SGS Thomson Microelectronics STV9432 Datasheet
STV9432
100MHz OSD FOR MONITOR
FEATURE
• 100MHz MAX. PIXEL CLOCK, AVAILABLE FOR
ANY LINE FREQUENCY BETWEEN 15 AND
140 kHz
• 12 x 18 CHARACTER ROM FONT INCLUDES:
- 240 MONOCOLOR CHARA CTE RS
- 16 MULTICOLOR CHARACTERS
• CHARACTER FLASHING
• UP TO 1K CHARACTERS TEXT DISPLAY
• ULTRA HIGH FREQUENCY PLL FOR JITTERFREE DISPLAY
• FLEXIBLE DISPLAY:
- ANY CHARACTER WIDTH AND HEIGHT
- ANYWHERE IN THE SCREEN
• SINGLE BYTE CHARACTER CODES AND
COLOR LOOK-UP TABLE FOR EASY PROGRAMMING AND FAST ACCESS
• CHARACTER FLIP OPERATIONS
• WIDE DISPLAY WINDOW ALLOWS PATTERN
GENERATION FOR FACTORY ADJUSTMENTS
2
•I
C BUS MCU INTERFACE
DESCRIPTION
2
Connected to a host MCU via a serial I
C Bus, the
STV9432TA is a multifunction slave peripheral
device integrating the ON-Screen-Display block.
The On-screen Display (OSD) includes a MASK
PROGRAMMABLE ROM that holds the CUSTOM
CHARACTER FONT, a 1Kbytes RAM that stores
the code strings of the different lines of t ext to be
displayed, and a set of registers to program character sizes and colors. A built-in digital PLL, operating at very high frequency, provides an accurate
display without visible jitter for a wide line frequency range from 15 to 140 kHz.
.
SDIP24 (Plastic Package)
ORDER CODE: STV9432
PIN CONNECTIONS
1
2
SDA
SCL
HS
VS
HFLY
N.C
DV
DV
XTI
XTO OV
3
4
5
6
7
8
9
DD
10
SS
11
12
24
23
22
21
20
19
18
17
16
15
14
13
TESTFILTER
ADCREFAGND
N.C
N.C
N.C
AV
DD
OV
DD
FBLK
BOUT
GOUT
ROUT
SS
Version 4.0
February 2000 1/16
This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice.
1
STV9432
1 - PIN DESCRIPTION
Pin Number Symbol Type Description
1 FILTER I/O PLL Filter
2 AGND Power Analog Ground
3 SDA I/O I
4 SCL I
5 HS Horizontal Sync Input
6 VS Vertical Sync Input
7 HFLY Horizontal Flyback Input
8 N.C. Not Connected
9 DV
10 DV
DD
SS
Power Digital +5V Power Supply
Power Digital Ground
11 XTI Crystal Oscillator Input
12 XTO O Crystal Oscillator Output
13 OV
SS
Power Ground for the RGB Outputs
14 ROUT O Red Output
15 GOUT O Green Output
16 BOUT O Blue Output
17 FBLK O Fast Blanking Output
18 OV
19 AV
DD
DD
Power +5V Supply for the RGB Outputs
Power Analog +5V Power Supply
20 N.C. Not Connected
21 N.C. Not Connected
22 N.C. Not Connected
23 ADCREF I/O ADC Reference Voltage Pin
24 TEST I/O Pin must be connected to ground
2
C Bus Serial Data
2
C Bus Serial Clock
2/18
2 - BLOCK DIAGRAM
24
TEST
HFLY
VS
HS
N.C
N.C
N.C
N.C
AV
DV
1
7
6
5
8
22
21
20
23
19
DD
9
DD
FILTER
ADCREF
OSCILLATOR
PLL
3.3V
VOLTAGE REGULATOR
POWER-ON RESET
CONTROLLER
1k BYTES R A M
DISPLAY
CHARACTER
FONT ROM
2
C BUS
I
INTERFACE
STV9432
STV9432
11
XTI
12
XTO
18
OV
DD
13
OV
SS
14
ROUT
15
GOUT
16
BOUT
17
FBLK
3
SDA
4
SCL
10
DV
SS
2
AGND
3 - ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
AV
, DVDD, OV
DD
V
IN
T
oper
T
stg
Supply Voltage -0.3, +6.0 V
DD
Input Voltage VSS - 0.3, VDD + 0.3 V
Operating Temperatu re 0, +70
Storage Temperature -40, +125
o
C
o
C
3/18
STV9432
4 - ELECTRIC AL CHARACTERISTICS
(V
= 5V, VSS = 0V, GND = 0V, TA = 0 to 70o, unless otherwise specified)
DD
Symbol Parameter Min. Typ. Max. Unit
SUPPLY
AV
, DVDD, OV
DD
+ DIDD + OI
AI
DD
INPUTS (SCL, SDA)
V
IL
V
IH
I
IL
INPUTS (HS, VS, HFLY)
V
IL
V
IH
V
HYST
I
PU
HSIN Horizontal Synchro Input Range 15 140 kHz
OUTPUTS (SDA open drain)
V
OL
OUTPUTS (R, G, B, FBLK)
V
OL
V
OH
OSCILLATOR (XTI, XTO)
I
IL
I
IH
V
IL
V
IH
V
OL
V
OH
ADCREF
V
REF
POWER-ON RESE T
DV
DDTH
Supply Voltage 4.75 5 5.25 V
DD
Analog and Digital Supply Current - - 150 mA
DD
