90μPD1706210.2 FUNCTIONS OF DATA BUFFERThe data buffer provides the following two functions:(1) Read constant data in program memory (to reference tables)(2) Transfer data to and from peripheral hardwareFig. 10-3 shows the relationship between the data buffer, peripheral hardware, and memory.Table referencing is described in Section 10.3, and the peripheral hardware is described in Sections 10.4to 10.6.Fig. 10-3 Relationship Between Data Buffer, Peripheral Hardware, and Memory01H02H03H04H05H-08H40H41HPeripheral addressData bufferInternalTable referencingPeripheral hardwareImage display controller (IDC)A/D converterSerial interfaceHorizontal synchronizing signalcounter6-bit D/A converterAddress register (AR)PLL frequency synthesizerProgram memory(ROM)Constant data
