参数资料
型号: XR20V2172L64-0B-EB
厂商: Exar Corporation
文件页数: 16/51页
文件大小: 0K
描述: EVAL BOARD FOR XR20V2170 64QFN
标准包装: 1
系列: *
XR20V2172
23
REV. 1.0.2
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
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).
0x0A
IODir
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0x0B
IOState RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0x0C IOIntEna RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0x0D reserved
-
0
0x0E IOControl RD/WR
0
UART
SW
Reset
GPIO or
Modem
IO Ch B
GPIO or
Modem
IO Ch A
IOLatch
0x0F
EFCR
RD/WR Fast IR
Mode
(Ch B
Only)
0
TX
Disable
RX
Disable
0
Baud Rate Generator Divisor
0x00
DLL
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
LCR[7]=1
LCR
≠0xBF
0x01
DLM
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0x02
DLD
RD/WR
Bit-7
Bit-6
4X
Mode
8X Mode
Frac-
tional
Divisor
Bit-3
Frac-
tional
Divisor
Bit-2
Frac-
tional
Divisor
Bit-1
Frac-
tional
Divisor
Bit-0
LCR[7]=1
LCR
≠0xBF
EFR[4]=1
Enhanced Registers
0x02
EFR
RD/WR
Auto
CTS
Enable
Auto RTS
Enable
Special
Char
Select
Enable
IER [7:4],
ISR [5:4],
FCR[5:4],
MCR[7:5],
DLD
Soft-
ware
Flow
Cntl
Bit-3
Soft-
ware
Flow
Cntl
Bit-2
Soft-
ware
Flow
Cntl
Bit-1
Soft-
ware
Flow
Cntl
Bit-0
LCR=0XBF
0x04
XON1
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0x05
XON2
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0x06
XOFF1
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
0x07
XOFF2
RD/WR
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
TABLE 8: INTERNAL REGISTERS DESCRIPTION. SHADED BITS ARE ENABLED WHEN EFR BIT-4=1
ADDR
REG
NAME
READ/
WRITE
BIT-7
BIT-6
BIT-5
BIT-4
BIT-3
BIT-2
BIT-1
BIT-0
COMMENT
相关PDF资料
PDF描述
UPM1E181MPD6TD CAP ALUM 180UF 25V 20% RADIAL
AQ1051N8S-T INDUCTOR 1.8NH 760MA 0402 SMD
UPS2G3R3MPD1TD CAP ALUM 3.3UF 400V 20% RADIAL
XR20V2172L64-0A-EB EVAL BOARD FOR XR20V2170 64QFN
UPJ1C331MPD6TD CAP ALUM 330UF 16V 20% RADIAL
相关代理商/技术参数
参数描述
XR-210 制造商:EXAR 制造商全称:EXAR 功能描述:FSK MODULATOR / DEMODULATOR
XR-2100CJ 制造商:未知厂家 制造商全称:未知厂家 功能描述:MODEM
XR-2100CP 制造商:未知厂家 制造商全称:未知厂家 功能描述:MODEM
XR-2103 制造商:EXAR 制造商全称:EXAR 功能描述:FSK Modem Filter
XR-2103A 制造商:EXAR 制造商全称:EXAR 功能描述:FSK Modem Filter