HD6417727BP160CV Datasheet, PDF (408/1098 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/ SH7700 Series

Section 12 Bus State Controller (BSC)
12.3.6 PCMCIA Interface
In this LSI, setting the A5PCM bit in BCR1 to 1 makes the bus interface for physical space area 5
an IC memory card and I/O card interface as stipulated in JEIDA version 4.2 (PCMCIA2.1).
Setting the A6PCM bit to 1 makes the bus interface for physical space area 6 an IC memory card
and I/O card interface as stipulated in JEIDA version 4.2.
When the PCMCIA interface is used, a bus size of 8 or 16 bits can be set by bits A5SZ1 and
A5SZ0, or A6SZ1 and A6SZ0, in BCR2.
Figure 12.24 shows an example of PCMCIA card connection to this LSI. To enable active
insertion of the PCMCIA cards (i.e. insertion or removal while system power is being supplied), a
3-state buffer must be connected between this LSI's bus interface and the PCMCIA cards.
As operation in big-endian mode is not explicitly stipulated in the JEIDA/PCMCIA specifications,
the PCMCIA interface for this LSI in big-endian mode is stipulated independently.
However, the WAIT signal is ignored in the following three cases:
• When writing to an external address area using DMA 16-byte transfer in dual address mode
• When transferring data from a DACK-equipped external device to an external address area
using DMA 16-byte transfer in single address mode
• During cache write-back access
Rev.6.00 Mar. 27, 2009 Page 350 of 1036
REJ09B0254-0600