Download DSP56002 User`s Manual Rev. 1

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Sheet 1 of 5
HOST
Port B
PBC1 PBC0
Function
0
0 General Purpose I/O (Reset Condition)
0
1
Host Interface
1
0 Host Interface (with HACK pin as GPIO)
1
1
Reserved
Port B
Control Register (PBC)
X:$FFE0 Read/Write
Reset = $000000
23
*0
• • • 15
14 13 12 11 10 9
8
7
6
5
4
3
2
*0 *0 *0 *0 *0 *0 *0 *0 *0 *0 *0 *0 *0 *0
$0
$0
1
0
PBC1 PBC0
$0
= Reserved, Program as zero
*
Figure B-13 Port B Control Register (PBC)
DSP SIDE
Host Receive Interrupt Enable
0 = ∏ Disable1 = ∏ Enable — Interrupt on HRDF
Host Transmit Interrupt Enable
0 = ∏ Disable1 = ∏ Enable — Interrupt on HTDE
Host Command Interrupt Enable
0 = ∏ Disable1 = ∏ Enable — Interrupt on HCP
Host Flags
General Purpose Read/Write Flags
23
Host Control Register (HCR)
X:$FFE8 Read/Write
Reset = $00
*0
•• •
7
6
5
*0 *0 *0
4
3
2
1
0
HF3 HF2 HCIE HTIE HRIE
= Reserved, Program as zero
*
Figure B-14 Host Control Register (HCR)
B - 16
MOTOROLA