saa6752hs NXP Semiconductors, saa6752hs Datasheet - Page 33

• Manufacturer Part Number: saa6752hs
• Description: Mpeg-2 Video And Mpeg-audio/ac-3 Audio Encoder With Multiplexer
• Manufacturer: NXP Semiconductors

Philips Semiconductors
7.8.4.3
The SAA6752HS supports DEBI slave mode with a block
transfer of 8-bit data. This can be used for interfacing with
a PCI bridge (for example, an SAA7146A chip set). There
is no addressing phase necessary. The transfer starts with
recognition of a PDIDS pulse. The requested data,
PDO[7:0], is transferred when the PDOVAL signal goes
active, indicating that data is available in the output buffer.
In the event of interfacing to an SAA7146A chip set, the
PDOVAL pin is connected to the DTACK_RDY pin and
serves as a handshake. The LDS_RDN and UDS_WRN
signals should be used to generate the PDIDS signal.
2004 Jan 26
handbook, full pagewidth
handbook, full pagewidth
MPEG-2 video and MPEG-audio/AC-3
audio encoder with multiplexer
DEBI slave mode
PDIDS
PDO [ 7:0 ]
PDOVAL
OUTPUT INTERFACE
Fig.13 Data transfer in DEBI slave mode.
XX
Fig.12 DEBI slave mode protocol.
SAA6752HS
01
PDIOCLK
PDOSYNC
PDOAV
PDO [ 7:0 ]
PDOVAL
PDIDS
33
Note that to operate correctly to the DEBI transfer protocol
the VALID output signal should be programmed negative
by I
recommended.
n.c.
n.c.
n.c.
2
C-bus command and a 3.3 k resistor to V
XX
AD16IN
DTACK_RDY
LDS_RDN
UDS_WRN
DATA RECEIVER
(SAA7146A)
02
MHC140
MHC139
SAA6752HS
Product specification
DDP
is