HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 426

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 15 Host Interface (HIF)
15.3
15.3.1
The HIF can be accessed by combining the HIFCS, HIFRS, HIFWR, and HIFRD pins. Table 15.2
shows the correspondence between combinations of these signals and HIF operations.
Table 15.2 HIF Operations
[Legend]
×: Don't care
15.3.2
When connecting the HIF to an external device, a method like that shown in figure 15.2 should be
used.
Rev. 6.00 Jun. 12, 2007 Page 394 of 610
REJ09B0131-0600
HIFCS
1
0
0
0
0
0
0
Parallel Access
Operation
Connection Method
HIFRS
×
0
1
×
×
0
1
HIFWR
×
1
0
1
0
1
0
Figure 15.2 HIF Connection Example
External device
D15 to D00
HIFRD
×
0
1
0
1
1
0
A02
WR
CS
RD
Operation
No operation (NOP)
Read from register specified by HIFIDX[7:0]
Write to register specified by HIFIDX[7:0]
Read from status register (HIFGSR[7:0])
Write to index register (HIFIDX[7:0])
No operation (NOP)
Setting prohibited
HIFCS
HIFRS
HIFWR
HIFRD
HIFD15 to HIFD00
HIF