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參數(shù)資料
| 型號： | INA3010DW |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | INFRARED REMOTE CONTROL TRANSMITTER RC-5 |
| 中文描述： | 紅外遙控器遙控- 5 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 287K |
| 代理商： | INA3010DW |
INA3010
2
PIN DESCRIPTION
PIN No
1
2
3-6
7
DESIGNATION
X7 (IPU)
SSM (I)
Z0-Z3 (IPU)
MDATA (OP3)
DESCRIPTION
sense input from key matrix
system mode selection input
sense inputs from key matrix
generated output data modulated with 1/2 the oscillator frequency at a 25%
duty factor
generated output information
scan drivers
ground (0V)
scan drivers
oscillator input
test point 2
test point 1
sense inputs from key matrix
voltage supply
8
9-13
14
15-17
18
19
20
21-27
28
(I)
(IPU)
(ODN) = output with open drain n-channel transistor
(OP3)
= output 3-state
DATA (OP3)
DR7-DR3 (ODN)
GND
DR2-DR0 (ODN)
OSC (I)
TP2 (I)
TP1 (I)
X0-X6 (IPU)
Vcc (I)
= input
= input with p-channel pull-up transistor
FUNCTIONAL DESCRIPTION
Keyboard operation
Every connection of one X-input and one DR-output will be recognized as a legal key operation and will cause
the device to generate the corresponding code. The same applies to every connection of one Z-input to one DR-
output with the proviso that SSM must be LOW. When SSM is HIGH a wired connection must exist between a
Z-input and DR-output. If no connection is present the system number will not be generated. Activating two or
more X-inputs, Z-inputs or Z-inputs and X-inputs at the same time is an illegal action and inhibits further activity
(oscillator will not start).
When one X- or Z-input is connected to more than one DR-output, the last scan signal will be considered as
legal.
The maximum value of the contact series resistance of the switched keyboard is 7K
.
Inputs
In the quiescent state the command inputs X0 to X7 are held HIGH by an internal pull-up transistor. When the
system mode selection (SSM) input is LOW and the system is quiescent, the system inputs Z0 to Z3 are also held
HIGH by an internal pull-up transistor. When SSM is HIGH the pull-up transistor for the Z-inputs is switched
off, in order to prevent current flow, and a wired connection in the Z-DR matrix provides the system number.
Outputs
The output signal DATA transmits the generated information in accordance with the format illustrated by Fig.2
and Tables 1 and 2. The code is transmitted using a biphase technique as illustrated by Fig.3. The code consists
of four parts:
Start part - 1.5 bits (2 x logic 1)
Control part - 1 bit
System part - 5 bits
Command part - 6 bits
The output signal MDATA transmits the generated information modulated by 1/12 of the oscillator frequency
with a 50% duty factor.
In the quiescent state both DATA and MDATA are non-conducting (3-state outputs).
The scan driver outputs DR0 to DR7 are open drain n-channel transistors and conduct when the circuit is
quiescent. After a legal key operation the scanning cycle is started and the outputs switched to the conductive
state one by one. The DR-outputs were switched off at the end of the preceding debounce cycle.
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