rsc-4128 ETC-unknow, rsc-4128 Datasheet - Page 7

• Manufacturer Part Number: rsc-4128
• Description: Speech Recognition Processor
• Manufacturer: ETC-unknow

Data Sheet
Reference Schematics
7
100K
R1
Vdd
C11
.1
X1
MICROPHONE
1N4148
D5
Recommended Diagnostic Output Port
1.8K
R3
C7
12pF
3.58MHz
Y1
NOTE 6
3300pF
12pF
NOTE1
NOTE2
RSC-4128, Utilizing On-chip ROM and Optional External Serial Data Memory
C8
C18
Vdd
Recommended
NOTE 5
C9 .1
R4
510
C5
JP1
1
2
3
4
.1
C19
.01
Vdd
1N4148
P0.1
P1.4
AVDD
1N4148
D6
D7
NOTE3
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
1
2
3
4
5
6
7
8
9
.1
2.2uF
C13
C17
NOTE 7
P0.0
D7
D6
PDN
D5
D4
GND
GND
XO1
XI1
Vdd
Vdd
-XM
XO2
XI2
D3
D2
P2.7
D1
D0
GND
GND
Vdd
Vdd
P2.6
reserv ed
P2.5
reserv ed
-RESET
Vdd
220uF
C20
NOTE 7
C2
.1
C14
R2
270
.1
C21
.1
Schematic 1-1:
P/N 80-0206-R
C22
1uF
RSC-4128-die
AVDD
U2
C16
.1
NOTE 4
Optional
2.2uF
2.2uF
Vdd
.1
C1
C3
C15
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.
* 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.
PLLEN
Within these ranges;
GND
GND
GND
GND
P0.7
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
Vdd
Vdd
A10
A11
A12
A13
A14
A15
Vdd
Vdd
A16
A17
A7
A8
A9
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.
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
Vdd
P1.4
D1
1N4148
D3
1N4148
Vdd
Vdd
NOTE 5
Optional
C6
C10
.1
.1
D2
1N4148
D4
1N4148
Optional
LS1
4
3
2
1
© 2006 Sensory Inc.
AVDD
-CS
-RST
SCK
SI
U1
AT45DB041B
SPEAKER
BT1
3V
GND
VCC
-WP
SO
Vdd
5
6
7
8
C12
.1
RSC-4128
Vdd FLASH
Vdd FLASH
C4
.1