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參數(shù)資料
| 型號： | PDUSBD12PWDH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 總線控制器 |
| 英文描述： | nullUSB interface device with parallel bus |
| 中文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PDSO28 |
| 文件頁數(shù)： | 19/35頁 |
| 文件大?。?/td> | 838K |
| 代理商： | PDUSBD12PWDH |
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Philips Semiconductors
PDIUSBD12
USB interface device with parallel bus
Product data
Rev. 08 — 20 December 2001
19 of 35
9397 750 09238
Koninklijke Philips Electronics N.V. 2001. All rights reserved.
11.3.5
Read buffer
Code (Hex) —
F0
Transaction —
read multiple bytes (max. 130)
The Read Buffer command is followed by a number of data reads, which returns the
contents of the selected endpoint data buffer. After each read, the internal buffer
pointer is incremented by 1.
The buffer pointer is not reset to the top of the buffer by the Read Buffer command.
This means that reading or writing a buffer can be interrupted by any other command
(except for Select Endpoint).
The data in the buffer are organized as follows:
byte 0: reserved; can have any value
byte 1: number/length of data bytes
byte 2: data byte 1
byte 3: data byte 2
etc.
The first two bytes will be skipped in the DMA read operation. Thus, the first read will
get Data byte 1, the second read will get Data byte 2, etc. The PDIUSBD12 can
determine the last byte of this packet through the EOP termination of the USB packet.
11.3.6
Write buffer
Code (Hex) —
F0
Transaction —
write multiple bytes (max. 130)
The Write Buffer command is followed by a number of data writes, which load the
endpoints buffer. The data must be organized in the same way as described in the
Read Buffer command. The first byte (reserved) should always be ‘0’.
During DMA write operation, the first two bytes will be bypassed. Thus, the first write
will write into Data byte 1, the second write will write into Data byte 2, etc. For
non-isochronous transfer (bulk or interrupt), the buffer should be completely filled
before the data is sent to the host and a switch to the next buffer occurs. The
exception is at the end of DMA transfer indicated by activation of EOT_N, when the
current buffer content (completely full or not) will be sent to the host.
Remark:
There is no protection against writing or reading over a buffer’s boundary or
against writing into an OUT buffer or reading from an IN buffer. Any of these actions
could cause an incorrect operation. Data in an OUT buffer are only meaningful after a
1011
Overflow Error, the received packet was longer than the available buffer
space
Bitstuff Error
Wrong DATA PID; the received DATA PID was not the expected one
1101
1111
Table 10:
Error
code (Binary)
Error codes
…continued
Description
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PDIUSBD12D | nullUSB interface device with parallel bus |
| PDIUSBD12PW | nullUSB interface device with parallel bus |
| PDIUSBH11A | Universal Serial Bus hub(通用串行總線集線器) |
| PDIUSBH11ANB | Universal Serial Bus Hub |
| PDIUSBH11AD | Universal Serial Bus Hub |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PDUSBP11APWDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Universal Serial Bus Transceiver |
| PDUSIDEBRKT | 制造商:Tripp Lite 功能描述:RACK ENCLOSURE VERTICAL INSTALLATION KIT PDU, SURGE, POWER S - Bulk 制造商:Tripp Lite 功能描述:KIT PDU, SURGE, POWER STRIP 制造商:Tripp Lite 功能描述:Tripp Lite Rack Enclosure Vertical Installation Kit PDU, Surge, Power Strip |
| PDU-V101 | 功能描述:PHOTODIODE UV 0.31MM SQ TO-46 RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 光學(xué) - 光電檢測器 - 光電二極管 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 波長:850nm 顏色 - 增強(qiáng)型:- 光譜范圍:400nm ~ 1100nm 二極管類型:引腳 nm 下響應(yīng)率:0.62 A/W @ 850nm 響應(yīng)時間:5ns 電壓 - (Vr)（最大）:50V 電流 - 暗（標(biāo)準(zhǔn)）:1nA 有效面積:1mm² 視角:150° 工作溫度:-40°C ~ 100°C 封裝/外殼:徑向，5mm 直徑（T 1 3/4） 其它名稱:475-2649-6 |
| PDU-V101Q | 功能描述:PHOTODIODE UV W/QW.31MM SQ TO-46 RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 光學(xué) - 光電檢測器 - 光電二極管 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 波長:850nm 顏色 - 增強(qiáng)型:- 光譜范圍:400nm ~ 1100nm 二極管類型:引腳 nm 下響應(yīng)率:0.62 A/W @ 850nm 響應(yīng)時間:5ns 電壓 - (Vr)（最大）:50V 電流 - 暗（標(biāo)準(zhǔn)）:1nA 有效面積:1mm² 視角:150° 工作溫度:-40°C ~ 100°C 封裝/外殼:徑向，5mm 直徑（T 1 3/4） 其它名稱:475-2649-6 |
| PDU-V102 | 功能描述:PHOTODIODE UV 0.87MM SQ TO-46 RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 光學(xué) - 光電檢測器 - 光電二極管 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 波長:850nm 顏色 - 增強(qiáng)型:- 光譜范圍:400nm ~ 1100nm 二極管類型:引腳 nm 下響應(yīng)率:0.62 A/W @ 850nm 響應(yīng)時間:5ns 電壓 - (Vr)（最大）:50V 電流 - 暗（標(biāo)準(zhǔn)）:1nA 有效面積:1mm² 視角:150° 工作溫度:-40°C ~ 100°C 封裝/外殼:徑向，5mm 直徑（T 1 3/4） 其它名稱:475-2649-6 |
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