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參數(shù)資料
| 型號(hào)： | TUSB5052B |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | USB to 2-Serial + 1-Parallel Controller With Configurable Optional Hub |
| 中文描述： | USB轉(zhuǎn)2 -串行接口1 -可配置可選并行控制器集線器 |
| 文件頁(yè)數(shù)： | 58/84頁(yè) |
| 文件大?。?/td> | 276K |
| 代理商： | TUSB5052B |
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7–10
7.2.1
Receiver Data Flow
Every UART receiver has a 32-byte FIFO. The receiver FIFO has two trigger levels. One is the high-level mark
(HALT), which is set to 28 bytes, and the other is the low-level mark (RESTORE), which is set to 4-bytes. When the
HALT mark is reached, either the RTS pin goes high or Xoff is transmitted (depending on the auto setting). When the
FIFO reaches the RESTORE mark, then either the RTS pin goes low or Xon is transmitted.
64 Byte
Y-Buffer
64 Byte
X-Buffer
DMA
DMACDR
UBM
X/Y
4
24
Receiver
Halt on Error or Timeout
RDR: 32-Byte FIFO
RTS/DTR = 1
or Xoff Transmitted
RTS/DTR = 0
or Xon Transmitted
Xoff/Xon
CTS/DTR = 1/0
64 Byte
Y-Buffer
64 Byte
X-Buffer
DMA
DMACDR
SIN
SOUT
TDR
Pause/Run
Host
Figure 7–2. Receiver/Transmitter Data Flow
7.2.2
Hardware Flow Control
Figure 7–3 ilustrates the connection necessary to achive hardware flow control. CTS and RTS signals are provided
for this purpose. Auto-CTS and auto-RTS (and Xon/Xoff) can be enabled/disabled independently by programming
the FCRL register.
TUSB5152
SIN
RTS
SOUT
CTS
External Device
SOUT
CTS
SIN
RTS
Figure 7–3. Auto Flow Control Interconnect
7.2.3
Auto-RTS (Receiver Control)
In this mode, the RTS output pin signals the receiver-FIFO status to an external device. The RTS output signal is
controlled by the high-level and low-level marks of the FIFO. When the high-level mark is reached, RTS goes high,
signaling to an external sending device to halt its transfer. Conversely, when the low-level mark is reached, RTS goes
low, signaling to an external sending device to resume its transfer. Data transfer from the FIFO to the X/Y-buffer is
performed by the DMA controller. See section 6.2 for DMA transfer termination condition.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TUSB5052PZ | 功能描述:USB 接口集成電路 5port Hub w/Int Brdg to 2-Serial Ports RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型: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 |
| TUSB5052PZG4 | 功能描述:USB 接口集成電路 5-port Hub with Int Bridge RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型: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 |
| TUSB5152 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:USB to 2-Serial 1-Parallel Controller With Configurable Optional Hub |
| TUSB5152PZ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TUSB522PEVM | 功能描述:EVAL BOARD FOR TUSB522P 制造商:texas instruments 系列:- 零件狀態(tài):在售 主要用途:接口，信號(hào)加強(qiáng)器 嵌入式:- 使用的 IC/零件:TUSB522P 主要屬性:2 通道（雙路） 輔助屬性:LED 狀態(tài)指示器 所含物品:板 標(biāo)準(zhǔn)包裝:1 |
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