EM78611 Datasheet, PDF (8/26 Pages) ELAN Microelectronics Corp – Universal Serial Bus Microcontroller Series

EM78611
Universal Serial Bus Microcontroller Series
Preliminary
16x8 Common
Register
Fig 7.1 The Organization of EM78611 Data RAM
7.2.1.1 Operation Registers
The following sections will introduce each of the Operation Registers of the Special Purpose
Registers. The Operation Registers are arranged according to the order of registers’ address.
Note that some registers are read only, while others are both readable and writable.
R0 (Indirect Addressing Register) Default Value: (0B_0000_0000)
R0 is not a physically implemented register. Its major function is to be an indirect addressing
pointer. Any instruction using R0 as a pointer actually accesses the data pointed by the RAM
Select Register (R4).
This spec. may change without further notice.
8
06/10/2003 (V1.0)