參數(shù)資料
型號(hào): PDIUSBD12D
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
封裝: 7.50 MM , PLASTIC, MS-013, SOT-136-1, SOP-28
文件頁數(shù): 17/35頁
文件大小: 838K
代理商: PDIUSBD12D
Philips Semiconductors
PDIUSBD12
USB interface device with parallel bus
Product data
Rev. 08 — 20 December 2001
17 of 35
9397 750 09238
Koninklijke Philips Electronics N.V. 2001. All rights reserved.
11.3.2
Select Endpoint
Code (Hex) —
00 to 05
Transaction —
read 1 byte (optional)
The Select Endpoint command initializes an internal pointer to the start of the
selected buffer. Optionally, this command can be followed by a data read, which
returns this byte.
11.3.3
Read Endpoint status
Code (Hex) —
80 to 85
Transaction —
read 1 byte
11.3.4
Read last transaction status register
Code (Hex) —
40 to 45
Transaction —
read 1 byte
The Read Last Transaction Status command is followed by one data read that returns
the status of the last transaction of the endpoint. This command also resets the
corresponding interrupt flag in the interrupt register, and clears the status, indicating
that it was read.
FULL/EMPTY:
A ‘1’ indicates the buffer is full, ‘0’ indicates an empty buffer.
STALL:
A ‘1’ indicates the selected endpoint is in the stall state.
Fig 11. Select Endpoint command: bit allocation.
Fig 12. Read Endpoint status: bit allocation.
RESERVED
BUFFER 0 FULL
BUFFER 1 FULL
ENDPOINT STALLED
7
0
6
0
5
0
4
x
3
x
2
0
x
1
x
0
SETUP PACKET
RESERVED
004aaa056
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