Daryl SielaffDaryl Sielaff Ben McQuistonBen McQuistonWill McKennaWill McKenna David David

HartmanHartman

Functional Blocks Functional Blocks and FMECA Chart and FMECA Chart

Schematic Block A: Schematic Block A: PowerPower

C 1 31 0 u F

C 1 44 7 u F

C 1 54 7 u F

V I N3

GN

D1

V O U T2

U 1 1

F A N 1 1 1 2 - 1 . 2 V 1 A L D O re g u la t o r

V a d j4

V o2

V in1

GN

D3

U 1 2

K A 2 7 8 R 0 5 C - 5 V 2 A L D O re g u la t o r

V d is4

V o2

V in1

GN

D3

U 1 3

K A 7 8 R 3 3 C - 3 . 3 V 1 A L D O re g u la t o r

A _ V D D

V D D I N T

V D D E XT

5 V o lt A _ A m p

V D D

A D D C O N N E C TO R H E R E

C 1 01 0 u F

C 1 12 2 u F

C 1 21 0 u F

FMECA ChartFMECA ChartFailu

re No.

Failure Mode Possible Causes Failure Effects Method of Detection

Criticality Remarks

A1Output = 0V

Short to ground or any

component in A

Audio Amp fails to work, LCD fails

to operate properly, short could lead to overheating

Observation HighOverheating could cause

fire or sparks

A2

Output > 5VFailure of 5V

regulator

Could damage audio amplifier or

LCDObservation Low

Regulators have shut off if voltage reaches unsafe values

A3

Output > 3.3VFailure of 3.3V

regulatorCould damage mC

or data busObservation Low

Regulators have shut off if voltage reaches unsafe values

A4

Output > 1.2VFailure of 1.2V

regulatorPotential damage

to mC coreObservation Low

Regulators have shut off if voltage reaches unsafe values

A5Output out of

Tolerance

Failure of any of the bypass capacitors

Logic levels not properly achieved

Observation Low

/ W R/ R D

AD0AD1

AD4AD5AD6AD7

AD2AD3

R 1 1

1 M R 1 21 0 0

C 5

2 2 p F

C 1 6

2 2 p F

Y 2

1 2 M H z

D 01 8

D 11 9

D 22 0

D 32 1

D 42 3

D 52 4

D 62 5

D 72 6

V D D 18

G N D1 1

R D4

W R5

C S6

D A C K2

D R Q3

A 01

D A TA +9

D A TA -1 0

C L K / X11 3X21 4

R S T1 5

M / S2 7

I N TR Q1 6

C M7

U 1 4

S L 8 1 1 H S

V D D

R 1 31 0 K

R 1 4 1 0 K

1234

J 3

U S B C o n n e c t o r

C S 2

Schematic Block B: USBSchematic Block B: USB

FMECA ChartFMECA ChartFailure

No.Failure Mode Possible Causes Failure Effects Method of

DetectionCriticality Remarks

B1

USB drive not recognized

Any part of the USB module fails,

software

Cannot complete file

conversions or access existing IMS or MIIDI

files

Observation Low

Nothing of significance

happens if the USB is not recognized

B2Unable to

write to USB drive

Failure of external memory, data bus,

or software

Cannot store IMS or MIDI

files back onto USB drive

Observation LowStill able to

actually hear audible music

R 1 7 1 M e g

RPG

2468

1 01 21 4

135791 11 3

J 2

J TA G H E A D E R 7 X2

C L K C F G 02

C L K C F G 13

XTA L1 4 3

C L K I N1 4 2

C L K O U T1 3 4

A L E4 0

B O O TC F G 04

B O O TC F G 15

S P I C L K1 2 5

R E S E T1 2 1

S P I D S1 2 2

M O S I1 2 7 M I S O1 2 6

TD I1 3 7TR S T1 3 8TC K1 3 9TM S1 4 0

R D3 9

W R3 5

E M U1 3 5

TD O1 3 6

A D 03 4

A D 13 3

A D 23 0

A D 32 9

A D 42 6

A D 52 5

A D 62 4

A D 71 7

A D 85 2

A D 95 1

A D 1 05 0

A D 1 14 9

A D 1 24 6

A D 1 34 3

A D 1 44 2

A D 1 54 1

D A I _ P 1 (S D 0 A )5 3

D A I _ P 2 (S D 0 B )5 6

D A I _ P 3 (S C L K 0 )5 7

D A I _ P 4 (S F S 0 )6 2

D A I _ P 5 (S D 1 A )6 3

D A I _ P 6 (S D 1 B )6 4

D A I _ P 7 (S C L K 1 )6 5

D A I _ P 8 (S F S 1 )7 0

D A I _ P 9 (S D 2 A )7 1

D A I _ P 1 0 (S D 2 B )7 7

D A I _ P 1 1 (S D 3 A )7 8

D A I _ P 1 2 (S D 3 B )7 9

D A I _ P 1 3 (S C L K 2 3 )8 0

D A I _ P 1 4 (S F S 2 3 )8 1

D A I _ P 1 5 (S D 4 A )8 2

D A I _ P 1 6 (S D 4 B )8 6

D A I _ P 1 7 (S D 5 A )8 7

D A I _ P 1 8 (S D 5 B )8 8

D A I _ P 1 9 (S C L K 4 5 )8 9

D A I _ P 2 0 (S F S 4 5 )9 4

F L A G 01 5

F L A G 11 6

F L A G 29 7

F L A G 39 8

U 1

A D S P -2 1 2 6 2

Y 3

1 2 . 5 M H z C 1 7

. 0 1 u F

C 1 8

. 0 1 u F

/ R D/ W R

V D D

R 5

4 . 7 K

S W 1

LCD

S W 2

+5 V

V D D

Schematic Block C: Schematic Block C: MicroMicro

Failure No.

