SH7721 datasheet(798/1524 Pages) RENESAS

Part #	SH7721

Description	Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

PDF	1524 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

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Section 22

Analog Front End Interface (AFEIF)

Rev. 3.00 Jan. 18, 2008 Page 736 of 1458

REJ09B0033-0300

22.2

Input/Output Pins

Table 22.1 shows the pins for AFE interface.

Table 22.1

Pin Configuration

Pin Name

I/O

Function

AFE_RDET

Input

Ringing signal input

AFE_RLYCNT

Output

On-hook control signal

AFE_SCLK

Input

Shift clock

AFE_FS

Input

Frame synchronization signal

AFE_RXIN

Input

Serial receive data

AFE_HC1

Output

AFE hardware control signal

AFE_TXOUT

Output

Serial transmit data

22.3

Registers for AFEIF are shown below. Byte access registers to these is inhibited.

• AFEIF control register 1 (ACTR1)

• AFEIF control register 2 (ACTR2)

• AFEIF status register 1 (ASTR1)

• AFEIF status register 2 (ASTR2)

• Make ratio count register (MRCR)

• Minimum pose count register (MPCR)

• Dial number queue (DPNQ)

• Ringing pulse counter (RCNT)

• AFE control data register (ACDR)

• AFE status data register (ASDR)

• Transmit data FIFO port (TDFP)

• Receive data FIFO port (RDFP)

SH7721 Datasheet(PDF) 798 Page - Renesas Technology Corp

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