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HT46RB70 Scheda tecnica(PDF) 34 Page - Holtek Semiconductor Inc

Il numero della parte HT46RB70
Spiegazioni elettronici  48-pin SSOP
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Produttore elettronici  HOLTEK [Holtek Semiconductor Inc]
Homepage  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT46RB70 Scheda tecnica(HTML) 34 Page - Holtek Semiconductor Inc

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HT46RB70
Rev. 1.40
34
2017-04-05
读写 FIFO 时必须按照一定时序进行。通过设定 MISC 寄存器位,MCU 对 FIFO 可以执行读、写和
清除动作。下表为一些读、写和清除 FIFO 的时序。
动作
MISC 设置和状态
读 FIFO0 时序
00H→01H→延时 2
μs,检查是否为 41H(准备好)或 01H(未准备
好)→从 FIFO0 寄存器读取*→03H→02H
写 FIFO0 时序
02H→03H→延时 2
μs,检查是否为 43H(准备好)或 03H(未准备
好)→写数据到 FIFO0 寄存器*→01H→00H
检查 FIFO0 是否可读
00H→01H 延时 2
μs,检查是否为 41H(准备好)或 01H(未准备好)
→00H
检查 FIFO0 是否可写
02H→03H 延时 2
μs,检查是否为 43H(准备好)或 03H(未准备好)
→02H
从 FIFO0 内读取 0 封包
00H→01H→延时 2
μs,检查是否为 81H→读取(01H) →03H→
02H
写 0 封包到 FIFO0 内
02H→03H→延时 2
μs,检查是否为 03H→07H→06H→00H
读或写 FIFO
注意:*:在两次读与写之间必须存在 2
μs 延时
Req.
Ready
Tx
Read FIFO Timing
Req.
Ready
Tx
Write FIFO Timing
标号
R/W
功能
0
DATATG*
R/W
触发此位,所有 DATA 封包都会从 DATA0 开始
1
SETIO1**
R/W
设置端点 1 为输入或输出(1/0),默认为输入(1)
2
SETIO2**
R/W
设置端点 2 为输入或输出(1/0),默认为输入(1)
3
SETIO3**
R/W
设置端点 3 为输入或输出(1/0),默认为输入(1)
4
SETIO4**
R/W
设置端点 4 为输入或输出(1/0),默认为输入(1)
5
SETIO5**
R/W
设置端点 5 为输入或输出(1/0),默认为输入(1)
6~7
未用,读出为“0”
SETIO(27H) 寄存器
注意:*USB 设置:当主机发出“set Configuration”,数据管道会先发出 DATA0。所以,当设备接收到“set Configuration”
封包,必须设置此位以确保数据从 DATA0 开始。
**必须设置数据管道为输入管道还是输出管道。主要用于防止主机错误的发送 IN 或 OUT 封包或禁止端点。


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