OM5721 データシートの表示（PDF） - Philips Electronics

部品番号

コンポーネント説明

メーカー

OM5721

STB5660 (Set-Top Box) STB concept

Philips Electronics 

Philips Semiconductors

STB5660 (Set-Top Box) STB concept

Product specification

OM5721

4.5 Memory

4.5.1 NON-VOLATILE MEMORY (NVM)

A 32-kbyte NVM is implemented with an EEPROM

connected to the I2C-bus to allow for channel data storage,

etc.

4.5.4 FLASH

2 Mbytes [2 × (512K × 16)]; this can be up-graded to

4 Mbytes [2 × (1M × 16)].

Two flash banks are needed to allow code to be run from

one bank while writing to the other.

4.5.2 DRAM

2 Mbytes (1M × 16); 60 ns fast or hyper-page mode.

4.5.5 VIDEO AND GRAPHICS RAM

4 Mbytes SDRAM [2 × (1M × 16)] at 81 MHz.

4.5.3 BOOT ROM

256 kbytes (256 kbytes × 8) to allow for ROM boot up and

also to provide ROM emulation.

4.5.6 MEMORY OPTIONS

Surface mount links can select memory configuration.

Remark: The boot chip select is selectable between Boot

ROM and Flash.

4.6 Connectors

Table 2 The main board connectors

CONNECTOR

Optical SPDIF

SPDIF

SCART

3 Phonos (RCAs)

SVHS

CCIR 656 connector

JTAG

DEBUG socket

RS232

DESCRIPTION

A SPDIF signal from the SAA7215 is brought out via an optical output connector.

To allow connection of the Philips SAA2505 AC3/MPEG7.1 surround sound.

1 standard SCART, audio/video output signals only.

CVBS, right audio and left audio.

The Y/C output from the SAA7215 is brought out to a standard SVHS connector.

A connector to the CCIR 656 YUV output from the SAA7215.

A standard JTAG connector for Boundary Scan testing.

A surface mount DEBUG socket allowing connection to a Philips REDDX connector via a

conversion board to allow connection to a REDDNET or REDDROM board.

An additional RS232-C (±12 V) interface to provide a board connector for debug use.

IEEE 1394

One half of a suitable RS232 driver chip will be used for signal level conversion.

The Philips PDI1394L11 and PDI1394P11 is implemented to provide half-duplex 1394 access

from the SAA7214.

IEEE 1294

Under isolation mode the power for the physical IC will be taken from the bus via the switching

regulator. The option between isolated and non-isolated is selectable via option links.

Two 1394 connectors are available on the back panel.

Subject to Electro-Static Discharge (ESD), standard logic are implemented as buffers to

provide 1284 to a 25-way D-type female connector on the back panel.

1999 May 05

11

Share Link: