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参数资料
| 型号： | AT76C551 |
| 厂商： | ATMEL CORP |
| 元件分类： | 通信及网络 |
| 英文描述： | Single Chip Bluetooth Controller(单芯片蓝牙技术控制器) |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP176 |
| 封装： | LQFP-176 |
| 文件页数： | 41/51页 |
| 文件大小： | 845K |
| 代理商： | AT76C551 |
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AT76C551
41
UART Register Set
In the following table the register file and its fields are briefly presented. A more detailed description is provided in the fol-
lowing sections.
Table
Receive Holding Register (US_RHR)
Addr: 700000 hex
R
8-bits
Note:
Default Value: 00 hex
Table
Transmit Holding Register (US_THR)
Addr: 700000 hex
W
8-bits
Note:
Default Value: 00 hex
Table
UART Register File and Register Fields
Addr.
(hex)
Register
BIT-7
BIT-6
BIT-5
BIT-4
BIT-3
BIT-2
BIT-1
BIT-0
700000
US_RHR
X
X
X
X
X
X
X
X
700000
US_THR
X
X
X
X
X
X
X
X
700004
US_IER
Transmitt
er empty
interrupt
Receive
Time-out
interrupt
Parity
Error
interrupt
Framing
Error
interrupt
Overrun
Error
interrupt
Receive
break
interrupt
Transmit
holding
register
Receive
holding
register
700008
US_FCR
RCVR
trigger
(MSB)
RCVR
trigger
(LSB)
0
0
DMA
mode
select
0
RCVR
FIFO
reset
FIFO
enable
70000C
US_PMR
Character
length
(MSB)
Character
length
(MSB)
Number of
stop bits
(MSB)
Number of
stop bits
(LSB)
Parity
mode
(PTM2)
Parity
mode
(PTM1)
Parity
type
(PT)
0
700010
US_MR
Channel
mode
(CHM1)
Channel
mode
(CHM0)
0
0
0
0
0
0
700014
US_CSR
Transmitt
er empty
Receive
Time-out
Parity
Error
Framing
Error
Overrun
Error
Receive
Break
Transmit
holding
register
ready
Receive
holding
register
ready
700018
US_CR
Rx
Enable
Reset
status bit
Tx enable
Restart
Time-out
Tx
Reset
Rx
Reset
Stop
Break
Start
Break
70001C
US_BL
MSB
LSB
700020
US_BM
MSB
LSB
700024
US_RTO
MSB
LSB
700028
US_TTG
MSB
LSB
70002C
US_MCI
DSR
RI
CD
CTS
DSR
change
RI change
CD
change
CTS
change
70002C
US_MCO
DTR
RTS
0
0
0
0
0
0
700030
US_MCC
0
LB RI
value
LB CD
value
MC Loop
Back
enable
DSR
change
mask
RI change
mask
CD
change
mask
CTS
change
mask
Bits
7
…
0
US_RHR
[7:0]
Received data
Bits
7
…
0
US_THR
[7:0]
Transmit data
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