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PC87591L 数据表(PDF) 82 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 PC87591L
功能描述  LPC Mobile Embedded Controllers
PDF  437 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

PC87591L 数据表(HTML) 82 Page - National Semiconductor (TI)

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4.0 Embedded Controller Modules (Continued)
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Revision 1.07
Core Bus Monitoring
The core bus monitoring cycle is a non-data transfer bus cycle. It takes a single clock cycle - T1. On this cycle:
●
The address pins display the address of the internal device accessed on the core bus.
●
CBRD indicates the direction of the access (read or write).
●
BE0-1 indicate which data bus bytes are accessed (lower or upper).
●
BST0-2 display the core bus status.
The core bus monitoring cycle, as shown in Figure 26, is generated only when bit 1 (OBR) in BCFG register is 1.
CLK
A0-12,
T1
SEL0-1
WR0-1
D0-15
RD
BST0-2
SELIO
A16-19
CBRD
BE0-1
Figure 26. Core Bus Monitoring Bus Cycle
Bus State



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