HT82K75REW datasheet(51/103 Pages) HOLTEK

51 / 103 page

HT82M75REW/HT82K75REW

Rev. 1.00

June 11, 2010

RF Transceiver Memory Block

The Memory Block of the RF Transceiver is imple-

mented by the SRAM. As the following Memory Block

diagram shown, the RF Transceiver Memory is com-

posed of registers and FIFOs, which can be accessed

by the SPI interface. They are categorized into two kinds

of address spaces. One is the short address space; the

other is the long address space.

Registers

Registers provide control bits and status flags for the RF

Transceiver operations, including transmission, recep-

tion, interrupt control, MAC/baseband/RF parameter

settings, etc. The registers are divided into two types ac-

cording to addressing mode as listed below.

· Short address register (6-bit short addressing mode

· Long address register (10-bit long addressing mode

Short address registers are accessed by short address-

ing mode with valid addresses ranging from 0x00H to

0x3FH. Long address registers are accessed by long

addressing mode with valid addresses ranging from

0x200H to 0x27FH. Short registers are accessed faster

than long registers. Please refer to the following SPI In-

terface section for detailed addressing rules via SPI in-

terface.

Memory Space Diagram

Memory Block Diagram

HT82K75REW Datasheet(PDF) 51 Page - Holtek Semiconductor Inc