Host Interface (HI08)
2
-14
DSP56303 User’s Manual
HACK/HACK
HRRQ/HRRQ
PB15
Input
Output
Input or
Output
Disconnected
internally
Host Acknowledge—When the HI08 is programmed to interface with a
single host request host bus and the HI function is selected, this signal
is the Host Acknowledge (HACK) Schmitt-trigger input. The polarity of
the host acknowledge is programmable, but is configured as active-low
(HACK) after reset.
Receive Host Request—When the HI08 is programmed to interface
with a double host request host bus and the HI function is selected, this
signal is the Receive Host Request (HRRQ) output. The polarity of the
host request is programmable, but is configured as active-low (HRRQ)
after reset. The host request may be programmed as a driven or
open-drain output.
Port B 15
When the HI08 is configured as GPIO through the HPCR, this signal is
individually programmed through the HDDR.
This input is 5 V tolerant.
Note: 1. The Wait processing state does not affect the signal state.
Table 2-11. Host Interface (Continued)
Signal Name
Type
State During
Reset or Stop
1
Signal Description
Summary of Contents for DSP56303
Page 1: ...DSP56303 User s Manual 24 Bit Digital Signal Processor DSP56303UM AD Revision 1 January 2001 ...
Page 52: ...JTAG OnCE Interface 2 22 DSP56303 User s Manual ...
Page 114: ...General Purpose Input Output GPIO 5 10 DSP56303 User s Manual ...
Page 212: ...GPIO Signals and Registers 8 26 DSP56303 User s Manual ...
Page 268: ...Interrupt Equates A 22 DSP56303 User s Manual ...
Page 306: ...Programming Sheets B 38 DSP56303 User s Manual ...
Page 320: ...Index 14 DSP56303 User s Manual ...