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PDF BU92747GUW Data sheet ( Hoja de datos )
| Número de pieza | BU92747GUW | |
| Descripción | IrDA Controller LSI built-in Ir remote control | |
| Fabricantes | ROHM Semiconductor | |
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Datasheet
IrDA Controller LSI
built-in Ir remote control
BU92747XXX Series
General Description
BU92747XXX series is IrDA controller LSI built-in
Ir remote control.
Compatible with IrDA Physical layer version 1.0, 1.1, 1.2,
1.3, transmission control is possible between 2.4kbps to
4Mbps.
Built-in remote transmission formatter.
Infrared transmission formatter that compatible with
each maker’s formats is possible.
Features
Data transfer speed (bps)
IrDA SIR: 2.4kbps, 9.6kbps, 19.2kbps, 38.4kbps,
57.6kbps and 115.2kbps
IrDA MIR: 0.576Mbps, 1.152Mbps
IrDA FIR: 4Mbps
IrSimple
Detection, removal and insertion of preamble, start
flag and stop flag in FIR mode
Detection, removal and insertion of start flag and stop
flag in MIR mode
Detection and occurrence of CRC
Interface
16-bit data bus
Interrupt INTR (IrDA controller)
Address A0-3
Control signals CS, RD and WR
Built-in 2560 2byte FIFO buffer (for transmission
and reception
Accessible as a memory device connected to the bus
Power down mode setting possible for transmission
and reception
Operation at VDD=1.62 to 1.98V
Input clock of 48MHz for external input clock or crystal
input clock
Ir remote control function
Serial 2-lines SDA, and SCL
Programmable carrier frequency
Programmable length of header
Programmable length of data Hi
Programmable length of data Lo
Programmable length of end part
Programmable arbitrary length of output data bit
Programmable frame
Continuous data transmission
Interrupt function NIRQ
Applications
IrDA transmission control.
Remote transmission formatter
Key Specifications
Absolute maximum rating VDD：
-0.3 V to 4.5V
Power supply voltage：
1.62V to 1.98V
Input voltage H level：
1.62V ～ 3.6V
Input clock frequency：
48MHz(within I100ppm)
Clock input current consumption ： 30mA(Max)
Standby current：
10μA (Max)
Operating temperature range：
-40℃ to +85℃
Allowable loss VBGA048W040： 570mW (Max)
VQFP48C：
900mW (Max)
Package
VBGA048W040
W(Typ.) x D(Typ.) x H(Max.)
4.0mm x 4.0mm x 0.9mm
VQFP48C
9.00mm x 9.00mm x 1.60mm
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed for protection against radioactive rays
1/1
TSZ02201-0E4E0F100020-1-2
24. June. 2015 Rev.001
1 page  
BD92747XXX
Datasheet
Pin name
WR
I/O
I
INTR
O
RESET
I
PWDN
I
IrRC
O
CTLA
SCL
SDA
O
I
I/O
NIRQ
O
XIN/CLK48M
XOUT
I
O
TEST1-3
I
IrDA
PWDOWN
VDD
VIO1
VIO2
GND
O
-
-
-
-
Condition of
after reset
-
H
-
-
L
L
-
Input
H
-
-
-
H
-
-
-
-
Pin Function
Write Signal Input Pun. Low (L) Active
CPU Interrupt Request Output Pin. (IrDA Controller)
The signal goes “Low” when an interrupt condition takes
place.
(note) Read EIR register at once and do appropriate
processing when the interrupt request is occurred. When
processing to the interrupt request is delayed, it is not likely
to be able transmission/ reception it normally.
Reset Input Pin. Low (L) Active
The signal causes the internal register settings, etc. to be
initialized.
Power Down Mode Setting. Low (L) Active
When set to Low (L), this signal causes the wait status and
sets the low dissipation current mode.
After the power down mode is removed, RESET=L must
set to Low until crystal clock oscillation becomes stable
(about 2 or 3 ms). After that RESET must set to High.
Take it into consideration that this period depends on the
crystal in use.
Remote control transmission Output pin
Transmission remote control when RC_EN= "H",
RC_MODE= "L"
Control Signal Output Pin
Circuit
Diagram
B
A
B
B
A
A
Serial clock
F
Serial data I/O Pin
CPU Interrupt Request Output Pin (Ir remote control)
The signal goes “Low” when an interrupt condition takes
place.
Crystal IN / External CLK Input
G
A
E
Crystal OUT (N.C when external input clock is used)
Test pins (These pins must be GND during normal
operation.)
IrDA module control signal output pin
These pins must be OPEN for IrDA modules having no
power-down pin.
Power supply pin
E
D
A
-
Interface power supply voltage1
-
Interface power supply voltage2
-
Ground pin
-
●Equivalent Circuit Diagram
ABC
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
PWDN
XIN
XOUT
DE
FG
5/5
TSZ02201-0E4E0F100020-1-2
24. June. 2015 Rev.001
5 Page 
BD92747XXX
●Timing Diagram
Read Timing
trcs
CS
A0～3
tras
RD
D0～15
trdd
trpw
INTR
trch
trah
trcv
trdh
tintr
Infrared Ray (IR) Interface Timing
tspw
SIR
ftmmppww
MIR
tfpw
FIR
tfdpw
Datasheet
Write Timing
CS
A0～3
WR
D0～15
INTR
Reset Timing
twcs
twas
twpw
twds
twch
twah
trcv
twdh
tintr
RESET
trstw
●Ir remote control (serial I/F) AC Characteristics
Ta=25C, VDD=1.8V, VIO1=1.8V, VIO2=1.8V and GND=0V unless otherwise stated.
Parameter
Symbol
Min.
Limits
Typ.
Max.
SCL clock frequency
fSCL
-
- 400
Bus free time
Set-up time for
(repeated) START condition
Hold time
(repeated) START condition
SCL LOW time
tBUF
tSU;STA
tHD;STA
tLOW
1.3
0.6
0.6
1.3
-
-
-
-
-
--
-
-
SCL HIGH time
tHIGH
0.6
-
-
Data setup time
tSU;DAT
100
-
-
Data hold time
tHD;DAT
0
-
-
Setup time for STOP condition
tSU;STO
0.6
-
-
Unit
kHz
μs
μs
μs
μs
μs
ns
ns
μs
Conditions
●Timing Diagram
(repeated)
START
condition
BIT7
tSU;STA
tLOW tHIGH
SCL
SDA
BIT6
1/fSCL
･･･
Acknowledge
STOP
condition
tBUF tHD;STA
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
tSU;DAT
tHD;DAT
11/11
tSU;STO
TSZ02201-0E4E0F100020-1-2
24. June. 2015 Rev.001
11 Page | ||
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