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Control/Driver Power. PT6991 Datasheet |
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DESCRIPTION
The PT6991 is designed to integrate the LED driver,
key-scan matrix, infrared (IR) remote control
decoding and into one integrated solution. All
functions are programmable using I2C interface. In
standby operation, the PT6991 provides the standby
power management to the chipset for low power
consumption. The PT6991 is housed in 32-pin SOP
package. Pin assignments and application circuit are
optimized for easy PCB layout and cost saving
advantages.
APPLICATIONS
• VCR
• DVD recorder
• Home theater
• Set-top box and other application that require a
compact, integrated solution
• HTiB (Home theater in a box)
• Personal video recorders (PVRs)
BLOCK DIAGRAM
IR_DATA_IN
READY
Remote control
Decoder
PT6991
Front Panel LED Control/Driver Power
with Standby Management
FEATURES
• IC front panel LED controller driver
• Standby power management to the host
• 5.0V (VDD) supply and 3.3V interface for the IC
• IR remote control decoder (Philips, NEC,
Thomson, Sony, Matsushita)
• Multiple display modes ( 10 segments and 6 digits
to 12 segments and 4 digits )
• External resistors necessary for all logic outputs
(N-CH. Open drain)
• Key scanning (up to 10 x 1 matrix = 10 keys)
• I2C serial interface (SCL, SDA) communication
protocol
• Programmable hotkeys for IR remote control
command
• Programmable hotkeys for KEYSCAN command
• Low power consumption in standby mode
• Dimming circuit (8 steps)
• Available in SOP-32 package
STBY
IRQ_N
VDD
VSS
(5.0V or 3.3V) (0V)
SDA
SCL
VDD
RSTB
K1
I2C
Serial
I/F
500KHz
oscillator
1
Command Decoder
Display Memory
(12 x 6)
Timing Generator
key scan and
Dimming circuit
Key Data Memory
(1 x 10)
12-bit Output
Latch
12
10
2
Segment
Drivers
Data
Selector
2
Grid/Segment
Drivers
6-bit Shift
Register
2
64
Grid
Drivers
SG1/KS1
SG10/KS10
SG11/GR6
SG12/GR5
GR4
GR1
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
For:Natertech
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FUNCTION DIAGRAM
PT6991
IR_DATA_IN
IR Decoder
Key Scan
PT6991
Main Board
IRQ_N
READY
SDA
SCL
Front Panel
Controller and Driver
10
SG/KS
10
SG/GR
GR
2 Light-emitting diode
Display(LED)
4
STBY
Power to
Front Panel
Power to main board
Power to
Main board
Power to
Front Panel board
Power Supply Board
TYPICAL APPLICATION CIRCUIT
V 1.1
2 September 2010
For:Natertech
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ORDER INFORMATION
Valid Part Number
PT6991-S
Package Type
32 pins, SOP, 300mil
PIN CONFIGURATION
PT6991
Top Code
PT6991-S
V 1.1
3 September 2010
For:Natertech
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