Motorola DSP56305 User Manual page 638

PROGRAMMING REFERENCE
Application:
GPIO
15
Host Data
Direction Register
DR15
(HDDR)
X:$FFFFC8
Write
Reset = $0
DRx = 1 → HIx is Output
15
Host Data
Register
D15
(HDR)
X:$FFFFC9
Write
Reset = Undefined
DRx holds value of corresponding HI08 GPIO pin.
Function depends on HDDR.
Figure D-22 Host Data Direction and Host Data Registers (HDDR, HDR)
D-38
Port B (HI08)
14 13 12 11 10
DR14 DR13 DR12 DR11 DR10
DRx = 0 → HIx is Input
14 13 12 11 10
D14 D13 D12 D11 D10
DSP56305 User's Manual
9 8 7 6 5
DR9 DR8 DR7 DR6 DR5
9 8 7 6 5
D9 D8 D7 D6 D5
Date:
Programmer:
Sheet 1 of 4
4 3 2 1 0
DR4 DR3 DR2 DR1 DR0
4 3 2 1 0
D4 D3 D2 D1 D0
MOTOROLA