- 您現(xiàn)在的位置：買賣IC網 > PDF目錄352476 > A42MX16-1CQ100M (Electronic Theatre Controls, Inc.) IC I2C PROG PENTA ULDO 20-MLP PDF資料下載
參數(shù)資料
| 型號： | A42MX16-1CQ100M |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | IC I2C PROG PENTA ULDO 20-MLP |
| 中文描述： | 40MX和42MX FPGA系列 |
| 文件頁數(shù)： | 28/120頁 |
| 文件大?。?/td> | 854K |
| 代理商： | A42MX16-1CQ100M |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁當前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁
15
4958B–AUTO–11/10
Atmel ATA6285/ATA6286 [Preliminary]
3.5.4.1
The X-register, Y-register, and Z-register
The registers R26..R31 have some added functions to their general purpose usage. These reg-
isters are 16-bit address pointers for indirect addressing of the data space. The three indirect
address registers X, Y, and Z are defined as described in Figure 3-4.
Figure 3-4.
The X-, Y-, and Z-registers
In the different addressing modes these address registers have functions as fixed displacement,
automatic increment, and automatic decrement (see the instruction set reference for details).
3.5.5
Stack Pointer
The Stack is mainly used for storing temporary data, for storing local variables and for storing
return addresses after interrupts and subroutine calls. The Stack Pointer Register always points
to the top of the Stack. Note that the Stack is implemented as growing from higher memory loca-
tions to lower memory locations. This implies that a Stack PUSH command decreases the Stack
Pointer.
The Stack Pointer points to the data SRAM Stack area where the Subroutine and Interrupt
Stacks are located. This Stack space in the data SRAM must be defined by the program before
any subroutine calls are executed or interrupts are enabled. The Stack Pointer must be set to
point above 0x100, preferably RAMEND. The Stack Pointer is decremented by one when data is
pushed onto the Stack with the PUSH instruction, and it is decremented by two when the return
address is pushed onto the Stack with subroutine call or interrupt. The Stack Pointer is incre-
mented by one when data is popped from the Stack with the POP instruction, and it is
incremented by two when return address is popped from the Stack with return from subroutine
RET or return from interrupt RETI.
The Atmel AVR Stack Pointer is implemented as two 8-bit registers in the I/O space. The
number of bits actually used is implementation dependent. Note that the data space in some
implementations of the Atmel AVR architecture is so small that only SPL is needed. In this case,
the SPH Register will not be present.
In ATA6289 only SP9 and SP8 of High Byte (SPH) are in use.
15
XH
XL
0
X-register
7
0
7
0
R27(0x1B)
R26 (0x1A)
15
YH
YL
0
Y-register
7
0
7
0
R29 (0x1D)
R28 (0x1C)
15
ZH
ZL
0
Z-register
7
0
7
0
R31 (0x1F)
R30 (0x1E)
相關PDF資料 |
PDF描述 |
|---|---|
| A42MX16-1PL100 | 40MX and 42MX FPGA Families |
| A42MX16-1PL100A | IC TVS BI-DIR 5V 350W SOD-323 |
| A42MX16-1PL100B | 40MX and 42MX FPGA Families |
| A42MX16-1PL100ES | 40MX and 42MX FPGA Families |
| A42MX16-1PL100I | 40MX and 42MX FPGA Families |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| A42MX16-1PL100 | 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:40MX and 42MX FPGA Families |
| A42MX16-1PL100A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:40MX and 42MX FPGA Families |
| A42MX16-1PL100B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:40MX and 42MX FPGA Families |
| A42MX16-1PL100ES | 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:40MX and 42MX FPGA Families |
| A42MX16-1PL100I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:40MX and 42MX FPGA Families |
發(fā)布緊急采購，3分鐘左右您將得到回復。