DSP56307/D View Datasheet(PDF) - Motorola => Freescale
Part Name
Description
Manufacturer
DSP56307/D Datasheet PDF : 156 Pages
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Signals/Connections
HI08
Table 1-10 Host Interface (Continued)
Signal Name Type
HRW
Input
State
During
Reset
Input
Signal Description
Host Read/WriteÑWhen HI08 is programmed to
interface a single-data-strobe host bus and the HI
function is selected, this signal is the Host
Read/Write (HRW) input.
HRD/HRD
Input
Host Read DataÑWhen HI08 is programmed to
interface a double-data-strobe host bus and the HI
function is selected, this signal is the HRD strobe
Schmitt-trigger input. The polarity of the data strobe
is programmable, but is configured as active-low
(HRD) after reset.
PB11
Input or
Output
Port B 11ÑWhen the HI08 is configured as GPIO
through the HPCR, this signal is individually
programmed as an input or output through the
HDDR.
HDS/HDS
Input
Input
Note: This signal has a weak keeper to maintain the last state
even if all drivers are tri-stated.
Host Data StrobeÑWhen HI08 is programmed to
interface a single-data-strobe host bus and the HI
function is selected, this signal is the host data strobe
(HDS) Schmitt-trigger input. The polarity of the data
strobe is programmable, but is configured as
active-low (HDS) following reset.
HWR/HWR
Input
Host Write DataÑWhen HI08 is programmed to
interface a double-data-strobe host bus and the HI
function is selected, this signal is the host write data
strobe (HWR) Schmitt-trigger input. The polarity of
the data strobe is programmable, but is configured as
active-low (HWR) following reset.
PB12
Input or
Output
Port B 12ÑWhen the HI08 is configured as GPIO
through the HPCR, this signal is individually
programmed as an input or output through the
HDDR.
Note: This signal has a weak keeper to maintain the last state
even if all drivers are tri-stated.
Not Recommended for New Design
1-16
DSP56307 Technical Data
MOTOROLA
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