Motorola DSP56301 - Manual (Page 115)

General-Purpose Input/Output (GPIO)
Programming the Peripherals 5 -5
5.4.1 Port B Signals and Registers
As shown in Figure 5-2, you can configure twenty-four Port B signals as GPIO signals.
The DSP GPIO Data Register (DATH) registers controls the GPIO functionality of Port B.
Chapter 6, Host Interface (HI32) discusses this register.
Figure 5-2. Host Interface/Port B Detail Signal Diagram
DSP56301
HAD0
HAD1
HAD2
HAD3
HAD4
HAD5
HAD6
HAD7
HAD8
HAD9
HAD10
HAD11
HAD12
HAD13
HAD14
HAD15
HC0/HBE0
HC1/HBE1
HC2/HBE2
HC3/HBE3
HTRDY
HIRDY
HDEVSEL
HLOCK
HPAR
HPERR
HGNT
HREQ
HSERR
HSTOP
HIDSEL
HFRAME
HCLK
HAD16
HAD17
HAD18
HAD19
HAD20
HAD21
HAD22
HAD23
HAD24
HAD25
HAD26
HAD27
HAD28
HAD29
HAD30
HAD31
HRST
HINTA
PVCL HA3
HA4
HA5
HA6
HA7
HA8
HA9
HA10
HD0
HD1
HD2
HD3
HD4
HD5
HD6
HD7
HA0
HA1
HA2
Tie to pull-up or V
CC
HDBEN
HDBDR
HSAK
HBS
HDAK
HDRQ
HAEN
HTA
HIRQ
HWR/HRW
HRD/HDS
Tie to pull-up or V
CC
Tie to pull-up or V
CC
HD8
HD9
HD10
HD11
HD12
HD13
HD14
HD15
HD16
HD17
HD18
HD19
HD20
HD21
HD22
HD23
HRST
HINTA
Leave unconnected
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
PB16
PB17
PB18
PB19
PB20
PB21
PB22
PB23
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Internal disconnect
Leave unconnected
Port B Signals
Host Interface
HP0
HP1
HP2
HP3
HP4
HP5
HP6
HP7
HP8
HP9
HP10
HP11
HP12
HP13
HP14
HP15
HP16
HP17
HP18
HP19
HP20
HP21
HP22
HP23
HP24
HP25
HP26
HP27
HP28
HP29
HP30
HP31
HP32
HP33
HP34
HP35
HP36
HP37
HP38
HP39
HP40
HP41
HP42
HP43
HP44
HP45
HP46
HP47
HP48
HP49
HP50
PVCL
Note: HPxx is a
reference only and is
not a signal name.
GPIO references
formerly designated as
HIOxx have been
renamed PBxx for
consistency with other
Motorola DSPs.
PCI Bus Universal Bus Port B GPIO
Host Port (HP)
Reference
(HI32)/