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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： | 45/51页 |
| 文件大小： | 845K |
| 代理商： | AT76C551 |
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AT76C551
45
Note:
Default Value: 00 hex
Table
Modem Control Outputs (US_MCO)
Addr: 70002C hex
W
8-bits
Note:
Default Value: 00 hex
Table
Modem Control Control Register (US_MCC)
Addr: 700030 hex
R/W
8-bits
Note:
Default Value: 00 hex
The low nibble of the Modem-Control Control register is the
Modem Control interrupt mask register (see US_MCI).
(Note: US_IER can not control the interrupts from modem
control logic.)
The high nibble is used to control the Modem Control Loop-
Back mode. If MC Loop Back enable bit is set, then the
US_MCC bits 5-6 control the values of CD and RI inputs
(see and US_MCI bits 5-6 and 1-2).
When MC Loop-Back mode is enabled, then input pins RI,
CD, DSR, CTS are assigned the following values:
RI
¨
CD
¨
DSR
¨
CTS
¨
bit 6 of register US_MCC (inverted)
bit 5 of register US_MCC (inverted)
pin DTR
pin RTS
General Purpose Registers
Table
Power Down
Addr: D00000 hex
R
/W 6-bits
Note:
Default Value: 00 hex
Bit 2
RI
change
Active high.
Logic 0: No RI change.
Logic 1: The RI input pin has
changed state since the last time
it was read. An interrupt will be
generated
Active high.
Logic 0: No CD change.
Logic 1: The CD input pin has
changed state since the last time
it was read. An interrupt will be
generated
Active high.
Logic 0: No CTS change.
Logic 1: The CTS input pin has
changed state since the last time
it was read. An interrupt will be
generated
Bit 1
CD
change
Bit 0
CTS change
Bit 7
DTR
Control DTR output pin:
Logic 0: Force DTR output
pin to a logic 1
Logic 1: Force DTR output
pin to a logic 0
Control RTS output pin:
Logic 0: Force RTS output
pin to a logic 1
Logic 1: Force RTS output
pin to a logic 0
Reserved
Bit 6
RTS
Bits
5
…
0
Bit 7
Bit 6
Reserved
The compliment of the value of
RI input, when Modem Control
Loop Back mode is enabled.
The compliment of the value of
CD input, when Modem Control
Loop Back mode is enabled.
Modem Control Loop Back
mode enable.
LB RI value
Bit 5
LB CD value
Bit 4
MC LB en
Bit 3
DSR change
mask
This bit when set enables the
DSR change interrupt. If the
DSR change bit of Modem
Control Input Register US_MCI
is set, then an interrupt will occur
This bit when set enables the RI
change interrupt. If the RI
change bit of Modem Control
Input Register US_MCI is set,
then an interrupt will occur
This bit when set enables the
CD change interrupt. If the CD
change bit of Modem Control
Input Register US_MCI is set,
then an interrupt will occur
This bit when set enables the
CTS change interrupt. If the
CTS change bit of Modem
Control Input Register US_MCI
is set, then an interrupt will occur
Bit 2
RI
change mask
Bit 1
CD
change mask
Bit 0
CTS change
mask
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
VCPU
UARTPU
USBPU
BDPRPD
VC power up
UART power up
USB power up
BT Baseband Power Down
reserved
ARM speed
ARMSPD
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