Pio Interaccess Timing; Figure 8-4.Pio Interaccess Timing - Lucent Technologies DSP1617 Information Manual

Information Manual
April 1998
8.1 PIO Operation
(continued)

8.1.2 PIO Interaccess Timing

The DSP drives PODS and PIDS, and the DSP and external device alternate in driving the PB.
Figure 8-4 shows the timing of mixed active mode inputs and outputs. (See
descriptions of individual input and output transactions.)
CKO
PSEL [2:0]
PODS
FROM DSP
PIDS
FROM DSP
PB
Lucent Technologies Inc.
DSP1611/17/18/27/28/29 DIGITAL SIGNAL PROCESSOR
ACTIVE ACTIVE
WRITE WRITE
Figure 8-4. PIO Interaccess Timing
DRAFT COPY
Parallel I/O (DSP1617 Only)
Section 8.1.1, Active
ACTIVE ACTIVE
READ READ
Mode, for specific
ACTIVE
WRITE
5-4190
8-5