TMPR4937 datasheet(50/552 Pages) TOSHIBA

50 / 552 page

Chapter 1 Overview and Features

1-4

(5) Serial I/O port (SIO)

The TX4937 has an on-chip 2-channel asynchronous serial I/O interface (full duplex UART)

•

Full duplex UART

× 2 channels

•

On-chip baud rate generator

•

FIFO

Transmission: on-chip 8-bit

× 8-stage FIFO

Reception: on-chip 13-bit

× 16-stage (data: 8 bits; status: 5 bits) FIFO

•

Supports DMA transfer

(6) Timer/Counter control (TMR)

The TX4937 has an on-chip 3-channel timer/counter

•

32-bit setup counter

× 3 channels

•

Supports 3 modes: Interval Timer mode, Pulse Generator mode, Watchdog Timer mode

•

Timer output pins: 2 pins

•

Count clock input pin: 1 pin

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Watchdog external reset pin: 1 pin

(7) Parallel I/O port (PIO)

The TX4937 has a 16-bit parallel I/O port (8 bits of which are shared with CB[7:0])

•

Can set I/O direction and port type (totem pole output/open drain output) during output for

each bit

(8) AC-link Controller (ACLC)

The TX4937 on-chip AC-link Controller can connect and manipulate audio and/or modem

CODECs described in “Audio CODEC ’97 Revision 2.1”.

•

Supports up to 2 CODECs

•

Supports 16-bit PCM stereo channel recording and playback

•

Supports 16-bit surround, center, LFE channel playback

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Supports variable rate audio recording and playback

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Supports Line 1 for modem CODEC and GPIO slot

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Supports AC-link low-power mode, Wake Up, and Warm Reset

Supports sample data input/output by DMA transfer

(9) Interrupt Controller (IRC)

The Interrupt Controller built into the TX4937 receives interrupt requests and external interrupts

from the TX4937 on-chip peripheral circuits and issues interrupt requests to the TX49/H3 core.

This controller has a 16-bit flag register that generates interrupt requests to an external device or

the TX49/H3 core.

•

Supports 19 types of internal interrupts from the on-chip peripheral circuits and 6 external

interrupt signal inputs

•

Sets 8 priority levels for each interrupt input

TMPR4937 Datasheet(PDF) 50 Page - Toshiba Semiconductor

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