Motorola DSP56156 Manual page 313

Application:
HOST
Port B
Control Register (PBC)
X:$FFC0 Read/Write
Reset = $0000
Host Control Register (HCR)
X:$FFC4 Read/Write
Reset = $00
MOTOROLA
DSP56156 Host Programming Sheet
Port B
15 14 13 12 11 10 9
* * * * * * * * * * * * * * *
0 0 0
0
Figure C-21 Control Register (PBC)
HOST – DSP SIDE
Host Receive Interrupt Enable
0 = ∏ Disable1 = ∏ Enable — Interrupt on HRDF
Host Transmit Interrupt Enable
0 = ∏ Disable1 = ∏ Enable — Interrupt on HTDE
Host Command Interrupt Enable
0 = ∏ Disable1 = ∏ Enable — Interrupt on HCP
Host Flags
General Purpose Read/Write Flags
Figure C-22 Host Control Register (HCR)
PROGRAMMING SHEETS
Date:
Programmer:
8 7
0 0 0 0 0 0 0
0
= Reserved, Program as zero
*
7
* * *
0
= Reserved, Program as zero
*
Sheet 1 of 5
Port B Control
0 = General Purpose I/O
1 = Host Interface
6 5 4 3 2 1 0
BC
0 0 0 0 0 1
0 1
6 5 4 3 2 1
HF3 HF2 HCIE HTIE HRIE
0 0
C - 29
0