MC68PM302带PCMCIA接口的集成多协议处理器参考手

1. PC_ABUF pin not shown in Figure 5-2
2. p5-10, “but rather drive the ABUF pin” should be changed to “but rather drive the
PC_ABUF pin.”
3. Figure 5-5. The “ABUF” label should be changed to PC_ABUF
4. p5-25, ABUF description change “..but instead will drive an address buffer control
line..” to “...but instead will drive the PC_ABUF signal with the appropriate timing.”
Section 6 - Signal Description
1. p6-2, Fig 6-1, Replace “PC_ABUF” with “PC_ABUF “
2. p6-3, table 6-1. Replace “PC_ABUF” with “PC_ABUF “
3. p6-6, BUSW signal paragraph. Change “After reset, this pin becomes PC_ABUF.” to
“After reset, this pin becomes PC_ABUF described on page 6-30.”
4. p6-30, Add a signal “PC_ABUF “
Description:
This pin is BUSW (described on page 6-6) during reset. After reset, this pin is driven high. If the ABUF bit is set in the PCMR register, this pin will assert during PCMCIA accesses to enable the upper address bits (PC_A23-PC_A12) to be driven directly onto the 68K bus. See page 5-10 for more information.