimentació temporalment quan es retira el JACK POWER ===
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| − | '''INFO:''' Aquest fet provoca en alguns casos prova un kernel panic
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| − | '''WORKAROUND:''' Power jack cannot control Step-up (U5)
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| − | - R107 mount 0R
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| − | - R143, R149 not mount
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| − | ----
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| − |
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| − | === BUG ALL_06: R149 = 0R passar a R149 = 2K2 ===
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| − | '''INFO:''' '''Canvis nomes aplicats al protos lite (17/07/2014)-> No tenir en compte aquest BUG: veure BUG ALL_05'''
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| − | ----
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| − |
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| − | === BUG ALL_07: R160 lower value ===
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| − | '''INFO:''' Led color vermell poca intensitat perque alimentat a 1v8 (ennloc de 5v) i la resistencia R160=150 es massa gran (en comparacio al led verd a 5v i R161=150)
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| − | '''WORKAROUND:'''
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| − | - R152: 220R
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| − |
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| − | - R160: 47R
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| − | - R161: 1K
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| − | ----
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| − |
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| − | === BUG LITE3G_01: Muntar resistència R648 ===
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| − | '''INFO:''' Necessari per alimentar el USB_VBUS del modem UC15 amb 5VUP
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| − | ----
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| − |
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| − | === BUG FULL_01: Muntar resistència R648 ===
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| − | '''INFO:''' Necessari per alimentar el USB_VBUS del modem UC20 amb 5VUP
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| − | ----
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| − |
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| − | === BUG FULL_02: Add R1050 ===
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| − | '''INFO:''' Alimentat VBUS (pin J4:32 del IGEP COM MODULE) amb 5VBUS
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| − | ----
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| − |
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| − | === BUG ALL_08: LED 7 is green (not red) ===
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| − | '''INFO:''' PCB silkscreen is misplaced
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| − | ----
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| − |
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| − | === BUG FULL_03: SPEAKER extern no es pot activar ===
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| − | '''INFO:'''
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| − | '''Quan SDN=1:'''
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| − | Switch LINE_in
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| − | OUTPUT audio speaker AMP enable
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| − | '''Quan SDN=0:'''
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| − | Switch AMP
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| − | OUTPUT audio speaker AMP disable
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| − | '''WORKAROUND:''' Use lite assembly:
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| − | - U71, C758 not mount
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| − | - R763, R765 mount
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| − | ----
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| − |
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| − | === BUG FULL_04: Optional input amplifier: two high pass band filter in series ===
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| − | '''INFO:''': Optional input amplifier cannot amplify the input JA1 mic signal enough, because there are two high pass band filter in series
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| − | '''PROPOSED SOLUTION (NOT TESTED YET, with CIRRUS ICs):'''
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| − | - C704, C705 use 0R resistor
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| − | - R718, R716 not mount
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| − | - Optional: C716, C714 not mount
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| − | '''Don't take care of this bug see BUG FULL_05'''
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| − | ----
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| − |
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| − | === BUG FULL_05: Optional input amplifier: gain is too low ===
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| − | '''INFO:''': Gain from NFM2173 isn't enough for a MIC audio
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| − | '''WORKAROUND:''' Use PMIC MICs as a dedicated input for a JA1 connector: disable optional input amplifier, input audio switch and cirrus U81 ADC1 and ADC2:
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| − | - C704, C705 not mount
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| − | - R718, R716 not mount
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| − |
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| − | - R737, R738 not mount
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| − | - R705, R708 mount
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| − | - R870, R871, R872, C889, C890 mount
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| − | - R800 mount
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| − | - R802 no mount
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| − |
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| − | '''RESULT:'''
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| − | - JA1: PMIC MIC IN
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| − |
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| − | - JA2-6: CIRRUS
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| − |
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| − | ----
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| − |
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| − | === BUG ALL_09: OMAP will have more priority over USB HUBs===
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| − | '''INFO:''' Change value to the following resistors:
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| − | - ALL: R508, R511, R514: 0R
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| − | - FULL: R406, R409, R412, R415: 0R
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| − |
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| − | '''USB PWR GPIOS must be set as input, test bot assemblies with patch software'''
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