參數(shù)資料
型號: T7536
廠商: Lineage Power
元件分類: Codec
英文描述: 16-Channel Programmable Codec Chip Set(十六通道可編程編解碼器芯片組)
中文描述: 16通道可編程解碼器芯片組(十六通道可編程編解碼器芯片組)
文件頁數(shù): 41/44頁
文件大?。?/td> 772K
代理商: T7536
Lucent Technologies Inc.
41
Data Sheet
February 1999
Codec Chip Set
T7531A/T7536 16-Channel Programmable
Software Interface
(continued)
Table 41 shows the memory map for the DSP engine ROM. The ROM information is not accessible via the micro-
processor. The total ROM size is 4 Kwords.
Table 41. DSP Engine ROM Memory Map
Address Range
0x0003
0x0008
0x000B
0x0380
0x03B0
0x03B8
0x0400
0x0500
0x0600
0x0610
0x0680
0x0690
0x0700
0x0720
0x07A0
0x0860
0x0A80
0x0B00
0x0B60
0x0B80
0x0C00
0x0E00
0x0F00
0x0F10
0x0F20
0x0F30
0x0F40
0x0F60
0x0FFE
0x0FFF
Memory Contents
HDS interrupt service routine
Time-slot sync interrupt service routine
Start-up routine
Time segment controller (ts_proc)
Reserved
Reserved
Transmit path active routine
Receive path active routine
Transmit path inactive/loopback routine
Transmit path inactive routine
Receive path inactive/loopback routine
Receive path inactive routine
Self-test pass 1 setup (TX)
Self-test pass 2 setup (RX)
Tone generation start-up
Tone detection start-up
Variance calculation
Peak detection
dc generation
ROM checker
RAM checker
Variance calculation with TX filters
Simultaneous start-up of tone generator and DFT routine
Simultaneous start-up of tone generator and original variance routine
Routine places TX and RX halves of a time slot into inactive loopback
Places TX and RX halves of a time slot into inactive routine
Routine for copying values in channel coefficient table 0 to all 16-channel tables
Approximate location of HDS code
Checksum for ROM 0x0000 : 0x07FF
Checksum for ROM 0x0800 : 0x0FFD
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