STV2050A STMicroelectronics, STV2050A Datasheet - Page 12

• Manufacturer Part Number: STV2050A
• Description: IC DGTL CONVERGENCE PROC 80-PQFP
• Manufacturer: STMicroelectronics
• Type: Videor

Specifications of STV2050A

• Applications: HDTV
• Mounting Type: Surface Mount
• Package / Case: 80-MQFP, 80-PQFP
• Case: QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STV2050A - STRUCTURE OF THE PROGRAMMING SYSTEM
2 STRUCTURE OF THE PROGRAMMING SYSTEM
2.1 DATA STORAGE
The STV2050A is a programmable device. Some of the data, mainly the convergence param-
eters, must be able to be easily changed during TV set alignment or by the user, and must be
memorized when the TV set is switched off in order to be recovered when switched back on.
This data must therefore be stored in EEPROM.
The STV2050A has an embedded RAM for storing data used “in real time” at a high speed.
In order to simplify the microcontroller software, and to ensure a quick startup, the STV2050A
directly controls one or more (or up to seven) EEPROMs.
The STV2050A has 2 ports for I²C connections:
– The first one is used only for “SLAVE” connections: it is used to interface with a microcon-
– The second one is used only for “MASTER” connections: it is used to interface the
Figure 6. I²C BUS Data Transfer
12/83
troller in order to control the IC (customer adjustments,...). The microcontroller can write and
read the embedded RAM via this slave port.
STV2050A with the EEPROM that stores the convergence data and some user adjustments.
The transfer of data between the EEPROM and the embedded RAM is fully managed by the
STV2050A.
From / To
MCU
Slave I²C Interface
Data Tranfer Control
STV2050A
Master I²C Interface
Embedded
EEPROM
2k x 8 bits
RAM
Logic Core