
TM1300 Data Book
Philips Semiconductors
2-6
PRODUCT SPECIFICATION
As with the video units, the audio-in and audio-out units
buffer incoming and outgoing audio data in SDRAM. The
audio-in unit buffers samples in either 8- or 16-bit format,
mono or stereo. The audio-out unit transfers 16- or 32-bit
sample data for mono, stereo or up to 8 audio channels
from memory to the external DACs. Any manipulation or
mixing of sound data is performed by the DSPCPU since
this processing will require only a small fraction of its pro-
cessing capacity.
2.5.8
S/PDIF Out Unit
The Sony/Philips Digital Interface Out (SPDO) unit al-
lows output of a 1-bit high-speed serial data stream. The
primary application is output of digital audio data in Sony/
Philips Digital Interface (S/PDIF) format to an external
electrically isolated transformer. The SPDO unit can also
be used as a general purpose high-speed data stream
output device such as a UART.
The SPDO unit supports 2-channel PCM audio, one or
more Dolby Digital six-channel data streams, or one or
more MPEG-1 or MPEG-2 audio streams (embedded
per Project 1937). It supports arbitrary programmable
sample rates independent of and asynchronous to the
AO unit sample rate.
2.5.9
Synchronous Serial Interface
The on-chip synchronous serial interface (SSI) is spe-
cially designed to interface to high integration analog mo-
dem frontends or ISDN frontend devices. In the analog
modem case, all of the modem signal processing is per-
formed in the TM1300 DSPCPU.
2.5.10
I2C Interface
The I2C bus is a 2-wire multi-master, multi-slave inter-
face capable of transmitting up to 400 kbit/sec. TM1300
implements an I2C master for use in single master envi-
ronments only. This interface allows TM1300 to config-
ure and inspect the status of I2C peripheral devices, such
as video decoders, video encoders and some camera
types.
2.6
NEW IN TM1300 (VERSUS TM1100)
TM1300 offers significant improvements over the
TM1100:
DSPCPU and coprocessor speed of up to 180 MHz
Support for 64-Mbit organized in x8 (limited to 32
MBytes), x16, x32 and 128 Mbit organized in x16
(limited to 32 MB). See Chapter 12, “SDRAM Mem-
ory System.”
SDRAM speed up to 143 MHz and no external
MATCHOUT to MATCHIN delay line.
Video output speed improvement: up to 81 MHz.
Video input speed improvement: up to 81 MHz.
Prefetcheable SDRAM aperture to increase perfor-
mance. See Chapter 11, “PCI Interface.”
Individual powerdown capability for each coproces-
sor (e.g. ICP, EVO, etc.).
New AO coprocessor with four separate channels
and support of 16 or 32-bit samples. 8-bit samples
are no longer supported.
New SPDO coprocessor (for output of SPDIF and
other 1-bit high-speed serial data streams)
2.7
NEW IN TM1300 (VERSUS TM1000)
Iin addition to the features described in Section 2.6
TM1300 offers also the following improvements over the
TM1000:
New
DSPCPU
instructions.
See
Appendix
A,
“DSPCPU Operations for TM1300.”
Video Output unit improvements (8-bit alpha blend-
ing, chroma keying, genlock). See Chapter 7,
“Enhanced Video Out.”
Capability to intermix PCI2.1 and 8-bit peripherals or
ROM/Flash memories on the external bus. See
Chapter 22, “PCI-XIO External I/O Bus.”
An on-chip DVD authentication/descrambling copro-
cessor. Information available to DVD product devel-
opers on special request.
Full 1149.1 boundary scan.
Improved
PCI
DMA
read
performance.
See
Section 11.1.
Improved clock generation with new DDS blocks.