com20020-5 Standard Microsystems Corp., com20020-5 Datasheet - Page 26

• Manufacturer Part Number: com20020-5
• Description: Com20020-5 Ulanc Universal Local Area Network Controller With 2k X 8 On-board Ram
• Manufacturer: Standard Microsystems Corp.

7-0
BIT
BIT
5-3
2-0
7
6
Read Data
Auto Increment
(reserved)
Address 10-8
Address 7-0
BIT NAME
BIT NAME
TABLE 6 - ADDRESS POINTER HIGH REGISTER
TABLE 7 - ADDRESS POINTER LOW REGISTER
RDDATA
AUTOINC
A10-A8
A7-A0
SYMBOL
SYMBOL
This bit tells the COM20020-5 whether the following
access will be a read or write. A logic "1" prepares the
device for a read, a logic "0" prepares it for a write.
This bit controls whether the address pointer will
increment automatically. A logic "1" on this bit allows
automatic increment of the pointer after each access,
while a logic "0" disables this function. Please refer to
the Sequential Access Memory section for further detail.
These bits are undefined.
These bits hold the upper three address bits which
provide addresses to RAM.
These bits hold the lower 8 address bits which provide
the addresses to RAM. Writing to the Address Pointer
Low sets the address, so the Address Pointer High
should be written before Address Pointer Low.
26
DESCRIPTION
DESCRIPTION