Z80181 Datasheet, PDF (41/74 Pages) Zilog, Inc. – SMART ACCESS CONTROLLER (SAC™)

Zilog
Z80181
SMART ACCESS CONTROLLER SAC^™
Write Register 13
D7 D6 D5 D4 D3 D2 D1 D0
Write Register 14
D7 D6 D5 D4 D3 D2 D1 D0
TC8
TC9
TC10
TC11
TC12
TC13
TC14
TC15
Upper Byte of
Time Constant
(m)
0 0 0 Null Command
0 0 1 Enter Search Mode
0 1 0 Reset Missing Clock
0 1 1 Disable DPLL
1 0 0 Set Source = BR Generator
1 0 1 Set Source = /RTxC
1 1 0 Set FM Mode
1 1 1 Set NRZI Mode
BR Generator Enable
BR Generator Source
/DTR/Request Function
Auto Echo
Local Loopback
(n)
Write Register 15
D7 D6 D5 D4 D3 D2 D1 D0
0
Zero Count IE
SDLC FIFO Enable
DCD IE
Sync/Hunt IE
CTS IE
Tx Underrun/EOM IE
Break/Abort IE
(o)
Figure 50. Write Register Bit Functions (Continued)
DS971800500
2-41