參數(shù)資料
型號(hào)： PCF50732
廠商： NXP Semiconductors N.V.
英文描述： Baseband and audio interface for GSM
中文描述： 用于GSM基帶和音頻接口
文件頁(yè)數(shù)： 39/64頁(yè)
文件大?。?/td> 322K
代理商： PCF50732
1999 May 03
39
Philips Semiconductors
Objective specification
Baseband and audio interface for GSM
PCF50732
13.3
Descriptions of the VSP instruction set
13.3.1
C
ONVENTIONS
In the descriptions of the VSP instruction set:
A = the 30-bit accumulator
I = the 6-bit index register
r.a. = a 6-bit register address
p.n. = a 3-bit port number (address)
coeff = a 12-bit coefficient
f.l. = a 3-bit flag descriptor
addr = a 9-bit address
stack = a one entry deep return address stack
PC = a 9-bit program counter
o.a. = the 9-bit old address
s.i. = small integer
X = don’t care during a read/or write access.
13.3.2
LDA
INSTRUCTION
The LDA (Load accumulator) instruction is used to load data into the VSP’s accumulator. Flags affected are
EQ0 and EQ1.
Table 35
LDA instruction
13.3.3
STO
INSTRUCTION
The STO (Store accumulator) instruction is used to store data into register RAM or output ports. No flags are affected.
Table 36
STO instruction
15 14 13 12 11 10 9 8 7 6 5 4 3
2
1
0
OPERATION
coeff
→
A
R(r.a.)
→
A
R(r.a. + I)
→
A LDA i <r.a.>
ASSEMBLER
NAME
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
coefficient
LDA c <coeff> load coefficient
LDA r <r.a.>
0
0
0
0
1
0
0
1
1
0
0 X X X
1 X X X
0 X X X X X X port number P(p.n.)
→
A
1
small integer
0 X X X X X X
X
register address
register address
load register
load register indexed
load port
load integer
load index
LDA p <p.n.>
LDA s <s.i.>
LDA x
s.i.
→
A
I
→
A
X
X
15 14 13 12 11 10 9 8 7 6 5 4 3
2
1
0
OPERATION
A
→
R(r.a.)
A
→
R(r.a. + I) STO i <r.a.>
ASSEMBLER
NAME
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
1
0 X X X
1 X X X
0 X X X X X X port number A
→
P(p.n.)
register address
register address
STO r <r.a.>
store register
store register indexed
store port
STO p <p.n.>
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