Input Low Voltage 0.8 V
Input High Voltage 2.4 V
Input Leakage Current -1 +1 µA
Input Low Voltage 0.8 V
Input High Voltage HS, VS
HFLY
2.4
3.6
V
Schmidt Trigger Hysteresis 0.4 V
Pull-up Source Current (V
= 0V) 100 µA
IN
Output Low Voltage (IOL = 3mA) 0 0.4 V
Output Low Voltage (IOL = 3mA) 0 0.4 V
Output High Voltage (IOH = 3mA) 0.8V
DD
VDDV
XTI Input Source Current (VIN = 0V) 3 15 µA
XTI Input Sink Current (VIN = VDD)3 15µA
XTI Input Low Voltage 1.4 V
XTI Input High Voltage 0.7V
DD
V
XTI Output Low Voltage (IOL = 3mA) 0 0.4 V
XTI Output High Voltage (IOH = 3mA) 0.8V
DD
VDDV
Output Voltage Reference 3.3 V
Supply Threshold Level 3.6 V
4/18
STV9432
5 - TIMINGS
Symbol Parameter Min. Typ. Max. Unit
OSCILLATOR
f
OSC
f
PXL
R, G, B, FBLK (C
t
R
t
F
t
SKEW
2
C INTERFACE: SDA AND SCL (see Figure 1)
I
f
SCL
t
BUF
t
HDS
t
SUP
t
LOW
t
HIGH
t
HDAT
t
SUDAT
t
F
t
R
Note : These parameters are not tested on each unit. They are measured during our internal qualification procedure which
includes characterization on batches comming from corners of our processes and also temperature characterization
Clock Frequency 8 MHz
Pixel Frequency 100 MHz
= 30pF)
LOAD
Rise Time (see Note 1) 5 ns
Fall Time (see Note 1) 5 ns
Skew between R, G, B, FBLK 5 ns
SCL Clock Frequency 0 400 kHz
Time the bus must be free between 2 access 500 ns
Hold Time for Start Condition 500 ns
Set up Time for Stop Condition 500 ns
The Low Period of Clock 400 ns
The High Period of Clock 400 ns
Hold Time Data 0 ns
Set up Time Data 500 ns
Fall Time of SDA 20 ns
Rise Time of both SCL and SDA
Depend on the pull-up resistor and the load
capacitance
Figure 1.
STOP START DATA
t
BUF
SDA
t
HDS
SCL
t
HIGH
t
SUDAT
t
HDAT
t
LOW
t
SUP
STOP
5/18
STV9432
6 - SERIAL INTERFACE
The 2-wires serial interface is an I2C interface. To be
connected to the I
address; the slave address of the STV9432 is BA (in
hexadecimal).
A6 A5 A4 A3 A2 A1 A0 RW
1011101
2
C bus, a devic e mu st o wn its slave
- The two bytes of the internal address where the
MCU wants to write data(s),
- The successive bytes of data(s).
All bytes are sent MSB bit first and the write data
transfer is ended with a stop.
6.2 - DATA TRANSFER IN READ MODE
6.1 - DATA TRANSFER IN WRITE MODE
The host M CU c an write data in to the STV 943 2 registers or RAM.
To write data into the STVA9432TA after a start, the
MCU must send (Figure 2):
- First, the I
2
C address slave byte with a low level for
the R/W bit,
Figure 2. I2C Write Operation
SCL
SDA
SCL
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
SDA
Figure 3. I
SCL
SDA
Start
I2C Slave Address
2
C Read Operation
I2C Slave Address
R/W
A7 A6 A5 A4 A3 A2 A1 A0 - - A13 A12 A11 A10 A9 A8
ACK LSB Address ACK MSB Address ACKStart
ACK ACKData Byte 1 Data Byte 2 ACK Data Byte n Stop
R/W
A7 A6 A5 A4 A3 A2 A1
ACK
The host MCU can read data from the STV9432 registers, RAM or ROM.
To read data from the STV9432 (Figure 3), the MCU
must send 2 different I
includes the I
2
C slave address byte with R/W bit at
2
C sequences. The first one
low level and the 2 internal addr es s byte s.
The second one includes the I
2
C slave address byte
with R/W bit at high level and all the successive data
bytes read at successive addresses starting from the
initial address given by the first sequence.
A0
--
A13 A12
A10
A10A9A8
LSB Address ACK
MSB Address
ACK
Stop
6/18
SCL
SDA
Start
I2C Slave Address
D7 D6 D5 D4 D3 D2 D1 D0
R/W
*
ACK
Data Byte 1
D7 D6 D5 D4 D3 D2 D1 D0
ACK
Data Byte n
ACK
Stop
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