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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 12/66頁 |
| 文件大?。?/td> | 441K |
| 代理商： | ZR38650 |
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12
ZR38650
STANDARD FUNCTIONS DESCRIPTION
The ZR38650 standard functions are selected and controlled by
the commands and responses shown in Tables 7 and 8. These
are the commands, parameters and responses sent and
received by a microprocessor over the serial host interface or
the parallel host interface when a parallel host is used. The
Applications Program Interfaces (APIs) for the AC-3, Pro Logic,
Pink Noise, etc. functions are similar. These APIs are used by a
developers program executing on the core processor.
Transfers between a host and the ZR38650 with the SPI are full-
duplex with the host being the master. For every command sent
a word is received back from the ZR38650. Transfers with the
parallel host interface or the serial Z2C interface are half-duplex
with the host master. Then the host must initiate the read for the
response after each command is sent. The commands are sent
only from the host and are in the general form shown.
There are two classes of commands: those that Write to the
decoder and those that Read back from the decoder. The Write
commands may have parameter words in addition to the basic
operation code. The Write commands are of three types as
shown in Table 7: those that choose primary decoding and test
functions (e.g., AC3), those that govern operation (e.g., STOP or
PLAY) and those that set-up operation (e.g., CFG).
0
1
2
3
4
5
6
7
Operation Code
Parameter Word N
Parameter Word 1
Parameter Word 2
Table 7: Standard Function Command Summary (Host to ZR38650 Transfers)
Class
Name
Operation
code (Hex)
Number of
parameter words
Description
Write Command
Commands to ZR38650 to perform a specific function or operation
Primary
Decoding
And Test
Functions
AC3
85
8
Select AC-3 and Pro Logic decoder function, either six- or two-channel output
PCMPROL
86
8
Select PCM or Pro Logic decoder functions with PCM input and mixer function
MPEG
87
8
Select MPEG or MPEG + Pro Logic decoder function
PNG
83
8
Select pink noise generator function
USER
88
8
Select user defined function
Operation
Functions
PLAY
8A
0
Resume selected function operation and unmute audio output
MUTE
8B
0
Mute audio output without stopping the selected operation
UNMUTE
89
0
Restore muted audio output while continuing the selected operation
STOP
8C
0
Stop operation, retain data in input buffer and mute audio output
STOPF
8D
0
Stop operation, flush the data in the input buffer and mute audio output
STAT
8E
0
Return decoder status information using the READ command
SPDIFSTAT
8F
0
Return the S/PDIF input channel status
GETPTC
9A
0
Return the PTC and STC values
NOP
80
0
Not a command, does not affect operation. Will return a Progress response.
Set-Up
Functions
PLLTAB
98
6
Set the PLL programmable registers
PLLCFG
99
1
Define the PLL configuration
CFG
82
8
Configure the ZR38650 I/O to the specific system hardware
SETSTC
97
7
Set the system time clock and video delay
VER
81
0
Return 32-bit ROM version number using the READ command
BOOT
90
N
Load and execute the N parameter words of bootstrap program
SPDIFCS
95
4
Write the S/PDIF output channel status
PARAM
96
N
Define parameters for special functions
INTRP
91
4
Interpret: load and execute four parameter words as a ZR38001 instruction
SETIO
92
4
Set, test and return general purpose single-bit I/O registers
POKE
93
7+4N
Load N 32-bit words to the core processor RAM at the given start address
PEEK
94
7
Read N 32-bit words from core processor RAM at the given start address
Read Command
Commands to ZR38650 to return Reply words to the host
READ
00
0
Command to ZR38650 to return a Reply word after specific commands
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