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ST20-GP6 データシート(PDF) 65 Page - STMicroelectronics

部品番号 ST20-GP6
部品情報  GPS PROCESSOR
PDF  123 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST20-GP6 データシート(HTML) 65 Page - STMicroelectronics

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10.5 Boot source
The CPU boots from ROM, unless the diagnostic control unit (DCU) is configured (via the TAP) to
start in diagnostic mode: in which case code is loaded, and the CPU booted, via the DCU.
10.6 Default configuration
The default configuration is loaded into all four banks on reset. It allows the EMI to read data from a
slow ROM memory. The default parameters are given in Table 10.10.
.
Parameter
Default value
DataDriveDelay
101 (5 phases)
BusReleaseTime
10 (2 cycles)
CEactive
01 (active during read only)
OEactive
01 (active during read only)
BEactive
00 (inactive)
Portsize
Determined by the
BusWidth signal
DeviceType
001 (SRAM/peripheral)
AccessTimeRead
1000 (8+2=10 cycles)
CEe1TimeRead
00 (0 phases)
CEe2TimeRead
00 (0 phases)
OEe1TimeRead
00 (0 phases)
OEe2TimeRead
00 (0 phases)
LatchPoint
0 (1 cycle before end of access cycle)
Table 10.10 Default configuration



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