参数资料
型号: TMDXCNCD28069ISO
厂商: Texas Instruments
文件页数: 47/174页
文件大小: 0K
描述: EVAL PICCOLO CONTROLCARD
标准包装: 1
系列: TMS320F2806x, Piccolo™, C2000™
主要目的: 接口,RS232,GPIO
嵌入式: 是,MCU,32 位
已用 IC / 零件: TMS320F2806x
已供物品:
SPRS698D – NOVEMBER 2010 – REVISED DECEMBER 2012
5.21.1
Enhanced Quadrature Encoder (eQEP) Electrical Data/Timing
Table 5-62 shows the eQEP timing requirement and Table 5-63 shows the eQEP switching
characteristics.
Table 5-62. Enhanced Quadrature Encoder Pulse (eQEP) Timing Requirements(1)
MIN
MAX
UNIT
tw(QEPP)
QEP input period
Asynchronous(2)/Synchronous
2tc(SCO)
cycles
With input qualifier
2[1tc(SCO) + tw(IQSW)]
cycles
tw(INDEXH)
QEP Index Input High time
Asynchronous(2)/Synchronous
2tc(SCO)
cycles
With input qualifier
2tc(SCO) +tw(IQSW)
cycles
tw(INDEXL)
QEP Index Input Low time
Asynchronous(2)/Synchronous
2tc(SCO)
cycles
With input qualifier
2tc(SCO) + tw(IQSW)
cycles
tw(STROBH)
QEP Strobe High time
Asynchronous(2)/Synchronous
2tc(SCO)
cycles
With input qualifier
2tc(SCO) + tw(IQSW)
cycles
tw(STROBL)
QEP Strobe Input Low time
Asynchronous(2)/Synchronous
2tc(SCO)
cycles
With input qualifier
2tc(SCO) +tw(IQSW)
cycles
(1)
For an explanation of the input qualifier parameters, see Table 5-69.
(2)
Refer to the TMS320F28069, TMS320F28068, TMS320F28067, TMS320F28066, TMS320F28065, TMS320F28064, TMS320F28063,
TMS320F28062 Piccolo MCU Silicon Errata (literature number SPRZ342) for limitations in the asynchronous mode.
Table 5-63. eQEP Switching Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
MIN
MAX
UNIT
td(CNTR)xin
Delay time, external clock to counter increment
4tc(SCO)
cycles
td(PCS-OUT)QEP
Delay time, QEP input edge to position compare sync output
6tc(SCO)
cycles
140
Peripheral and Electrical Specifications
Copyright 2010–2012, Texas Instruments Incorporated
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