Failure Mode

Possible Causes Failure EffectsMethod of Detection

Criticality

Remarks

C1Continual Output of logic low

Failure of mC, or any components associated with it

Data bus no longer providing reliable data, LCD output

unpredictable

Observation Low

C2Continual output of logic high

Failure of mC or any components associated with it

Unreliable data bus, LCD output

unpredictableObservation Low

C3 Image file not

processed correctly

Software, failure of data bus

transmission

If IMS created, not valid with matching

imageObservation Low

Music played will not match

sheet music

C4 IMS file improperly

converted to MIDI

Software, failure of data bus

transmission

MIDI will not match image

Observation LowMusic played will not match

sheet music

FMECA ChartFMECA Chart

I 02

I 13

I 24

C S 11 2

C S 21 3

C S 31 4

I / C L K1

U 1 0

1 6 V 8

A 01 1

A 11 0

A 29

A 38

A 47

A 54 8

A 64 7

A 74 6

A 84 5

A 94 4

A 1 03 8

A 1 13 7

A 1 23 6

A 1 33 5

A 1 43 4

A 1 52 1

A 1 62 0

A 1 71 9

A 1 81 8

A 1 91 7

A 2 03 9

I / O 02 2I / O 12 4I / O 23 1I / O 33 3I / O 44 9I / O 55 1I / O 64I / O 76

C E 11 3C E 21 6

W E1 5

O E4 2

D N U4 0

U 9

CY

7C

10

69A

V3

3

C S 2C S 3

A D 1A D 0

A D 4A D 3A D 2

A D 6A D 5

A D 9A D 8A D 7

A D 1 2A D 1 1A D 1 0

A D 1 4A D 1 3

/ W R/ R D

A D 1 5

A L E

O 02

O 13

O 25

O 36

O 48

O 59

O 61 1

O 71 2

O 81 3

O 91 4

O 1 01 6

O 1 11 7

O 1 21 9

O 1 32 0

O 1 42 2

O 1 52 3

I 04 7

I 14 6

I 24 4

I 34 3

I 44 1

I 54 0

I 63 8

I 73 7

I 83 6

I 93 5

I 1 03 3

I 1 13 2

I 1 23 0

I 1 32 9

I 1 42 7

I 1 52 6

O E 11

O E 22 4L E 1

4 8

L E 22 5

U 8

74

VC

XH

16

37

3

Schematic Block D:Schematic Block D: External Memory External Memory

AD0AD1

AD4AD5AD6AD7

AD2AD3

/ W R/ R D

C 3 2 . 2 n F

C 4. 2 2 n F

R 69 1 K

R 7 5 1 K

R 8 3 . 3 K

D 02 7

D 12 6

D 22 5

D 32 4

D 42 3

D 52 2

D 62 1

D 72 0

W R2 8 R D3 1

C S2 9

A 03 0

E Q 11 2

E Q 21 3

E Q 31 4

L E D2

M TR1 9

I R Q3

R S T4

TE S T5

C L K I1

P L L C6

V R E F9

H P O U T-L1 0

H P O U T-R1 1

S P O U T11 7

S P O U T21 8

U 6

W 5 6 9 6 4

C 6 . 1 u F

C 7 1 u F

V D D

C 8

. 1 u F

C 94 . 7 u F

C S 3

Schematic Block E:Schematic Block E:Audio ChipAudio Chip

D1Data not properly stored or accessed in/from external

memory

Timing failure, bus fighting,

Cannot access IMS for

