12
Signal name
Pin #
Type(I/O)
Signal description
ADDR[0]
56
I
ADDRESS BUS:
Allows host microprocessor to perform
ADDR[1]
57
register selection within the HDMP-3001.
ADDR[2]
58
ADDR[3]
63
ADDR[4]
64
ADDR[5]
65
ADDR[6]
66
ADDR[7]
67
ADDR[8]
68
APS_INTB
83
O (O/D)
APS INTERRUPT:
Active-low output triggered by an APS
event. APS_INTB is an open-drain output which is in a high
impedance state when inactive.
When used, this pin needs an external pull-up.
BUSMODE0
87
I/O
BUS INTERFACE MODE:
BUSMODE1
30
BUSMODE1, BUSMODE0 = 00 -> Motorola MPC860 mode
BUSMODE1, BUSMODE0 = 01 -> Reserved
BUSMODE1, BUSMODE0 = 10 -> Reserved
BUSMODE1, BUSMODE0 = 11 -> Reserved
Both pins are latched at reset and are also used as test outputs in
test mode. In normal applications, tie these pins low.
CPU_CLK
60
I
CPU CLOCK:
Used in Motorola MPC860 mode.
CSB
84
I
CHIP SELECT:
Active-low chip select.
D[0]
69
I/O
I/O DATA BUS:
Allows transfer of data between host
D[1]
72
microprocessor and the HDMP-3001.
D[2]
73
Refer to microprocessor application notes on the usage of
D[3]
74
board level pull-ups.
D[4]
75
D[5]
76
D[6]
77
D[7]
78
Table 4. Microprocessor Interface Pins Description
(continues)
