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參數(shù)資料
| 型號： | XR16V698IQ100-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 26/58頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART FIFO 32B OCTAL 100QFP |
| 標(biāo)準(zhǔn)包裝： | 66 |
| 特點(diǎn)： | * |
| 通道數(shù)： | 8 |
| FIFO's： | 32 字節(jié) |
| 規(guī)程： | RS485 |
| 電源電壓： | 2.25 V ~ 3.6 V |
| 帶自動流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動位檢測功能： | 是 |
| 帶調(diào)制解調(diào)器控制功能： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-BQFP |
| 供應(yīng)商設(shè)備封裝： | 100-QFP（14x20） |
| 包裝： | 托盤 |
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XR16V698
32
2.25V TO 3.6V HIGH PERFORMANCE OCTAL UART WITH 32-BYTE FIFO
REV. 1.0.3
NOTE: MCR bits 2 and 3 (OP1 and OP2 outputs) are not available in the XR16V698. They are present for 16C550 compat-
ibility during Internal loopback, see
4.0
INTERNAL REGISTER DESCRIPTIONS
4.1
Receive Holding Register (RHR) - Read Only
4.2
Transmit Holding Register (THR) - Write Only
4.3
Interrupt Enable Register (IER) - Read/Write
The Interrupt Enable Register (IER) masks the interrupts from receive data ready, transmit empty, line status
and modem status registers. These interrupts are reported in the Interrupt Status Register (ISR) and also
encoded in INT (INT0-INT3) register in the Device Configuration Registers.
4.3.1
IER versus Receive FIFO Interrupt Mode Operation
When the receive FIFO (FCR BIT-0 = a logic 1) and receive interrupts (IER BIT-0 = logic 1) are enabled, the
RHR interrupts (see ISR bits 3 and 4) status will reflect the following:
A.
The receive data available interrupts are issued to the host when the FIFO has reached the programmed
trigger level. It will be cleared when the FIFO drops below the programmed trigger level.
B.
FIFO level will be reflected in the ISR register when the FIFO trigger level is reached. Both the ISR register
status bit and the interrupt will be cleared when the FIFO drops below the trigger level.
C.
The receive data ready bit (LSR BIT-0) is set as soon as a character is transferred from the shift register to
the receive FIFO. It is reset when the FIFO is empty.
4.3.2
IER versus Receive/Transmit FIFO Polled Mode Operation
When FCR BIT-0 equals a logic 1 for FIFO enable; resetting IER bits 3:0 enables the XR16V698 in the FIFO
polled mode of operation. Since the receiver and transmitter have separate bits in the LSR either can be used
in the polled mode by selecting respective transmit or receive control bit(s).
A.
LSR BIT-0 indicates there is data in RHR (non-FIFO mode) or RX FIFO (FIFO mode).
B.
LSR BIT-1 indicates an overrun error has occurred and that data in the FIFO may not be valid.
C.
LSR BIT 2-4 provides the type of receive data errors encountered for the data byte in RHR, if any.
D.
LSR BIT-5 indicates THR (non-FIFO mode) or TX FIFO (FIFO mode) is empty.
E.
LSR BIT-6 indicates when both the transmit FIFO and TSR are empty.
F.
LSR BIT-7 indicates a data error in at least one character in the RX FIFO.
1 0 1 1
Rsvd
R
0
1 1 0 0
XCHAR
R
0
TX Xon
Indicator
TX Xoff
Indicator
Xon Det.
Indicator
Xoff Det.
Indicator
Self clear
after read
1 1 0 0
XOFF1
W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
1 1 0 1
XOFF2
W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
1 1 1 0
XON1
W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
1 1 1 1
XON2
W
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
TABLE 12: UART CHANNEL CONFIGURATION REGISTERS DESCRIPTION. SHADED BITS ARE ENABLED BY EFR BIT-4.
ADDRESS
A3-A0
REG
NAME
READ/
WRITE
BIT-7
BIT-6
BIT-5
BIT-4
BIT-3
BIT-2
BIT-1
BIT-0
COMMENT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR16V698IQ100TR-F | 制造商:Exar Corporation 功能描述:UART 8-CH 32Byte FIFO 2.5V/3.3V 100-Pin PQFP T/R 制造商:Exar Corporation 功能描述:XR16V698IQ100TR-F |
| XR16V794 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL |
| XR16V794_08 | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL |
| XR16V794IV | 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.25V TO 3.6V QUAD UART WITH FRACTIONAL |
| XR16V794IV-0A-EVB | 功能描述:UART 接口集成電路 Supports V794 64 ld TQFP,ISA Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
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