conversion or MIDI for playback

Observation LowUnpredictable results in this failure case

D2Accessing incorrect

chips for given instructions

Failure of chip select PLD

Bus fighting, cannot do anything

significant with any chip

Observation Low

Nothing significant can be produced in this situation

E1

No audio outAny part of audio

blockUnable to hear desired music

Observation Low

E2Distorted or noisy

audio out

Noisy power signal, speaker

damage, failure of audio amp

Unable to interpret desired

musicObservation Low

E3Uncontrollably

loud output

Unpredictable audio amplifier

behavior

Harm to user, unable to hear

musicObservation High

Hearing loss possible

FMECA ChartFMECA Chart

R 1 7 1 M e g

RPG

2468

1 01 21 4

135791 11 3

J 2

J TA G H E A D E R 7 X2

C L K C F G 02

C L K C F G 13

XTA L1 4 3

C L K I N1 4 2

C L K O U T1 3 4

A L E4 0

B O O TC F G 04

B O O TC F G 15

S P I C L K1 2 5

R E S E T1 2 1

S P I D S1 2 2

M O S I1 2 7 M I S O1 2 6

TD I1 3 7TR S T1 3 8TC K1 3 9TM S1 4 0

R D3 9

W R3 5

E M U1 3 5

TD O1 3 6

A D 03 4

A D 13 3

A D 23 0

A D 32 9

A D 42 6

A D 52 5

A D 62 4

A D 71 7

A D 85 2

A D 95 1

A D 1 05 0

A D 1 14 9

A D 1 24 6

A D 1 34 3

A D 1 44 2

A D 1 54 1

D A I _ P 1 (S D 0 A )5 3

D A I _ P 2 (S D 0 B )5 6

D A I _ P 3 (S C L K 0 )5 7

D A I _ P 4 (S F S 0 )6 2

D A I _ P 5 (S D 1 A )6 3

D A I _ P 6 (S D 1 B )6 4

D A I _ P 7 (S C L K 1 )6 5

D A I _ P 8 (S F S 1 )7 0

D A I _ P 9 (S D 2 A )7 1

D A I _ P 1 0 (S D 2 B )7 7

D A I _ P 1 1 (S D 3 A )7 8

D A I _ P 1 2 (S D 3 B )7 9

D A I _ P 1 3 (S C L K 2 3 )8 0

D A I _ P 1 4 (S F S 2 3 )8 1

D A I _ P 1 5 (S D 4 A )8 2

D A I _ P 1 6 (S D 4 B )8 6

D A I _ P 1 7 (S D 5 A )8 7

D A I _ P 1 8 (S D 5 B )8 8

D A I _ P 1 9 (S C L K 4 5 )8 9

D A I _ P 2 0 (S F S 4 5 )9 4

F L A G 01 5

F L A G 11 6

F L A G 29 7

F L A G 39 8

U 1

A D S P -2 1 2 6 2

Y 3

1 2 . 5 M H z C 1 7

. 0 1 u F

C 1 8

. 0 1 u F

/ R D/ W R

V D D

R 5

4 . 7 K

S W 1

LCD

S W 2

+5 V

V D D

Schematic Block F: LCDSchematic Block F: LCD

F

F

FMECA ChartFMECA Chart

F1LCD not

functioning properly

Failure of any connections to mC, software

Backlight off or too bright,

no way to navigate menu

Observation HighLCD backlight

could overheat and lead to burns

F2Pushbuttons or RPG have no

effect

Failure of connections to mC, software

Cannot navigate menu

Observation Low