
35
22” TFT TV Service Manual
13/10/2004
12. IC DESCRIPTIONS (FOR DIGITAL)
STI5518 MX29LV160T
MAX232_SMD 24C32
74HCU04 STV0360
TSH22 MAX809
CS4334 TDCC2345TV39A
AMIC A43L2616
12.1. STI5518
12.1.1. General
Description
The STi5518 is a highly integrated single-chip decoder, designed for use in feature-rich mass-market set-
top boxes. It integrates a high-performance 32-bit CPU, a dedicated block for DVB/DirecTV transport
demultiplexing and descrambling, modules for MPEG-2 video and audio decoding with 3D-surround and
MP3 support, advanced display and graphics features, a digital video encoder and all of the system
peripherals required in a typical low-cost interactive receiver.
To cover the needs of DVD-capable set-top boxes, STi5518 integration options include a CSS decryption
block, a Dolby Digital audio decoder and Macrovision copy protection.
An ATAPI interface is built-in, supporting the glueless connection of standard Hard Disk Drives. In this way,
the STi5518 is ideal for set-top boxes featuring trick modes such as live TV recording, pausing and time-
shifting.
The STi5518 is backward compatible with the popular STi5500 set-top box decoder, allowing easy
migration from the previous generation.
The high level of integration in a single PQFP-208 package makes the STi5518 ideally suited for low-cost,
high-volume set-top box applications.
12.2. MAX232_SMD
12.2.1. General
Description
The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24
communications interfaces, particularly applications where ±12V is not available.
These parts are especially useful in battery-powered systems, since their low-power shutdown mode
reduces power dissipation to less than 5µW. The MAX225, MAX233, MAX235, and
MAX245/MAX246/MAX247 use no external components and are recommended for applications where
printed circuit board space is critical.
12.2.2. Features
•
Operate from 5V Power Supply (+5V and +12V—MAX231/MAX239)
•
Low-Power Receive Mode in Shutdown (MAX223/MAX242)
•
Meet All EIA/TIA-232E and V.28 Specifications
•
Multiple Drivers and Receivers
•
3-State Driver and Receiver Outputs
•
Open-Line Detection (MAX243)
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