Daewoo DTU-28A8FZP, Service Manual

Page: 30 / 72

CP-530 Service Manual
-30-
·
Buffered mode DMA with a 16-byte data buffer.
·
Transfer type programmable for source and target buffer
(Byte, Half-word, Word, 4-Word burst).
·
Support for IO (non-incrementing addresses) source and/or destination.
·
Configurable throttle support with throttle sizes ranging from 16 to 112 bytes.
·
Integrated CRC Engine to perform CRC of MPEG section data as a post-process after the
section data has been collected into a memory queue.The CRCpolynomial is fixed and is
based on the 32-bit CRCdecoder model described in the Annex B of ISO/IEC 13818-1
specification.
Memory and bus interfaces
The pnx831x has two external buses:
·
16-bit SDRAM memory interface which supports a scalable frequency up to 133 MHz.
(64 Mbit, 128 Mbit, 256 Mbit)
·
16-bit memory and peripheral interface to connect ROM, NOR Flash and various
peripherals.
Peripheral interfaces
The pnx831x has many embedded peripheral units which have the following physical interfaces:
·
Two UART (RS-232) data ports: one with six wires for modem support and one with two wires
·
Two I2C master / slave transceivers, supporting the standard (100 Kbit/s) and fast (400 Kbit/s)
I2C bus modes.
·
Two smart-card reader interfaces sharing the same UART ISO-7816 compatible.
·
One Integrated Conditional Access Module interface (ICAM compliant) shared with a standard
smart-card interface.
·
Infrared receive and transmit interfaces (IR-capture & IR-blaster)
·
A general purpose port of up to 28bits available when the associated peripheral function is not
used in the application
·
One USB1.1 host controller
Interrupt interface
·
Sixteen external interrupt inputs shared with PIO lines.