Z89175 Datasheet, PDF (62/68 Pages) Zilog, Inc. – Voice Processing Controllers

Z89175/Z89176
Voice Processing Controllers
Z8^® EXPANDED REGISTER FILE REGISTERS (Continued)
Table 20. DSP Control Register (F) 0CH [Read/Write]
Field
DSPCON (F) 0CH
Position
Z8_SCLK
76------
DSP_Reset
--5-----
DSP_Run
Reserved
---4----
----32--
Attributes
R/W
R
W
R/W
Value
00
01
1x
0
1
0
1
xx
IntFeedback
------1-
-------0
R
W
1
0
R
W
1
0
Zilog
Label
OSC/8
OSC/4
OSC/2
Return “0”
No effect
Reset DSP
Halt_DSP
Run_DSP
Return “0”
No effect
FB_DSP_INT2
Set DSP_INT2
No effect
FB_Z8_IRQ3
Clear IRQ3
No effect
WDTMR (F) 0F
D7 D6 D5 D4 D3 D2 D1 D0
* Default setting after RESET
WDT TAP
00
01*
10
11
INT RC OSC
5 ms
15 ms
25 ms
100 ms
EXTERNAL CLOCK
256 Tpc
512 Tpc
1024 Tpc
4096 Tpc
WDT During HALT
0 OFF
1 ON*
WDT During STOP
0 OFF
1 ON*
XTAL1/INT RC Select for WDT
0 On-Board RC
1 XTAL
W No effect
R Always "1"
Figure 66. Watch-Dog Timer Mode Register
(F) 0FH [Read/Write]
62
PRELIMINARY
DS97TAD0100