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UM0842 Datasheet(PDF) 32 Page - STMicroelectronics

Part # UM0842
Description  EVALSPEAr320PLC evaluation board for the SPEAr320
PDF  50 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0842 Datasheet(HTML) 32 Page - STMicroelectronics

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CPU board hardware description
UM0842
32/50
Doc ID 16542 Rev 4
A.3.2
Switch 2 settings
Note:
1
If SW2-1 and SW2-2 are both "OFF", B0 (pin PL_GPIO51) is in "HiZ state" and can be
controlled from the application board.
2
If SW2-3 and SW2-4 are both "OFF", B1 (pin PL_GPIO52) is in "HiZ state" and can be
controlled from the application board.
3
If SW2-5 and SW2-6 are both "OFF", B2 (pin PL_GPIO53) is in "HiZ state" and can be
controlled from the application board.
4
If SW2-7 and SW2-8 are both "OFF", B3 (pin PL_GPIO54) is in "HiZ state" and can be
controlled from the application board.
5
SW2-1 and SW2-2 "ON": INVALID Condition
SW2-3 and SW2-4 "ON": INVALID Condition
SW2-5 and SW2-6 "ON": INVALID Condition
SW2-7 and SW2-8 "ON": INVALID Condition
Table 33.
Switch 2 settings
Boot from
SW2-1 SW2-2 SW2-3 SW2-4 SW2-5 SW2-6 SW2-7 SW2-8
USB_BOOT
Off
On
Off
On
Off
On
Off
On
ETH (parameter from I2C
ROM)
On
Off
Off
On
Off
On
Off
On
ETH (parameter from SPI
ROM)
Off
On
On
Off
Off
On
Off
On
Serial NOR (default setting)
On
Off
On
Off
Off
On
Off
On
Parallel NOR 8 (EMI with ACK)
Off
On
Off
On
On
Off
Off
On
Parallel NOR 16 (EMI with
ACK)
On
Off
Off
On
On
Off
Off
On
Parallel NAND 8
Off
On
On
Off
On
Off
Off
On
Parallel NAND 16
On
Off
On
Off
On
Off
Off
On
Reserved for SPI
Off
On
Off
On
Off
On
On
Off
Reserved for I²C
On
Off
Off
On
Off
On
On
Off
UART_BOOT
Off
On
On
Off
Off
On
On
Off
BootROM bypass
On
Off
On
Off
Off
On
On
Off
Parallel NOR 8 (EMI without
ACK)
Off
On
Off
On
On
Off
On
Off
Parallel NOR 16 (EMI without
ACK)
On
Off
Off
On
On
Off
On
Off
Reserved
Off
On
On
Off
On
Off
On
Off
Reserved
On
Off
On
Off
On
Off
On
Off



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