co561ad-d Connect One Ltd., co561ad-d Datasheet - Page 17

• Manufacturer Part Number: co561ad-d
• Description: The Co561ad-d Ichip Plus? Internet Controller? Is A Low-cost Intelligent Peripheral Device That Provides Internet Connectivity Solutions To A Myriad Of Embedded Devices.
• Manufacturer: Connect One Ltd.

5.2 iChip Plus Pin Functional Descriptions
5.2.1 Local BUS Signals
Signal
A [19:0]
AD[15:0]
ALE
iChip CO561AD-D Datasheet
Type
O/I
O
O
45, 49, 47,
51, 48, 53,
56, 54, 38,
37, 33, 46,
36, 35, 34,
25, 10, 11,
23, 13, 16,
50, 39, 8,
17, 22, 9,
24, 2, 3,
Pin No.
4, 5, 6,
19, 57
41
7
Address BUS: These pins supply addresses to the
system one-half of a CLKO period earlier than the
multiplexed address and data BUS AD15–AD0.
During a BUS hold or reset condition, the address
BUS is in a HIGH-impedance state.
These pins should be Connected to the address BUS
of the LAN controller.
Address and Data BUS: These time-multiplexed
pins supply addresses and data to the system. This
BUS supplies an address to the system during the
first period of a BUS cycle. They supply data to the
system during the remaining periods of that cycle.
During a BUS hold or reset condition, the address
BUS is in a HIGH-impedance state.
These pins should be Connected to data BUS of the
LAN controller.
Address Latch Enable: This pin indicates to the
system that an address appears on the address and
data BUS (AD15–AD0). The address is guaranteed
to be valid on the trailing edge of ALE.
This pin should be left Not Connected.
Description
Pin Descriptions
5-2