参数资料
型号: XR17V354IB-E4-EVB
厂商: Exar Corporation
文件页数: 13/66页
文件大小: 0K
描述: EVAL BRD FOR XR17V354-E4 176BGA
产品培训模块: PCIe UARTs
标准包装: 1
主要目的: 接口,UART
嵌入式:
已用 IC / 零件: XR17V354
已供物品:
其它名称: 1016-1612
XR17V354IB-E4-EVB-ND
TIM E RM SB Register
B it-1 5
B it-1 4
B it-1 3
B it-1 2
B it-1 1
B it-1 0
B it-9
B it-8
TIM ERLSB Register
B it-7
B it-6
B it-5
B it-4
B it-3
B it-2
B it-1 B it-0
16-B it T im er/C ou nte r P rog ra m m ab le R e gisters
XR17V354
20
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
REV. 1.0.3
REGA [15:8] Register
Reserved.
TIMERCNTL [7:0] Register
The bits [3:0] of this register are used to issue commands. The commands are self-clearing, so reading this
register does not show the last written command. Reading this register returns a value of 0x01 when the Timer
interrupt is enabled and there is a pending Timer interrupt. It returns a value of 0x00 at all other times. The
default settings of the Timer, upon power-up, a hardware reset or upon the issue of a ’Timer Reset’ command
are:
Timer Interrupt Disabled
Re-triggerable mode selected
Internal 125MHz clock (master) or 62.5MHz clock (slave) selected as clock source
Timer output not routed to MPIO[0]
Timer stopped
TABLE 9: TIMER CONTROL REGISTERS
TIMERCNTL [7:4] Reserved
TIMERCNTL [3:0] These bits are used to invoke a series of commands that control the function of the Timer/Counter.
The commands 1100 to 1111 are reserved.
0001: Enable Timer Interrupt
0010: Disable Timer Interrupt
0011: Select One-shot mode
0100: Select Re-triggerable mode
0101: Select Internal 125MHz clock (master) or 62.5MHz clock (slave) as clock input for the Timer
0110: Select External Clock input through the TMRCK pin for the Timer
0111: Route Timer output to MPIO[0] pin
1000: De-route Timer output from MPIO[0]
1001: Start Timer
1010: Stop Timer
1011: Reset Timer
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