Z86017/Z16017 PCMCIA Interface Solution
Product Specification
76
WORD-TO-BYTE OPERATION
Figure 10 illustrates Word-to-Byte timing and Figure 11 depicts the
Word-to-Byte Mode data path.
PC_HA<10:0>
PC_HCE1
PC_HWE
or PC_HOE
PC_WAIT
ATA_HA<2:0>
ATA_HCS<1:0>
Valid Even Address
Adr+1
ATA_HIOR
ATA_HIOW
ATA_IOCHRDY
Internal Clock
(PC_MCLK_IN /2)
Count 0
Count 0
1
2
Count 0
2
1
2
Count 0
Internal Strobe
Delay (HIOR/HIOW)
1
Count 0
Internal Access
Delay (HIOR/HIOW)
HIOR/HIOW strobe delay equals
IOCHRDY time plus strobe width
period programmed in the Bus
Control register 2Fh bits <5:4>
HIOR/HIOW strobe access
equals access delay period
programmed in the Bus Control
register 2Fh bits <7:6>
Figure 10. Word-to-Byte Timing
PS012002-1201
Programming Internal Registers
ZILOG [ ZILOG, INC. ]
