Semiconductor Corporation
CS8130
CS8130
Multi-Standard Infrared Transceiver
Features
General Description
The CS8130 is an infrared transceiver integrated cir-
cuit. The receive channel includes on-chip high gain
PIN diode amplifier, IrDA, HPSIR, ASK & TV remote
compatible decoder, and data pulse stretcher. The
transmit path includes IrDA, HPSIR, ASK & TV remote
compatible encoder, and LED driver. The computer
data port is standard UART TxD and RxD compatible,
and operates from 1200 to 115200 baud.
External PIN diode and transmit LED are required. A
control mode is provided to allow easy UART program-
ming of different modes.
The CS8130 operates from power supplies of +2.7V to
+5.5V.
•
Adds IR port to standard UART
•
IrDA, HPSIR, ASK (CW) & TV remote
compatible
•
1200bps to 115kbps data rate
•
Programmable Tx LED power
•
Programmable Rx threshold level
•
Power down modes
•
Direct, no modulation, mode
•
Tiny 5x7mm 20 pin SSOP package
•
+2.7V to +5.5V supply
Ordering Information:
See
page 28.
+Supply
VA+
8
PINA
PINC
+Supply
VD+
12
11
RESET
RXD
RxD
FORM/BSY
CTS
6
7
13
PIN Diode
Preamplifier
Threshold
Detect/Decode
Demodulator
16
+Supply
LED1C
1
LED
Driver 1
Modulator
FIFO
Data/Control
Decoder
14
TXD
STANDARD
UART
TxD
LED2C
15
4
D/C
DTR
PWRDN
LED
Driver 2
3
2
TGND1
5
AGND
19
EXTCLK
Baud Rate
Generator
17
18
10
9
20
CLKFR
DGND
TGND2
XTALIN XTALOUT
Preliminary Product Information
Crystal Semiconductor Corporation
http://www.cirrus.com
P.O. Box 17847, Austin, TX 78760
(512) 445-7222 FAX: (512) 445-7581
This document contains information for a new product. Crystal
Semiconductor reserves the right to modify this product without notice.
Copyright
©
Crystal
Copyright © Cirrus Logic, Inc. 2005
Semiconductor Corporation 1994
(All Rights Reserved)
(All Rights Reserved)
JUN ’94
SEP ‘05
DS134PP2
DS134F1
1
CS8130
CS8130
TRANSMITTER DRIVER CHARACTERISTICS (T
A
= 25
°C;
All V+ = 3.0V, Digital Input Levels: Logic 0 = 0V,
Logic 1 = V+; unless otherwise specified)
Parameter
Symbol
Min
-
-
-
-
-
-
-
5%)).
Typ
10
20
20
-
-
-
-
-
Max
TBD
50
50
25
0.5
20
250
200
Units
pF
ns
ns
%
Ω
µA
mA
ns
Output capacitance
(Note 1)
Output rise time (10% to 90%)
tr
Output fall time (90% to 10%)
tf
Overshoot over final current
On resistance
Off leakage current
Output current (each driver)
(Note 2)
Output jitter relative a jitter free input clock
Notes: 1. Typical LED junction capacitance is 20pF.
2. 50% duty cycle, max pulse width 165
µs
(3/16 of (1/1200 bps +
RECEIVER CHARACTERISTICS (T
A
= 25
°C;
All V+ = 3.0V, Digital Input Levels: Logic 0 = 0V, Logic 1 = V+;
unless otherwise specified)
Parameter
Symbol
Min
Typ
Max
Units
Input capacitance
(Note 3)
-
10
TBD
pF
Input noise current
-
-
11
pA/rtHz
Maximum signal input current from detector
-
-
2
mA
Maximum DC input current (typically sunlight)
-
-
200
µA
Input current detection thresholds
RS4-0=00000:
-
7.8
-
nA
(Programmable with a 5 bit value)
RS4-0=00001:
-
15.6
-
nA
16.4
23.4
30.4
nA
(Min, Max = Typical
±30%)
RS4-0=00010:
"
↓
↓
↓
(Note 4)
↓
nA
169.5
242.2
314.9
RS4-0=11110:
nA
175
250
325
RS4-0=11111:
Bandpass filter response
High Pass -3dB:
-
35
-
kHz
Low Pass -3dB:
-
700
-
kHz
-
5
10
ms
Receiver power up time
With high (200µA) dc ambient
-
0.3
1
ms
With normal (2µA) dc ambient
Turn-around time, with receiver on continuously
(Note 5)
-
5
10
ms
EMI rejection of system (0.5MHz to 100MHz).
(Note 6)
3
-
-
V/m
Notes: 3. Typical PIN diode junction capacitance is 50pF.
4. The
±30%
tolerance covers chip-to-chip variation. The temperature coefficient of the receiver
threshold setting is low. Current detection thresholds are above the DC ambient condition.
Settings of RS4-0 of less than 00010 are not practical because of noise.
5. Turn-around time is the time taken for the PIN diode receiver to recover from the IR energy
from the transmitter. The remote end of the link must wait for this time after receiving data
before transmitting a reply. This time may be reduced to <1 ms by good IR shielding from
the transmit LED to the PIN diode.
