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Table 7 - Address Pointer High Register
BIT BIT NAME SYMBOL DESCRIPTION
7 Read Data RDDATA This bit tells the COM20020 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.
6 Auto Increment AUTOINC 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.
5-3 (reserved) These bits are undefined.
2-0 Address 10-8 A10-A8 These bits hold the upper three address bits which
provide addresses to RAM.
Table 8 - Address Pointer Low Register
BIT BIT NAME SYMBOL DESCRIPTION
7-0 Address 7-0 A7-A0 These bits hold the lower 8 address bits which provide
the addresses to RAM.