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參數(shù)資料
| 型號(hào)： | CY7C64113 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Full-Speed USB (12 Mbps) Function(全速 USB (12 Mbps)性能) |
| 中文描述： | 全速USB（12 Mbps）的功能（全速的USB（12 Mbps）的性能） |
| 文件頁數(shù)： | 14/46頁 |
| 文件大?。?/td> | 381K |
| 代理商： | CY7C64113 |
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CY7C64013
CY7C64113
PRELIMINARY
14
5.4
During a reset, the program stack pointer (PSP) is set to 0x00 and
“
grows
”
upward from this address. The PSP may be set by
firmware, using the MOV PSP,A instruction. The PSP supports interrupt service under hardware control and CALL, RET, and
RETI instructions under firmware control. The PSP is not readable by the firmware.
During an interrupt acknowledge, interrupts are disabled and the 14-bit program counter, carry flag, and zero flag are written as
two bytes of data memory. The first byte is stored in the memory addressed by the PSP, then the PSP is incremented. The second
byte is stored in memory addressed by the PSP, and the PSP is incremented again. The overall effect is to store the program
counter and flags on the program
“
stack
”
and increment the PSP by two.
The return from interrupt (RETI) instruction decrements the PSP, then restores the second byte from memory addressed by the
PSP. The PSP is decremented again and the first byte is restored from memory addressed by the PSP. After the program counter
and flags have been restored from stack, the interrupts are enabled. The overall effect is to restore the program counter and flags
from the program stack, decrement the PSP by two, and re-enable interrupts.
The call subroutine (CALL) instruction stores the program counter and flags on the program stack and increments the PSP by two.
The return from subroutine (RET) instruction restores the program counter but not the flags from the program stack and decre-
ments the PSP by two.
8-Bit Program Stack Pointer (PSP)
5.4.1
The CY7C64x13 microcontrollers provide 256 bytes of data RAM. Normally, the SRAM is partitioned into four areas: program
stack, user variables, data stack, and USB endpoint FIFOs. The following is one example of where the program stack, data stack,
and user variables areas could be located.
Data Memory Organization
Notes:
1.
2.
Refer to Section 5.5 for a description of DSP.
Endpoint sizes are fixed by the Endpoint Size Bit (I/O register 0x1F, Bit 7), see
Table 18-1
.
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)
After reset
Address
0x00
8-bit DSP
8-bit PSP
Program Stack Growth
(Move DSP
[1]
)
8-bit DSP
user selected
Data Stack Growth
User variables
USB FIFO space for five endpoints
[2]
0xFF
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PDF描述 |
|---|---|
| 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) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY7C64113A-PVXC | 功能描述:IC MCU 8K FULL SPEED USB 48-SSOP 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 |
| CY7C64113C-PVXC | 功能描述:IC MCU 8K FULL SPEED USB 48-SSOP 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 |
| CY7C64113-PVC | 功能描述:IC MCU 8K FULL SPEED USB 48-SSOP 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 |
| CY7C64113-PVCT | 制造商:Cypress Semiconductor 功能描述: |
| CY7C6421528PVXC | 制造商:Cypress Semiconductor 功能描述: |
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