參數資料
型號: OX16PCI954
廠商: Electronic Theatre Controls, Inc.
英文描述: Integrated Quad UART and PCI interface
中文描述: 綜合四UART和PCI接口
文件頁數: 34/72頁
文件大小: 656K
代理商: OX16PCI954
7.3
Data Sheet Revision 1.3
Page 34
OX16PCI954
OXFORD SEMICONDUCTOR LTD.
Reset Configuration
7.3.1
After a hardware reset, all writable registers are reset to
0x00, with the following exceptions:
DLL, which is reset to 0x01.
CPR, which is reset to 0x20.
The state of read-only registers following a hardware reset
is as follows:
RHR[7:0]: Indetermnate
RFL[6:0]: 0000000
2
TFL[6:0]: 0000000
2
LSR[7:0]: 0x60 signifying that both the transmtter and the
transmtter FIFO are empty
MSR[3:0]: 0000
2
MSR[7:4]: Dependent on modeminput lines DCD, RI,
DSR and CTS respectively
ISR[7:0]: 0x01, i.e. no interrupts are pending
ASR[7:0]: 1xx00000
2
The reset state of output signals are tabulated below:
Signal
Reset state
SOUT
Inactive High
RTS#
Inactive High
DTR#
Inactive High
Hardware Reset
Table 18: Output Signal Reset State
7.3.2
An additional feature available in the OX16C950 UART is
software resetting of the serial channel. This command has
the same effect on a single channel as a hardware reset
except it does not reset the clock source selections (i.e.
CKS register). To reset the UART write 0x00 to the
Channel Software Reset register ‘CSR’.
Software Reset
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