w65c265s Western Design Center, Inc., w65c265s Datasheet - Page 16

• Manufacturer Part Number: w65c265s
• Description: W65c265s 16?bit Microcontroller
• Manufacturer: Western Design Center, Inc.

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1.10 The Parallel Interface Bus (PIB)
The Parallel Interface Bus (PIB) is used to communicate instructions and data to and from task oriented
Register 7 may have a primary role of communicating data or addresses between processors.
processors, smart peripherals, co-processors, and parallel processors.
Register 3 may have a primary role of communicating commands or opcodes between processors.
6
PIRS 2,1,0 Register Address
5
111
110
101
100
011
010
001
000
4
Figure 1-10 ACSRx Bit Assignments
Figure 1-11 The PIB Registers
Receiver Error Flag
3
Software Semaphore
2
7
6
5
4
3
2
1
0
Receiver Enable
Odd or Even Parity Select
PIB Enable Register (PIBER)
PIB Flag Register (PRBFR)
1
Seven or Eight Bit Data Select
Automatic Handshake
Automatic Handshake
Parity Enable
Transmitter Interrupt Source Select
0
Transmitter Enable
ACSRx ($DF70, $DF72,
$DF74, $DF76)
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