參數(shù)資料
型號: XR16V798IQ-0B-EVB
廠商: Exar Corporation
文件頁數(shù): 18/56頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR XR16V798-B 100QFP
設(shè)計資源: XR17V798/794 Eval Board Schematic
標(biāo)準(zhǔn)包裝: 1
系列: *
XR16V798
25
REV. 1.0.1
HIGH PERFORMANCE 2.25V TO 3.6V OCTAL UART WITH FRACTIONAL BAUD RATE
TIMER OPERATION
The following paragraphs describe the operation of the 16-bit Timer/Counter. The following conventions will be
used in this discussion:
’N’ is the 16-bit value programmed in the TIMER MSB, LSB registers
‘N’ can take any value from 0x0002 to 0xFFFF.
Timer Interrupt
In the one-shot mode, the Timer will issue an interrupt ’N’ clocks after the Timer is started. This is the time
when the Timer times-out in the one-shot mode. In the re-triggerable mode, the Timer will keep issuing an
interrupt every ’N’ clocks. This is shown in Figure 15, where the time between successive time-outs (in re-
triggereble mode) is ’N’ clocks. The Timer interrupt can be cleared by reading the TIMERCNTL register. The
TIMERCNTL will read a value of 0x01 when there is an interrupt and a 0x00 at all other times.
FIGURE 14. TIMER/COUNTER CIRCUIT.
FIGURE 15. INTERRUPT OUTPUT IN ONE-SHOT AND RE-TRIGGERABLE MODES
Timer Interrupt
TMRCK
OSC. CLOCK
TIMERCNTL
COMMANDS
16-Bit
Timer/Counter
Start/Stop
Timer Interrupt Enable/ Disable
Single shot/Re-triggerable
TIMERMSB and TIMERLSB
(16-bit Value)
0
1
Clock Select
0
1
Timer Interrupt
No Interrupt
One-shot Mode
Timer Started
Timer Timed
Out
TIMERCNTL
read
Re-triggerable
Mode
Timer Timed
Out
TIMERCNTL
read
Timer Timed
Out
相關(guān)PDF資料
PDF描述
XR16V798IQ-0A-EVB EVAL BOARD FOR XR16V798-A 100QFP
XR16V698IQ-0B-EVB EVAL BOARD FOR XR16V698-B 100QFP
XR16V698IQ-0A-EVB EVAL BOARD FOR XR16V698-A 100QFP
KIT33972AEWEVBE KIT EVALUATION FOR MC33972
EBM31DCMS CONN EDGECARD 62POS .156 WW
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16V798IQ-F 功能描述:UART 接口集成電路 UART 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
XR16V798IQTR-F 制造商:Exar Corporation 功能描述:UART 8-CH 64Byte FIFO 2.5V/3.3V 100-Pin PQFP T/R
XR-1790 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Audio Schematic
XR17C152 制造商:EXAR 制造商全稱:EXAR 功能描述:5V PCI BUS DUAL UART
XR17C152CM 制造商:EXAR 制造商全稱:EXAR 功能描述:5V PCI BUS DUAL UART