MT7697 datasheet(48/81 Pages) ETC2

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MT7697

Internet-of-Things Wireless Connectivity

Page 48 of 81

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Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Mode

Description

Waveform

S1_Lasting_Time)

2.5.9

IrDA

IrDA TX module supports consumer IR protocols including NEC, RC-5, RC-6, and the software-based

pulse-width mode. IrDA RX module supports protocols including RC-5 and pulse-width detection

mode.

2.6

Radio MCU Subsystem

2.6.1

CPU

MT7697 features 32-bit CPU N9, with the following features:



5-stage pipeline with extensive clock-gating



Dynamic branch prediction with BTB



16/32-bit mixed instruction format



Multiply-accumulate and multiply-subtract instructions



Instructions optimized for audio applications



Instruction and data local memory



JTAG based debug interface



Programmable data endian control

2.6.2

RAM/ROM

The Radio MCU subsystem features ILM (Instruction Local Memory), DLM (Data Local Memory), and

the SYSRAM. The ROM code is in ILM.

2.6.3

Memory map

The table below describes how the peripherals are mapped to the memory space in Radio MCU

subsystem.

When the MCU performs a read transaction to an undefined address, the bus returns 0. When the

MCU performs a write transaction to an undefined address, the bus regards it as an invalid

transaction and does nothing.

Table 2-21. N9 Memory Map

Start address

End address

Function

Description

0x0000_0000

0x000C_FFFF

ILM ROM

Instruction local memory ROM

for N9

0x000D_0000

0x0011_FFFF

ILM RAM

Instruction local memory RAM

for N9

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