KBR38A-2 Noritake Company Inc, KBR38A-2 Datasheet - Page 2

• Manufacturer Part Number: KBR38A-2
• Description: IR RECEIVER
• Manufacturer: Noritake Company Inc

Specifications of KBR38A-2

• Supply Voltage Range: 4.75V To 5.25V
• Supply Current: 13mA
• Opto Case Style: Module
• Operating Temperature Range: -40°C To +85°C
• External Depth: 9mm
• External Length / Height: 24mm
• External Width: 18mm
• Termination: RoHS Compliant

IR Receiver Module
Functions of CTRL, ALT and SHIFT keys when in decode option T (KBC56A decoding – default mode)
In all decode modes if the CTRL, ALT and SHIFT keys are pressed in sequence the next key (A-U) sets, and stores in EEPROM, output mode
/ decode options. All other functions of these keys are described in the following table.
In KBC56A decode mode, HEX entry can be used to send any value from 00h to FFh by pressing the ALT key followed by the 2 HEX digits. In
all output and decode modes a key starts to auto repeat after holding it down for 1 second. A 16 byte FIFO buffer holds unread key presses.
If Host Busy is enabled (output option P) in async CMOS or RS232 output modes and Host Busy is high (low in RS232), key presses are
stored in the buffer but not sent. IRQ still activates to indicate key presses. When this buffer is full, further key presses are discarded.
In raw decode modes (R and S), the CTRL, ALT and SHIFT keys have no special function except to change mode.
SHIFT Lock
Async serial (CMOS, idle high) – A, B, C
Data is sent asynchronously from TOUT. Baud rate is
9600, 19200 or 38400. Before the start bit is
transmitted /IRQ goes low for approximately 1us.
Host Busy must be low to enable transmission.
Async serial (pseudo RS232, idle low) – D, E, F
Data is sent asynchronously from TXD. Baud rate is
9600, 19200 or 38400. Before the start bit is
transmitted IRQ goes high for approximately 1us.
Host Busy must be high to enable transmission.
Do not connect to a serial port where higher output
voltages than 5V or lower than 0V are present.
Asynchronous serial (RS485, differential) – J, K, L
Data is sent asynchronously from +A and -B. Baud
rate is 9600, 19200 or 38400. Before the start bit is
transmitted IRQ goes high for approximately 1us.
SPI slave – G, H
The host must drive CLK IN to shift data out of SOUT.
If there is no data in the buffer the value returned will
match the value clocked in on SIN (if this is left
disconnected FFh will be returned). Data is sent MSB
first.
SPI master – M, N
Data is clocked out on the rising or falling edge of CLK
OUT. Data is sent MSB first. If /SS is enabled (P), the
/SS-/STRB line will be idle high and go low while
clocking data. If /STRB is enabled (Q), the /SS-/STRB
line will idle high and will go low for approximately 1us
after the byte is clocked out. It is recommended to
reset the host system after changing SPI mode as an
extra clock pulse can be generated.
I2C slave – I (KBR38A-2)
Data is clocked out in slave transmit mode. The host
must start the transfer with a start condition. Then the
fixed address of 71h is sent with R/W set high. The
KBR38A-2 then responds with an ACK/NACK bit. The
host must then issue 8 further clocks to clock data out.
The host must then send an ACK on the 9
a stop condition is sent.
ALT Lock
Existing
Normal
NORITAKE ITRON IR CONTROLLERS
SHIFT
CTRL
State
ALT
Normal
Red characters / upper case
Blue characters / HEX entry
Raw RC5 + 80h (once only)
Keyboard character
SHIFT continuous
ALT continuous
th
bit. Finally
CTRL
CTRL on
CTRL off
ALT off
SHIFT off
ALT Lock off
SHIFT Lock off
/SS or latch
HOST
HOST
HOST
HOST
CLK OUT
HOST
HOST
CLK IN
SOUT
BUSY
BUSY
RXD
RXD
SDA
SCL
SIN
DIN
INT
INT
INT
INT
5V
0V
5V
0V
+A
5V
0V
5V
0V
5V
0V
5V
0V
-B
New Key Press
TOUT
/IRQ
HostBusy
VDD
0V
TXD
IRQ
/HostBusy
VDD
0V
+A
-B
IRQ
VDD
0V
CLK IN
SOUT
SIN
VDD
0V
CLK OUT
DOUT
/SS or /STRB
VDD
0V
SCL
SDA
/IRQ
VDD
0V
KBR38A-1/-2
KBR38A-1/-2
KBR38A-1
KBR38A-1
KBR38A-1
KBR38A-2
ALT
ALT on
ALT Lock
No action
SHIFT off, ALT on
Normal (once only)
ALT once
www.KBC56A.com
KBR38A-1 / KBR38A-2
SDA
SCL
TOUT
/IRQ
TXD
IRQ
+A
-B
IRQ
CLK IN
CLK IN
CLK OUT
CLK OUT
/IRQ
(rising)
(falling)
(rising)
(falling)
DOUT
/SS
/STRB
SOUT
SIN
START
1us
1us
1us
1us
2us
2us
2us
250ns (min)
>10us
START
START
START
START
D7
D7
D7
MSB
1us
1
D0
D0
D0
D0
D6
D6
D6
LSB
SLA+R (71h)
7
D1
D1
D1
D1
D5
D5
D5
SHIFT
SHIFT on
SHIFT Lock
ALT off, SHIFT on
No action
SHIFT once
Normal (once only)
R/W
8
D2
D2
D2
D2
D4
D4
D4
ACK
9
D3
D3
D3
D3
D3
D3
D3
D4
D4
D4
D4
MSB
1
D2
D2
D2
D5
D5
D5
D5
Page 2
DATA
D1
D1
D1
LSB
D6
D6
D6
D6
8
ACK
9
D7
D7
D7
D7
D0
D0
D0
1us
STOP
STOP
STOP
STOP
STOP