參數(shù)資料
型號: XR16V598IQ100-F
廠商: Exar Corporation
文件頁數(shù): 5/58頁
文件大?。?/td> 0K
描述: IC UART FIFO 16B OCTAL 100QFP
標準包裝: 66
特點: *
通道數(shù): 8
FIFO's: 16 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:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
安裝類型: 表面貼裝
封裝/外殼: 100-BQFP
供應商設備封裝: 100-QFP(14x20)
包裝: 托盤
XR16V598
13
REV. 1.0.3
2.25V TO 3.6V HIGH PERFORMANCE OCTAL UART WITH 16-BYTE FIFO
2.9
THR and RHR Register Locations
The THR and RHR register addresses for channel 0 to channel 7 are shown in Table 5 below. The THR and
RHR for channels 0 to 7 are located at address 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60 and 0x70
respectively. Transmit data byte is loaded to the THR when writing to that address and receive data is
unloaded from the RHR register when reading that address. Both THR and RHR registers are 16C550
compatible in 8-bit format, so each bus operation can only write or read in bytes.
FIGURE 7. RECEIVER OPERATION IN NON-FIFO MODE
FIGURE 8. RECEIVER OPERATION IN FIFO AND AUTO RTS FLOW CONTROL MODE
Receive Data Shift
Register (RSR)
Receive
Data Byte
and Errors
RHR Interrupt (ISR bit-2)
Receive Data
Holding Register
(RHR)
RXFIFO 1
16X or 8X or 4X Clock
Receive Data Characters
Data Bit
Validation
Error
Tags in
LSR bits
4:2
Receive Data Shift
Register (RSR)
RXFIFO1
16X or 8X or 4X Clock
Error
T
a
gs
(64-
sets)
E
rro
rT
a
g
s
i
n
LSR
bi
ts
4:
2
16 bytes by 11-bit
wide
FIFO
Receive Data Characters
FIFO Trigger=8
Example:
- RX FIFO trigger level selected at 8 bytes
(See Note Below)
Data fills to 14
Data falls to 4
Data Bit
Validation
Receive
Data FIFO
Receive
Data
Receive Data
Byte and Errors
RHR Interrupt (ISR bit-2) programmed for
desired FIFO trigger level.
FIFO is Enabled by FCR bit-0=1
RTS# de-asserts when data fills above the flow
control trigger level to suspend remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
RTS# re-asserts when data falls below the flow
control trigger level to restart remote transmitter.
Enable by EFR bit-6=1, MCR bit-1.
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