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TMPR3911 Datasheet(PDF) 123 Page - Toshiba Semiconductor

Part # TMPR3911
Description  32-Bit TX System RISC TX39 Family
PDF  462 Pages
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMPR3911 Datasheet(HTML) 123 Page - Toshiba Semiconductor

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Chapter 4 BIU Module
4-23
4.3.5
CS0 Size Configuration
In order for the system to boot properly when powered up for the first time, it is necessary that CS0
and it's associated control be initialized properly since this chip select is used for the Boot ROM. When
RESET is asserted, the ACCVAL1 and ACCVAL2 control bits for CS0 will be set to their maximum
value and Read Page Mode will be disabled. The port size, 16-bit or 32-bit, is configured using the
TESTAIU input pin. If the TESTAIU pin is high during RESET, CS0 is configured as a 32-bit port, and
if TESTAIU is low during RESET, CS0 is configured as a 16-bit port. The CPU Module Section
discusses the TESTAIU pin in more detail.



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