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參數(shù)資料
| 型號(hào)： | MC68HC05JB4DW |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁(yè)數(shù)： | 125/134頁(yè) |
| 文件大小： | 2440K |
| 代理商： | MC68HC05JB4DW |
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GENERAL RELEASE SPECIFICATION
February 24, 1999
UNIVERSAL SERIAL BUS MODULE
REV
TX1STR — Clear Transmit First Flag
Writing a logic 1 to this write-only bit will clear the TX1ST bit if it is set. Writing a
logic 0 to the TX1STR has no effect. Reset clears this bit.
TX1ST — Transmit First Flag
This read-only bit is set if the Endpoint 0 Data Transmit Flag (TXD0F) is set
when the USB control logic is setting the Endpoint 0 Data Receive Flag
(RXD0F). That is, this bit will be set if an Endpoint 0 Transmit Flag is still set at
the end of an Endpoint 0 reception. This bit lets the rmware know that the
Endpoint 0 transmission happened before the Endpoint 0 reception. Reset
clears this bit.
1 =
IN transaction occurred before SETUP/OUT.
0 =
IN transaction occurred after SETUP/OUT.
ENABLE2 — Endpoint 2 Enable
This read/write bit enables Endpoint 2 and allows the USB to respond to IN
packets addressed to Endpoint 2. Reset clears this bit.
1 =
Endpoint 2 is enabled and can respond to an IN token.
0 =
Endpoint 2 is disabled
ENABLE1 — Endpoint 1 Enable
This read/write bit enables Endpoint 1 and allows the USB to respond to IN
packets addressed to Endpoint 1. Reset clears this bit.
1 =
Endpoint 1 is enabled and can respond to an IN token.
0 =
Endpoint 1 is disabled
STALL2 — Endpoint 2 Force Stall Bit
This read/write bit causes Endpoint 2 to return a STALL handshake when
polled by either an IN or OUT token by the USB Host Controller. Reset clears
this bit.
1 =
Send STALL handshake.
0 =
Default
STALL1 — Endpoint 1 Force Stall Bit
This read/write bit causes Endpoint 1 to return a STALL handshake when
polled by either an IN or OUT token by the USB Host Controller. Reset clears
this bit.
1 =
Send STALL handshake
0 =
Default
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Freescale Semiconductor, Inc.
For More Information On This Product,
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