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参数资料
| 型号： | GP2021 |
| 厂商： | Mitel Networks Corporation |
| 英文描述： | GPS 12 channel Correlator Advance Information |
| 中文描述： | 全球定位系统12通道相关器研究进展信息 |
| 文件页数： | 6/62页 |
| 文件大小： | 372K |
| 代理商： | GP2021 |
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14
GP2021
PLL_LOCK
NRESET_OP
MICRO_CLK
4 CYCLES
MCLK
50ms
NRESET_IP
NRESET_OP
MICRO_CLK
4 CYCLES
Fig. 11 : PLL_LOCK Hardware Reset Generation
Fig. 12 : NRESET_IP Hardware Reset Generation
Discrete I/O
The GP2021 contains a number of pins which may be used
as discrete inputs or discrete outputs for general purpose
system monitoring and control applications. The actual pins
which may be used for each function vary according to the
application and the interface mode of the GP2021.Table 5
shows a list of possible discrete inputs and outputs and the
modes in which they may be used. The level on all discrete
inputs can be read from the IO_CONFIG register. The status
of
the
DISCIP
pin
may
also
be
read
from
ACCUM_STATUS_B. The discrete outputs are controlled via
either the SYSTEM_SETUP or IO_CONFIG registers.
Discrete Inputs
Pin Name
Read Location
Conditions for use as Discrete Input
NRW/DISCIP3
IO_CONFIG
Standard Interface mode.
NOPC/NINTELMOT
IO_CONFIG
ARM System mode (debug disabled).
NMREQ/DISCIP2
IO_CONFIG
Standard Interface mode.
NBW/WRPROG
IO_CONFIG
Motorola mode only.
DISCIO
IO_CONFIG
DISCIO configured as discrete Input.
NBRAM/DISCIP4
IO_CONFIG
Standard Interface Mode.
MULTI_FN_IO
IO_CONFIG
MULTI_FN_IO configured as discrete input.
SIGN0, MAG0
IO_CONFIG
Single real input mode (GP2010 or GP2015) front end using
SIGN0, MAG0.
SIGN1, MAG1
IO_CONFIG
Single real input mode (GP2010 or GP2015) front end using
SIGN1, MAG1.
DISCIP1
IO_CONFIG
Always available – dedicated Discrete Input.
ACCUM_STATUS_B
RXA
IO_CONFIG
UART Channel A not used.
RXB
IO_CONFIG
UART Channel B not used.
Discrete Outputs
Pin Name
Configuration
Possible Outputs
Location
DISCOP
SYSTEM_SET_UP
High, Low, CH0 Dump, TIMEMARK, 100kHz Square Wave, Scan Out.
DISCIO
IO_CONFIG
High, Low, TIMEMARK, 100kHz Square Wave.
MULTI_FN_IO
IO_CONFIG
High, Low, TIMEMARK, 100kHz Square Wave.
Table 5 : Discrete Input/Output Configuration
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