MV1820 Datasheet, PDF (4/9 Pages) Mitel Networks Corporation – Video Programme Delivery Control Interface Circuit

MV1820
ELECTRICAL CHARACTERISTICS (continued)
These characteristics are guaranteed over the following conditions (unless otherwise stated)
T_amb = 0 to 70˚C, V_DD = 5V ± 10%
Characteristic
I2C bus
SCL, SDA Schmitt inputs
Value
Pin
Units
Min Typ Max
Conditions
11, 13
Not clamped when VDD = 0V
Input voltage Low
0
1.5
V
Input voltage High
3.5
VDD
V
Output voltage Low
SCL clock frequency
11
0.1
0.4
100 1000
V
IOL = 3.0mA
kHz
DAV data available
100k (nom) pull-up resistor
Output voltage low
RESET Schmitt input
1
0.2
0.4
V
IOH = 2.4mA
100k (nom) pull-up resistor
Input voltage Low
0
0.8
V
Input voltage High
VDD-1.0
VDD
V
Input current Low
-22 -50 -220
µA
VIN = VSS
Input current High
-10
+10
µA
VIN = VDD
NOTE
Input voltage low and input voltage high for EXT/INT, AS and XTI are as specified for DATA I/O.
PIN DESCRIPTION
Symbol
Pin
Pin Name and Description
RESET
1
Active Low Reset. Includes a 100kΩ pull - up resistor
EXT/INT
2
Control Pin for SYNC I/O and DATA I/O. Includes a 100kΩ pull - down resistor.
When low or not connected, internal SYNC and DATA are used, pins 9 and 10 are
outputs. When high, supply SYNC and DATA from an external source, pins 9 and
10 are inputs.
BLC
3
Black level capacitor.
WLC
4
White level capacitor.
VIDEO
5
Input for composite video signal with negative going syncs
GND
6
Ground 0 volts.
TCR
7
Time constant resistor. Controlling discharge rate of black and white level
capacitor voltages.
AS
8
Address select for I²C bus. [0010 0001] with AS set high, or [0010 0011] with AS
set low. Includes 100kΩ pull - down resistor.
DATA I/O
9
Data input/output.
SYNC I/O
10
Sync input/output.
SCL
11
I²C bus serial clock.
VDD
12
Positive supply voltage +5V ± 10%
SDA
13
I²C bus bi-directional data port.
DAV
14
Active low open drain output data available signal to microprocessor.
Includes 100kΩ pull - up resistor
XTO
15
Crystal out, 27.75MHz fundamental crystal with on-chip 1MΩ resistor to XTI.
XTI
16
Crystal input.
3