6. This is a system specification. A metal shield over the PIN diode and CS8130 is
recommended to ensure system compliance.
Specifications are subject to change without notice.
2
DS134F1
DS134PP2
CS8130
CS8130
POWER SUPPLY SPECIFICATIONS (TA = 25°C; V+ = 3.0V, Digital Input Levels: Logic 0 = 0V, Logic 1 = V+,
Note 7)
Parameter
Symbol
Min
Typ
Max
Units
Power Supply Voltage
2.7
3.0
5.5
V
Power Supply Current - All functions enabled
(Note 8)
-
-
2.5
mA
Power Supply Current - All functions disabled
(Note 9)
-
-
1
µA
Power Supply Current - Receiver only enabled
(Note 8)
-
-
2.5
mA
Power Supply Current - Transmit only enabled
(Note 10)
-
-
0.5
mA
Oscillator Power Supply Current
low power mode:
-
-
0.5
mA
normal power mode:
-
-
1.5
mA
Data & State Retention Supply Voltage
2
-
-
V
Notes: 7. Power supply current specifications are with the supply at 3.0V. For approximate consumption at
+5.0V, multiply the above currents by 1.667.
8. Oscillator in low power mode, does not include LED current. Subtract oscillator current if using
an external clock to run the CS8130.
9. Floating digital inputs will not cause the power supply to increase beyond the specification.
10. Does not include LED current, does include oscillator current in low power mode.
RECOMMENDED OPERATING CONDITIONS (All voltages with respect to 0V)
Parameter
Operating Ambient Temperature
Data and State Retention Temperature (In Power Down)
Symbol
T
A
Min
0
-40
Typ
25
-
Max
70
85
Units
°C
°C
DIGITAL PIN CHARACTERISTICS (TA = 25°C, Supply = 3.0V)
Parameter
High-level Input Voltage
Low-level Input Voltage
High-level Output Voltage at IO = -2.0mA
Low-level Output Voltage at IO = 2.0mA
Output Leakage Current in Hi-Z state
Input Leakage Current
Output Capacitance
Input Capacitance
Symbol
V
IH
V
IL
V
OH
V
OL
(Digital Inputs)
C
OUT
C
IN
Min
2.0
-
VD-0.3
-
-
-
-
Typ
-
-
-
-
-
5
5
Max
-
0.8
-
0.3
0.2
0.2
-
-
Units
V
V
V
V
µA
µA
pF
pF
DS134F1
DS134PP2
3
3
CS8130
CS8130
ABSOLUTE MAXIMUM RATINGS (All voltages with respect to 0V)
Parameter
Symbol
Min
Max
6.0
±10
VD+0.3
+125
+150
-
Units
V
mA
V
°C
°C
V
Power Supplies
-0.3
Input Current
Except Supply Pins & Driver Pins
-
Input Voltage
-0.3
Ambient temperature
(Power Applied)
-55
Storage Temperature
-65
2000
ESD using human body model
(100pF with series 1.5kΩ)
Warning: Operation beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
SWITCHING CHARACTERISTICS (T
A
= 25
°C;
All V+ = 3.0V, Digital Input Levels: Logic 0 = 0V, Logic 1 = V+;
unless otherwise specified)
Parameter
Symbol
Min
Typ
Max
Units
XTALIN frequencies
CLKFR pin low:
-
3.6864
-
MHz
(Note 11)
CLKFR pin high:
-
1.8432
-
MHz
XTALIN duty cycle
45
50
55
%
Crystal Oscillator start up time
-
-
25
ms
Notes: 11. In normal oscillator mode, the crystal is internally loaded with 20 pF, which is the standard loading
at which the crystal frequency is tuned. In low power oscillator mode, the internal loading on the
crystal is reduced to approximately 5pF. The crystal frequency will therefore increase by
about 0.03% in low power mode.
4
DS134F1
DS134PP2
CS8130
CS8130
10
Ω
Ferrite
Bead
+3.0V supply
0.1
µF
To LED
+
10
µF
TGND1, 2
0.1
µF
VA+
AGND
VD+
PINC
PIN
Diode
PINA
+ Supply
47
µF
+
RXD
RxD
FORM/BSY
EXTCLK
XTALIN
CTS
LED2
LED1
CS8130
XTALOUT
3.6864 MHz or 1.8432 MHz.
Can also use an external
clock at 3.6864 MHz
or 1.8432 MHz
UART
R1 TBD
Ω
LED1C
TXD
D/C
TxD
DTR
RTS
R2 TBD
Ω
LED2C
Use: LED1/R1
or:LED1/R1 & R2
or: LED1/R1 &
LED2/R2
RESET
TGND1
TGND2
DGND
CLKFR
CLKFR low for 3.6864 MHz clock
CLKFR high for 1.8432 MHz clock
PWRDN
System
Control
For 2 LED, +5V supply systems,
connect 2 LEDs in series. Use R1 & R2
to give programmable output level.
Figure 1. Recommended Connection Diagram
DS134F1
DS134PP2
5
5
Electronics Design Contest
京公网安备 11010802033920号
EEWORLD
