參數(shù)資料
型號(hào)： ZR38650
廠商： Electronic Theatre Controls, Inc.
英文描述： PROGRAMMABLE DIGITAL AUDIO PROCESSOR
中文描述： 可編程數(shù)字音頻處理器
文件頁(yè)數(shù)： 18/66頁(yè)
文件大小： 441K
代理商： ZR38650
18
ZR38650
Set STC
SETSTC
The SETSTC command sets the system time clock and video
delay for A/V synchronization.
Return Version Number
VER
The VER command allows the four words of the ROM version
number (VERR) to be returned to the host by sending four READ
commands.
Load Program
BOOT
The BOOT command allows serial loading and running of a
program from the host. (The format is given in Appendix A of the
PROCESSOR FUNCTIONAL DESCRIPTION and includes the
start address, number of words and instructions). Execution
transfers to the start address with no further action by the ROM
resident executive.
S/PDIF Channel Status
SPDIFCS
This command defines the output status information for the
S/PDIF transmitter. It must be sent before the function command
is sent. The SPO bit in the CFG command enables the S/PDIF
transmitter.
Special Function Parameter
PARAM
This command defines parameters for special functions that
require more then 8 bytes of information. The specific meaning
and value of the command parameters are determined by the
function that is using it. Any number of parameters can be spec-
ified depending on the function. Each parameter contains three
bytes which are stored as a single 24-bit word to memory
(PAR
12
is the most significant byte). If the destination memory is
20 bits the four most significant bits of PAR
i2
are ignored.
AVS
Audio/Video Synchronization
: 0 = Passive synchroniza-
tion, 1 = Active synchronization.
SCU
System Clock Update:
0 = When SU flag is set,
1 = Immediately.
STC
System Time Clock:
A 32-bit number in units of 90 kHz.
VDY
Video Delay
: A 16-bit two’s-complement number in units of
90 kHz.
0
1
2
3
4
5
6
7
1
1
1
0
1
0
0
1
0
0
AVS
SCU
STC [31:24]
STC [23:16]
STC [15:8]
STC [7:0]
VDY [15:8]
VDY [7:0]
Parameter 4
Parameter 5
Parameter 6
Parameter 7
Parameter 3
Parameter 1
Parameter 2
Command
0
1
2
3
4
5
6
7
1
0
0
0
0
0
0
1
Command
Parameter 1
0
1
2
3
4
5
6
7
0
0
0
0
1
0
0
1
Command
Program Word 0
Program Word N-1
Parameter N
SR
Sample Rate
of output: 0 = 44.1 kHz, 2 = 48 kHz, 3 = 32
kHz. All other values reserved.
CC
Category Code
. The bit order in this parameter is
reversed, i.e. bit 0 of IEC-958 Category Code is the right-
most bit.
PE
Pre-Emphasis
when P = 0: 0 = None, 1 = 50/15 μs.
C
Copyright
indication.
P
PCM
: 0 = PCM encoded audio, 1 = Non-PCM encoded
audio.
EXT
Opcode Extension:
0-255 identification number.
PAR
ij
Parameter
number: i= 1 through N parameter number, j
= 2 through 0 byte index.
0
1
2
3
4
5
6
7
1
0
1
0
1
0
0
1
SR
0
CC [7:0]
0
P
C
PE
0
0
Parameter 4
Parameter 3
Parameter 1
Parameter 2
Command
0
1
2
3
4
5
6
7
0
1
1
0
1
0
0
1
EXT
PAR
12
PAR
10
PAR
22
PAR
11
PAR
21
....
....
Parameter 4
Parameter 5
Parameter 0
Parameter 3
Parameter 1
Parameter 2
Command
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