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參數(shù)資料
| 型號： | SAA8200HL |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | Ensation Base integrated wireless audio baseband |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-407-1, LQFP-100 |
| 文件頁數(shù)： | 10/71頁 |
| 文件大?。?/td> | 298K |
| 代理商： | SAA8200HL |
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SAA8200HL_2
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Preliminary data sheet
Rev. 02 — 17 October 2005
10 of 71
Philips Semiconductors
SAA8200HL
Ensation Base integrated wireless audio baseband
7.
Functional description
7.1 EPICS7B
The EPICS7B core has only access to four of the five memory spaces, PMEM, XMEM,
YMEM and DIO. Memory space IO is only accessible via the DMA. To distinguish between
the memory spaces, 18-bit addressing is used, of which the two Most Significant (MS) bits
determine which space the address is in, see
Table 4
. The EPICS7B only knows about the
16 least significant bits and uses special instructions to access DIO space.
EPICS7B access:
XMEM is accessed by EPICS7B when using X in its instructions
YMEM is accessed by EPICS7B when using Y in its instructions
PMEM is accessed by EPICS7B when it is fetching instructions
DIO is accessed by EPICS7B when using D in its instructions.
All 18 bits are used when accessing memory via DMA.
The memory map of the system is described in
Table 5
and
Figure 4
.
[1]
DSP control register bit 0 is selecting PROM or BIOSROM.
Table 4:
Two MS bits
00
01
10
11
Memory spaces
Memory space
XMEM
YMEM
PMEM
DIO or IO
Table 5:
Address
IO
0x[3]FFFF
0x[3]FFFE
0x[3]FFC0 to 0x[3]FFFD user defined
DIO
0x[3]FF00 to 0x[3]FF3F
PMEM
0x[2]8000 to 0x[2]97FF
0x[2]0000 to 0x[2]5FFF
0x[2]0000 to 0x[2]00FF
YMEM
0x[1]8000 to 0x[1]87FF
0x[1]0000 to 0x[1]2FFF
XMEM
0x[0]FFC0 to 0x[0]FFFF
0x[0]0000 to 0x[0]2FFF
Memory map
Type
Words
Bits
DSP control register
EPICS7B instruction register
64
32
32
32
64
DIO registers
24
PRAM
PROM
[1]
BIOSROM
[1]
6144
24576
YRAM
YROM
2048
12288
memory mapped registers
XRAM
12288
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