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参数资料
| 型号： | MIC3000BMLTR |
| 厂商： | MICREL INC |
| 元件分类： | 数字传输电路 |
| 英文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, QCC24 |
| 封装： | 4 X 4 MM, MLF-24 |
| 文件页数： | 47/68页 |
| 文件大小： | 444K |
| 代理商： | MIC3000BMLTR |
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October 2004
51
M9999-101204
MIC3000
Micrel
Data Ready Flags (DATARDY)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
TRDY
VRDY
IRDY
TXRDY
RXRDY
read only
reserved
Default Value
0000 0000b = 00h
Serial Address
A2h = 1010001b
Byte Address
254 = FEh
When the A/D conversion for a given parameter is completed and the results available to the host, the corresponding
data ready flag will be set. The flag will be cleared when the host reads the corresponding result register.
Bit(s)
Function
Operation
D[7]
TRDY
Temperature data ready flag
0 = old data; 1 = new data ready
D[6]
VRDY
Voltage data ready flag
0 = old data; 1 = new data ready
D[5]
IRDY
Bias current data ready flag
0 = old data; 1 = new data ready
D[4]
TXRDY
Transmit power data ready flag
0 = old data; 1 = new data ready
D[3]
RXRDY
Receive power data ready flag
0 = old data; 1 = new data ready
D[2:0]
Reserved
USER Control Register (USRCTL)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
PORM
PORS
IE
APCSEL
reserved
read/write
read only
read/write
reserved
Default Value
0010 0000b = 20h
Serial Address
A2h = 1010001b
Byte Address
255 = FFh
This register provides for control of the nominal APC setpoint and management of interrupts by the end-user.
APCSEL[1:0] select which of the APC setpoint registers, APCSET0, APCSET1, or APCSET2 are used as the nominal
automatic power control setpoint.
IE must be set for any interrupts to occur. If PORM is set, the power-on event will generate an interrupt and warm
resets using RST will not generate a POR interrupt. When a power-on interrupt occurs, assuming PORM=1, PORS will
be set. PORS will be cleared and the interrupt output de-asserted when USRCTL is read by the host. If IE is set while /
INT is asserted, /INT will be de-asserted. The host must still clear the various status flags by reading them. If PORM is
set following the setting of PORS, PORS will remain set, and /INT will not be de-asserted, until USRCTL is read by the
host.
PORM, IE, and APCSEL are non-volatile and will be maintained through power and reset cycles. A valid USER
password is required for access to this register.
Bit
Function
Operation
D[7]
Reserved
Always write as zero; reads undefined.
D[6]
PORM
Power-on interrupt mask
1 = POR interrupts enabled; 0 = disabled; read/write;
non-volatile.
D[5]
PORS
Power-on interrupt flag
1 = POR interrupt occurred; 0 = no POR interrupt;
read-only.
D[4]
IE
Global interrupt enable
1 = enabled; 0 = disabled; read/write; non-volatile.
D[3:2]
APCSEL
Selects APC setpoint register
00 = APCSET0, 01 = APCSET1, 10 = APCSET2;
11 = reserved; read/write; non-volatile.
D[1:0]
Reserved
Always write as zero; reads undefined.
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