9
Upper Address Memory
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
X X X X X X X X X X X X X X X X
Read
IP A22:7
Write
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Reset
When accessing an IP in memory space, the address bits A22 to A7 are required as well.
The Upper Address Register provides these bits to the IP bus. This register must be
programmed before accessing the data register.
Data Register
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
IP D15:0
Read
IP D15:0
Write
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Reset
The Flex/104A is only capable of 16-bit addresses to the IndustryPack bus. The 16 bits
of read/write data are provided in the Data Register. The act of reading or writing the
Data Register begins the IP access. For this reason, you must first program the IP
Access Register and the Upper Address Register, if a memory access, before accessing
the data register.
StockCheck.com
Downloaded from StockCheck.com
