參數(shù)資料
型號(hào)： MCS7840
廠商： Electronic Theatre Controls, Inc.
英文描述： USB-2.0 to Four Serial Ports
中文描述： 的USB 2.0 4個(gè)串行端口
文件頁(yè)數(shù)： 11/41頁(yè)
文件大小： 447K
代理商： MCS7840
MCS7840
USB-2.0 to Four Serial Ports
Rev.
1.2
Page 11
Interrupt Enable Register (IER):
Serial channel interrupts are enabled using the Interrupt Enable Register (IER).
Register:
Description:
Offset:
Permissions:
Access Condition:
Default Value:
IER
Interrupt Enable Register
1
Read/Write
LCR[7] = 0
0x0C
Bit[7]
Bit[6]
Bit[5]
Bit[4]
Sleep
Mode
Bit[3]
Modem
Int Mask
Bit[2]
Rx Stat
Int Mask
Bit[1]
Tx Rdy
Int Mask
Bit[0]
Rx Rdy
Int Mask
Reserved
Bit
Description
Rx Rdy
Interrupt Mask
Tx Rdy
Interrupt Mask
Operation
0
Logic 0: Disable the Receiver Ready Interrupt
Logic 1: Enable the Receiver Ready Interrupt
Logic 0: Disable the Transmitter Ready Interrupt
Logic 1: Enable the Transmitter Ready Interrupt
Logic 0: Disable the Receiver Status Interrupt
(Normal Mode)
Logic 1: Enable the Receiver Status Interrupt
(Normal Mode)
Logic 0: Disable the Modem Status Interrupt
Logic 1: Enable the Modem Status Interrupt
Logic 0: Disable Sleep Mode
Logic 1: Enable Sleep Mode where by the internal clock
of the channel is switched OFF
Reserved
1
2
Rx Stat
Interrupt Mask
3
Modem
Interrupt Mask
4
Sleep Mode
[7:5]
Reserved
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