Z89175 Datasheet, PDF (38/68 Pages) Zilog, Inc. – Voice Processing Controllers

Z89175/Z89176
Voice Processing Controllers
Z8^® FUNCTIONAL DESCRIPTION (Continued)
Zilog
DSP Clock
÷2
D7, D6
(F) OC
(DSP CON)
÷2
D0,D1
(SMR)
÷ 16
÷2
OSC
T0, T2, T3
Internal Data Bus
Write
Write
Read
PRE0
Initial Value
Register
T0
Initial Value
Register
T0
Current Value
Register
÷4
Internal
Clock
6-Bit
Down
Counter
8-bit
Down
Counter
IRQ4
External Clock
Clock
Logic
÷4
Internal Clock
Gated Clock
Triggered Clock
TIN P31
6-Bit
Down
Counter
÷2
8-Bit
Down
Counter
TOUT
P36
IRQ5
PRE1
Initial Value
Register
T1
Initial Value
Register
T1
Current Value
Register
Write
Write
Read
Internal Data Bus
Figure 24. Counter/Timer Block Diagram
38
PRELIMINARY
DS97TAD0100