80-0206-R Datasheet, PDF (7/49 Pages) List of Unclassifed Manufacturers – Speech Recognition Processor

Data Sheet
Reference Schematics
RSC-4128
Schematic 1-1:
RSC-4128, Utilizing On-chip ROM and Optional External Serial Data Memory
JP1
1
Recommended Diagnostic Output Port
2
3
4
Vdd
P0.1
P1.4
Vdd
C2
.1
Vdd
C5
.1
3.58MHz
Y1
Vdd
C7
C8
12pF
12pF
C9 _.1
R1
100K
D5
1N4148
C11
.1
1
2
3
4
P0.0
D7
D6
5 ^PDN
6
7
8
9
D5
D4
GND
GND
10
11
12
13
14
XO1
XI1
Vdd
Vdd
-XM
15
16
17
XO2
XI2
D3
18
19
20
21
22
D2
P2.7
D1
D0
GND
23
24
25
26
GND
Vdd
Vdd
P2.6
27 ^{reserv ed}
28
29
P2.5
reserv ed
-RESET
C1
2.2uF
C3
2.2uF
NOTE 4
Optional
Vdd
D1
D2
1N4148
1N4148
D3
1N4148
D4
1N4148
RSC-4128-die
U2
P0.7
A7
A8
81
80
79
78
P1.0 ₇₇
A9
Vdd
Vdd
GND
76
75
74
73
GND
A10
P1.1
A11
P1.2
72
71
70
69
68
A12
P1.3
A13
P1.4
A14
P1.5
A15
Vdd
67
66
65
64
63
62
61
60
Vdd
GND
GND
P1.6
59
58
57
56
A16 ₅₅
P1.7
A17
PLLEN
54
53
NOTE 5
Optional
Vdd
C6
.1
P1.4
Vdd
C10
.1
LS1
SPEAKER
AT45DB041B
4
3
2
1
-CS
-RST
SCK
SI
-WP
VCC
GND
5
6
7
8
SO
U1
Optional
Vdd FLASH
C4
.1
Vdd
Vdd FLASH
AVDD
BT1
3V
C12
.1
R3
1.8K NOTE 6
X1
MICROPHONE
C18
3300pF
NOTE1
NOTE2
Recommended
NOTE 5
AVDD
D6
1N4148
2.2uF
C14
C13
.1
R2
270
NOTE 7
AVDD
C16
.1
R4
NOTE3 ^C17
510 C19
D7
.01
1N4148
.1 C20
220uF
NOTE 7
C21 C22
.1 1uF
Vdd
C15
.1
NOTES:
1. Optional. This capacitor MAY reduce noise coupled into the mic input on a noisy
PCB.
2. If used, this capacitor MUST be placed close to the RSC-4128 AGND and MIC1IN pads.
3. Place close to MICIN1.
4. These capacitors may be used to reduce high frequency response. The tradeoff is
reduced amplitude.
5. For reducing system ESD susceptibility.
6. Typical value. Refer to Sensory Design Note 80-0259 "Selecting a Microphone" to
determine proper value for your application
7. SETTING RESISTOR AND CAPACITOR VALUES IN THE MICROPHONE POWER LINE FILTER CIRCUIT:
The capacitor value should be between 220 and 30 ufd.
The resistor value should be between 300 and 2000 ohms.
Within these ranges;
Select the largest capacitor consistent with other constraints (cost, size,etc.)
For this capacitor, select a resistor such that the RC time constant is ~60msec.
* Refer to Sensory Design Note 80-0073 "Speech Recognition Hardware Design" for
information on proper microphone selection and housing design, PCB layout, as well as
test and evaluation procedures to verify proper design and operation.
* Sensory offers a FREE Design Review Service. Detatils of this service are also
included in 80-0073.
7
P/N 80-0206-R
© 2006 Sensory Inc.