参数资料
型号: ST92163N4G0V
厂商: 意法半导体
英文描述: 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS, 20K ROM, 2K RAM, I2C, SCI, & MFT
中文描述: 16位产品全速USB微控制器16端点,20,000光盘和2K的RAM,I2C和脊髓损伤的复合设备,
文件页数: 168/224页
文件大小: 1372K
代理商: ST92163N4G0V
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168/224
ST92163 - SERIAL COMMUNICATIONS INTERFACE (SCI)
SERIAL COMMUNICATIONS INTERFACE
(Cont’d)
INTERRUPT STATUS REGISTER (S_ISR)
R247 - Read/Write
Reset value: undefined
Bit 7 =
OE
: Overrun Error Pending
This bit is set by hardware if thedata inthe Receiv-
er Buffer Register was not read by the CPU before
the nextcharacter was transferred into the Receiv-
er Buffer Register (the previous data is lost).
0: No Overrun Error.
1: Overrun Error occurred.
Bit 6 =
FE
: Framing Error Pending bit
This bit is set by hardware if the received data
word did not have a valid stop bit.
0: No Framing Error.
1: Framing Error occurred.
Note:
In the case where a framing error occurs
when the SCI is programmed in address mode
and is monitoring an address, the interrupt is as-
serted and the corrupted data element is trans-
ferred to the Receiver Buffer Register.
Bit 5 =
PE
: Parity Error Pending
This bit is set by hardware if the received word did
not have the correct even or odd parity bit.
0: No Parity Error.
1: Parity Error occurred.
Bit 4 =
RXAP
: Receiver Address Pending
RXAP is set by hardware after an interrupt ac-
knowledged in the address mode.
0: No interrupt in address mode.
1: Interrupt in address mode occurred.
Note:
The source of this interrupt is given by the
couple of bits (AMEN, AM) as detailed in the IDPR
register description.
Bit 3 =
RXBP
: Receiver Break Pending bit
This bit is set by hardware if the received data in-
put is held low for the full word transmission time
(start bit, data bits, parity bit, stop bit).
0: No breakreceived.
1: Break event occurred.
Bit 2 =
RXDP
: Receiver Data Pending bit.
This bit is set by hardware when data is loaded
into the Receiver Buffer Register.
0: No data received.
1: Data received in Receiver Buffer Register.
Bit 1 =
TXBEM
: Transmitter Buffer Register Emp-
ty
This bit is set by hardware if the Buffer Register is
empty.
0: No Buffer Register Empty event.
1: Buffer Register Empty.
Bit 0 =
TXSEM
: Transmitter Shift Register Empty
This bit is set by hardware if the Shift Register has
completed the transmission of the available data.
0: No ShiftRegister Empty event.
1: Shift Register Empty.
Note:
The Interrupt Status Register bits can be re-
set but cannot be set by the user. The interrupt
source must be cleared by resetting the related bit
when executing the interrupt service routine (natu-
rally the other pending bits should not be reset).
7
0
OE
FE
PE
RXAP
RXBP
RXDP
TXBEM
TXSEM
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相关代理商/技术参数
参数描述
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