Bus Timing Modes - Intel 8XC196NT User Manual

8XC196NT USER'S MANUAL
V CC
BUSWIDTH
A17:16
AD15:8
ADV#
8XC196
AD7:0
WRH#
WRL#

14.8 BUS TIMING MODES

The device has selectable bus timing modes controlled by the MSEL0 and MSEL1 bits (bits 6
and 7) of CCR1. Figure 14-2 on page 14-8 defines these bit settings. The remainder of this section
describes each mode. Figure 14-22 illustrates the modes together and Table 14-7 summarizes the
differences in their timings.
14-34
A16:15
A15:8
74AC
A14:7
373
LE
D15:8
LE
A7:1
74AC
A6:0
373
Figure 14-21. 16-bit System with RAM
CS#
A16:15
A14:7
D7:0
128K×8
RAM
(High)
A6:0
WE#
CS#
128K×8
RAM
(Low)
WE#
A0294-02