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2004 Jan 26 40
Philips Semiconductors Product specification
MPEG-2 video and MPEG-audio/AC-3
audio encoder with multiplexer
SAA6752HS
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Table 14 I
2
C-bus status
Table 15 I
2
C-bus SDRAM size
ADR
HEX
M
COMMAND
NAME
R/W SIZE/POSITION PARAMETER/RANGE DEFAULT DESCRIPTION
10 all get running mode R 1 byte − This command gets the actual running mode
from the SAA6752HS and is read-only. The
busy flag indicates that the SAA6752HS is
working at a control command. If the busy flag
is set, the SAA6752HS skips all received
I
2
C-bus commands.
bit 0 = 1 idle
bit 1 = 1 encoding
bit 2 = 1 stopped
bit 3 = 1 paused
bit 4 = 1 reserved
bit 5 = 1 busy flag
11 all status mask W 2 bytes (16 bits) all 0’s masking of events; see Table 11
bit = 0 event disabled
bit = 1 event enabled
12 all interrupt status R 2 bytes (16 bits) − This command allows reading a status
register. Reading the status will clear the
status and reset the interrupt assertion pin.
bit = 0 no event detected
bit = 1 event detected
13 all get version
number
R 12 bytes −−This command allows reading of the current
MIPS
firmware version number, hardware
number and the audio DSP firmware number.
Each number contains 4 bytes.
ADR
HEX
M
COMMAND
NAME
R/W SIZE/POSITION PARAMETER/RANGE DEFAULT DESCRIPTION
20 I bus width and
memory size
R/W 1 byte 16 bit
64 Mbit
bus width of the SDRAM interface and size of
connected SDRAM
bit[1:0] = 00 16 Mbit 16-bit wide
bit[1:0] = 10 64 Mbit 16-bit wide
bit[1:0] = 11 reserved