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參數(shù)資料
| 型號(hào)： | CY7C64013C |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Full-Speed USB (12-Mbps)(全速USB(12-Mbps)) |
| 中文描述： | 全速USB（12 Mbps）的（全速的USB（12 Mbps）的） |
| 文件頁數(shù)： | 16/51頁 |
| 文件大?。?/td> | 2601K |
| 代理商： | CY7C64013C |
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CY7C64013C
CY7C64113C
Document #: 38-08001 Rev. *B
Page 16 of 51
5.5
The data stack pointer (DSP) supports PUSH and POP instructions that use the data stack for temporary storage. A PUSH
instruction pre-decrements the DSP, then writes data to the memory location addressed by the DSP. A POP instruction reads
data from the memory location addressed by the DSP, then post-increments the DSP.
During a reset, the DSP is reset to 0x00. A PUSH instruction when DSP equals 0x00 writes data at the top of the data RAM
(address 0xFF). This writes data to the memory area reserved for USB endpoint FIFOs. Therefore, the DSP should be indexed
at an appropriate memory location that does not compromise the Program Stack, user-defined memory (variables), or the USB
endpoint FIFOs.
For USB applications, the firmware should set the DSP to an appropriate location to avoid a memory conflict with RAM dedicated
to USB FIFOs. The memory requirements for the USB endpoints are described in Section 18.2. Example assembly instructions
to do this with two device addresses (FIFOs begin at 0xD8) are shown below:
MOV A,20h
; Move 20 hex into Accumulator (must be D8h or less)
SWAP A,DSP ; swap accumulator value into DSP register
8-Bit Data Stack Pointer (DSP)
5.6
The CY7C64013C and CY7C64113C microcontrollers support three addressing modes for instructions that require data
operands: data, direct, and indexed.
Address Modes
5.6.1
“Data” address mode refers to a data operand that is actually a constant encoded in the instruction. As an example, consider the
instruction that loads A with the constant 0xD8:
MOV A,0D8h
This instruction requires two bytes of code where the first byte identifies the “MOV A” instruction with a data operand as the
second byte. The second byte of the instruction is the constant “0xD8.” A constant may be referred to by name if a prior “EQU”
statement assigns the constant value to the name. For example, the following code is equivalent to the example shown above:
DSPINIT: EQU 0D8h
MOV A,DSPINIT
Data (Immediate)
5.6.2
“Direct” address mode is used when the data operand is a variable stored in SRAM. In that case, the one byte address of the
variable is encoded in the instruction. As an example, consider an instruction that loads A with the contents of memory address
location 0x10:
MOV A,[10h]
Normally, variable names are assigned to variable addresses using “EQU” statements to improve the readability of the assembler
source code. As an example, the following code is equivalent to the example shown above:
buttons: EQU 10h
MOV A,[buttons]
Direct
5.6.3
“Indexed” address mode allows the firmware to manipulate arrays of data stored in SRAM. The address of the data operand is
the sum of a constant encoded in the instruction and the contents of the “X” register. Normally, the constant is the “base” address
of an array of data and the X register contains an index that indicates which element of the array is actually addressed:
array: EQU 10h
MOV X,3
MOV A,[X+array]
This would have the effect of loading A with the fourth element of the SRAM “array” that begins at address 0x10. The fourth
element would be at address 0x13.
Indexed
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CY7C64113C | Full-Speed USB (12-Mbps)(全速USB(12-Mbps)) |
| CY7C64013 | Full-Speed USB (12 Mbps) Function(全速 USB (12 Mbps)性能) |
| CY7C64113 | Full-Speed USB (12 Mbps) Function(全速 USB (12 Mbps)性能) |
| CY7C64713 | EZ-USB FX1 USB Microcontroller Full-speed USB Peripheral Controller(EZ-USB FX1 USB微控制器，全速USB外設(shè)控制器) |
| CY7C64714 | EZ-USB FX1 USB Microcontroller Full-speed USB Peripheral Controller(EZ-USB FX1 USB微控制器，全速USB外設(shè)控制器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C64013C-PXC | 功能描述:IC MCU 8K FULL SPEED USB 28DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:M8™ 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標(biāo)準(zhǔn)包裝:250 系列:- 應(yīng)用:網(wǎng)絡(luò)處理器 核心處理器:4Kc 程序存儲(chǔ)器類型:- 控制器系列:- RAM 容量:16K x 8 接口:以太網(wǎng)，UART，USB 輸入/輸出數(shù):- 電源電壓:1.8V, 3.3V 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:208-LQFP 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:PG-LQFP-208 其它名稱:SP000314382 |
| CY7C64013C-SXC | 功能描述:8位微控制器 -MCU Full Spd USB 12-Mbps Function RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| CY7C64013C-SXCT | 功能描述:8位微控制器 -MCU Full Spd USB 12-Mbps Function RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| CY7C64013-SC | 功能描述:IC MCU 8K FULL SPEED USB 28SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:M8™ 產(chǎn)品變化通告:Product Discontinuation 26/Aug/2009 標(biāo)準(zhǔn)包裝:250 系列:- 應(yīng)用:網(wǎng)絡(luò)處理器 核心處理器:4Kc 程序存儲(chǔ)器類型:- 控制器系列:- RAM 容量:16K x 8 接口:以太網(wǎng)，UART，USB 輸入/輸出數(shù):- 電源電壓:1.8V, 3.3V 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:208-LQFP 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:PG-LQFP-208 其它名稱:SP000314382 |
| CY7C64013-SXC | 制造商:Cypress Semiconductor 功能描述:8BIT MCU USB SMD 64013 SOIC28 |
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