COP688CL Datasheet, PDF (26/40 Pages) National Semiconductor (TI) – General Description

MICROWIRE PLUS (Continued)
FIGURE 13 MICROWIRE PLUS Application
TL DD 9766 – 21
A control flag SKSEL allows either the normal SK clock or
the alternate SK clock to be selected Resetting SKSEL
causes the MICROWIRE PLUS logic to be clocked from the
normal SK signal Setting the SKSEL flag selects the alter-
nate SK clock The SKSEL is mapped into the G6 configura-
tion bit The SKSEL flag will power up in the reset condition
selecting the normal SK signal
TABLE V
This table assumes that the control flag MSEL is set
G4
G5
(SO) (SK)
G4 G5
Config Config Fun Fun
Bit
Bit
Operation
1
1
SO Int MICROWIRE PLUS
SK Master
0
1
TRI- Int MICROWIRE PLUS
STATE SK Master
1
0
SO Ext MICROWIRE PLUS
SK Slave
0
0
TRI- Ext MICROWIRE PLUS
STATE SK Slave
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