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參數(shù)資料
| 型號： | RSC-4128 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Speech Recognition Processor |
| 中文描述： | 語音識別處理器 |
| 文件頁數(shù)： | 11/49頁 |
| 文件大?。?/td> | 690K |
| 代理商： | RSC-4128 |
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Data Sheet
RSC-4128
Stack
There is a 16-level, 16-bit stack for saving the program counter for subroutine calls and interrupt requests. The
stack pointer wraps around on overflow or underflow. When the stack read and write pointers indicate that stack
overflow has occurred, the “stkoflo” bit in the “flags” register is set. Once set, this bit can only be cleared by a
processor reset. The bit may be tested by software, but it performs no other function. When the stack read and
write pointers indicate that stack is full, the “stkfull” bit in the “flags” register is set. This bit will be reset once the
stack is not full.
Stack Pointers
11
P/N 80-0206-J
2004 Sensory Inc.
The 16-level stack has two 4-bit pointers, stack write and stack read. They are normally written by the processor
upon execution of a “CALL” instruction or an interrupt.
The stack also has a 6-bit index register “stkNdx” (register F6) and an 8-bit data port register “stkData” (register F7)
that are used to access the stack contents as bytes in a register file under program control. The contents of the
stack location selected by the “stkNdx” register may be read or written by the processor via
MOV
instructions at the
“stkData” register. The stack register index must be written first, then the stack data can be read.
The Stack read and write pointers (4 bits each) are also mapped to addresses accessible via the Stack Register
Index.
Stack contents accessed by value in stack register index (“stkNdx”, register F6)
00H
Stack0 Lo
08H
Stack4 Lo
10H
Stack8 Lo
01H
Stack0 Hi
09H
Stack4 Hi
11H
Stack8 Hi
02H
Stack1 Lo
0AH
Stack5 Lo
12H
Stack9 Lo
03H
Stack1 Hi
0BH
Stack5 Hi
13H
Stack9 Hi
04H
Stack2 Lo
0CH
Stack6 Lo
14H
StackA Lo
05H
Stack2 Hi
0DH
Stack6 Hi
15H
StackA Hi
06H
Stack3 Lo
0EH
Stack7 Lo
16H
StackB Lo
07H
Stack3 Hi
0FH
Stack7 Hi
17H
StackB Hi
20-
2FH
3DH
(4bits only)
Register RAM
The RSC-4128 has a total physical register RAM space of 896 bytes, divided into 14 banks of 64 bytes each. There
is an additional 64 bytes of Special Function Registers (SFRs). Two of the register RAM banks are directly
addressed as unbanked memory, and the other 12 banks are banked.
Addressing 896 bytes requires an address width of 10 bits. (architecturally, an 11 bit address is implemented to
allow for future increases in the register RAM). Logical register space addresses are 8 bits only (256 bytes), so 5
bank select bits in the “bank” register (register FC) are used so to access the full 896 bytes. The 256 byte logical
register space map is divided into 4 different 64 byte sections:
000H-03FH
unbanked register RAM
040H-07FH
unbanked register RAM
080H-0BFH
banked register RAM
0C0H-0FFH
SFRs
Bits [4:0] of the “bank” register determine which physical bank of 64 bytes is logically mapped to addresses 080H-
0BFH. When an address falls in the logically mapped range of 080H-0BFH, the lower 6 bits of the address (64 byte
address) are used directly and the bank select bits are used as the upper 5 bits of the 11-bit physical register RAM
address. When the address falls below the logically mapped range of 080H-0BFH, the lower 8 bits of the address
are used directly to address the unbanked register RAM. When the address falls in the logically mapped range for
the SFRs (0C0H-0FFH) the SFRs are addressed, not the register RAM.
18H
19H
1AH
1BH
1CH
1DH
1EH
1FH
3FH
StackC Lo
StackC Hi
StackD Lo
StackD Hi
StackE Lo
StackE Hi
StackF Lo
StacKF Hi
StackReadPtr
(4bits only)
(unused)
30-
(unused)
3EH
StackWritePtr
相關(guān)PDF資料 |
PDF描述 |
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| RSC-4128100LQFP | Speech Recognition Processor |
| RSC-412864LQFP | Speech Recognition Processor |
| RSC4128 | Speech Recognition Processor |
| RT1A3906 | |
| RT1N44BC | TRANSISTOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| RSC-4128100LQFP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Recognition Processor |
| RSC-412864LQFP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Recognition Processor |
| RSC-4128DIE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech Recognition Processor |
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