HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 456

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 9
(1)
Figure 9.38 shows the basic timing of the PCMCIA IC memory card interface. If areas 5 and 6 in
the physical space are specified as the PCMCIA interface, accessing the common memory areas in
areas 5 and 6 automatically accesses the IC memory card interface. If the external bus frequency
(CKIO) increases, the setup times and hold times for the address pins (A25 to A0) to RD and WE,
card enable signals (CE1A, CE2A, CE1B, CE2B), and write data (D15 to D0) become
insufficient. To prevent this error, the LSI can specify the setup times and hold times for areas 5
and 6 in the physical space independently, using CS5BWCR and CS6BWCR. In the PCMCIA
interface, as in the normal space interface, a software wait or hardware wait can be inserted using
the WAIT pin. Figure 9.39 shows the PCMCIA memory bus wait timing.
Rev. 3.00 Jan. 18, 2008 Page 394 of 1458
REJ09B0033-0300
Read
Write
Basic Timing for Memory Card Interface
Figure 9.38
Bus State Controller (BSC)
D15 to D0
A25 to A0
D15 to D0
RD/WR
CExx
CKIO
WE
RD
BS
Basic Access Timing for PCMCIA Memory Card Interface
Tpcm1
Tpcm1w
Tpcm1w
Tpcm1w
Tpcm2