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參數(shù)資料
| 型號(hào)： | SL811HST |
| 廠商： | CYPRESS SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 總線控制器 |
| 英文描述： | Embedded USB Host/Slave Controller |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PQCC28 |
| 封裝： | PLASTIC, LCC-28 |
| 文件頁(yè)數(shù)： | 15/29頁(yè) |
| 文件大?。?/td> | 499K |
| 代理商： | SL811HST |
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SL811HS
Document #: 38-08008 Rev. *A
Page 15 of 29
5.3.9
When writing to this register the bits definition are defined as follows.
SOF Counter HIGH/Control2 Register, Address [0FH, READ/WRITE]
Note
.
Any Write to control register 0FH will enable the SL811HS full features bit. This is an internal bit of the SL811HS which
enables additional features not supported by the SL11H. For SL11H hardware backward compatibility, this register should not be
accessed.
The USB-B register set can be used when SL811HS full feature bit is enabled.
Example
. To set up for 1-ms SOF time:
The register 0FH contains the upper 6 bits of the SOF timer. Register 0EH contains the lower 8 bits of the SOF timer. The
timer is based on a 12-MHz clock and uses a counter, which counts down to zero from an initial value. To set the timer for 1
ms time, the register 0EH should be loaded with value E0H, register 0F, Bits 0
–
5 should be loaded with 2EH. To start the timer,
bit 0 of register 05H should be set to
“
1.
”
To load both HIGH and LOW registers with the proper values the user must follow
this sequence:
—
Write E0H to register 0EH.
—
Write 2EH to register 0FH, bits 0
–
5. Bits 6 and 7 should be set for appropriate function: polarity and Master/Slave.
—
Enable bit 0 in register 05H.
Note
. Any Write to the 0FH register will clear the internal frame counter. Register 0FH must be written at least once after power-up.
The internal frame counter is incremented after every SOF timer tick. The internal frame counter is an 11-bit counter, which is
used to track the frame number. The frame number is incremented after each timer tick. Its contents are transmitted to the slave
every millisecond in a SOF packet.
C13
–
C6
Top 8 bits of 14-bit SOF counter.
When read, this register will return the value of the SOF counter divided by 64. The software should use this register to determine
the available bandwidth in the current frame before initiating any USB transfer. In this way, the user will be able to avoid babble
conditions on the USB. For example, to determine the available bandwidth left in a frame:
Maximum number of clock ticks in 1-ms time frame is 12000(1 count per 12-MHz clock period, or approximately 84 ns.) The value
read back in Register 0FH is the (count
×
64)
×
84 ns = time remaining in current frame. USB bit time = one 12-MHz period.
Value of register 0FH
Available bit times left are between
BBH
12000 bits to 11968 (187
×
64) bits
BAH
11968 bits to 11904 (186
×
64) bits
Bit Position
Bit Name
Function
0
–
5
SOF HIGH Counter Register
Write a value or read it back to SOF HIGH Counter Register
6
SL811HS D+/D
–
Data Polarity
Swap
Write/Read, set
“
1
”
change polarity,
“
0
”
no change of polarity
7
SL811HS Master/Slave selection
Write/Read,
“
1
”
is master, else Slave
D7
D6
D5
D4
D3
D2
D1
D0
C13
C12
C11
C10
C9
C8
C7
C6
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SL811S | USB Dual Speed Slave Controller |
| SM-800 | ECL |
| SM-801 | ECL |
| SM-807 | ECL |
| SM-809 | ECL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SL811HST-1.5 | 制造商:Cypress Semiconductor 功能描述:BUS Controller Circuit, 48 Pin, QFP |
| SL811HST-AC | 功能描述:IC USB HOST/SLAVE CTRLR 48LQFP RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器 - 特定應(yīng)用 系列:- 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(lèi)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(lèi)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 |
| SL811HST-AXC | 功能描述:USB 接口集成電路 256B HOST COM RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類(lèi)型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| SL811HST-AXC | 制造商:Cypress Semiconductor 功能描述:IC USB HOST CONTROLLER 48MHZ 制造商:Cypress Semiconductor 功能描述:IC, USB HOST CONTROLLER, 48MHZ 制造商:Cypress Semiconductor 功能描述:IC, USB HOST CONTROLLER, 48MHZ; No. of I/O's:8; Digital IC Case Style:TQFP; No. of Pins:48; RAM Memory Size:256KB; CPU Speed:48MHz; Peripherals:DMA; Embedded Interface Type:USB; Operating Temperature Min:0C; Operating Temperature |
| SL811S | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:USB Dual Speed Slave Controller |
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