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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 33/84頁 |
| 文件大?。?/td> | 276K |
| 代理商： | TUSB5052B |
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5–1
5 USB Registers
5.1
FUNADR: Function Address Register
This register contains the device function address.
RSV
FA6
FA5
FA4
FA3
FA2
FA1
FA0
7
6
5
4
3
2
1
0
R/O
R/W
R/W
R/W
R/W
R/W
R/W
R/W
BIT
NAME
RESET
FUNCTION
6–0
FA[6:0]
00
These bits define the current device address assigned to the function. The MCU writes a value to this register as
a result of the SET-ADDRESShost command.
7
RSV
0
Reserved = 0
5.2
USBSTA: USB Status Register
All bits in this register are set by the hardware and are cleared by the MCU when writing a 1 to the proper bit location
(writing a 0 has no effect). In addition, each bit can generate an interrupt if its corresponding mask bit is set (R/C
notation indicates read and clear only by the MCU).
RSTR
SUSR
RESR
UR2RI
UR1RI
SETUP
WAKEUP
STPOW
7
6
5
4
3
2
1
0
R/C
R/C
R/C
R/C
R/C
R/C
R/C
R/C
BIT
NAME
RESET
FUNCTION
0
STPOW
0
SETUP overwrite bit. Set by hardware when setup packet is received while there is already a packet in the setup
buffer.
STPOW = 0
MCU can clear this bit by writing a 1 (Writing 0 has no effect).
STPOW = 1
SETUP overwrite
1
WAKEUP
0
Remote wake-up bit
WAKEUP = 0 The MCU can clear this bit by writing a 1 (Writing 0 has no effect).
WAKEUP = 1 Remote wake-up request from WAKEUP pin
2
SETUP
0
SETUP transaction received bit. As long as SETUP is 1, IN and OUT on endpoint-0 will be NAKed, regardless of
their real NAK bits value.
SETUP = 0
MCU can clear this bit by writing a 1 (Writing 0 has no effect).
SETUP = 1
SETUP transaction received
3
UR1RI
0
UART1 RI status bit
UR1RI = 0
UR1RI = 1
The MCU can clear this bit by writing a 1 (Writing 0 has no effect).
Ring detected
4
UR2RI
0
UART1 RI status bit
UR2RI = 0
UR2RI = 1
The MCU can clear this bit by writing a 1 (Writing 0 has no effect).
Ring detected
5
RESR
0
Function resume request bit
RESR = 0
RESR = 1
The MCU can clear this bit by writing a 1 (Writing 0 has no effect).
Function resume is detected.
6
SUSR
0
Function suspended request bit. This bit is set in response to a global or selective suspend condition.
FSUSP = 0
The MCU can clear this bit by writing a 1 (Writing 0 has no effect).
FSUSP = 1
Function suspend is detected.
7
RSTR
0
Function reset request bit. This bit is set in response to host initiating a port reset. This bit will not be affected by
USB function reset.
FRST = 0
The MCU can clear this bit by writing a 1 (Writing 0 has no effect).
FRST = 1
Function reset is detected.
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