TMS320C17 Features

The TMS320C17 is object-code compatible with the TMS320C10.

The 'C17 provides 256 16-bit words of internal data RAM and either 4K 16-bit words of internal or 4K 16-bit words of external program ROM. It is also available in a one-time programmable (OTP) version. The TMS320LC17 offers a 3.3-V (low-voltage) alternative to the standard 5-V device. The 'C17 integrates peripherals for a single-chip telecommunications system solution.

The TMS320C17 features:

• 160- and 200-ns instruction cycle times
• Two serial ports
• Programmable timer
• m-law/A-law companding hardware
• Coprocessor port interface
• Microcomputer mode only
• 40-pin DIP and 44-pin PLCC packages
• One-time programmable (TMS320P17) version

TMS320C17 Peripherals

The TMS320C17 peripherals:

• Are designed to meet the requirements of telecom applications
• Are mapped into I/O memory space
• Are accessed through in/out instructions

Coprocessor Interface: The coprocessor interface provides a direct connection to most microcontrollers. This is an asynchronous connection that can be configured for 8- or 16-bit transfers. Optionally, the coprocessor port can be used as a 16-bit I/O port.

Companding Hardware: The on-chip companding hardware enables the TMS320C17 to compress and expand data in either m-law format with either sign magnitude or 2s-complement numbers. The companding hardware converts between 8-bit log-PCM samples and linear PCM. This saves both time and board space for systems interfacing to standard CODECs such as the TCM29C18 and TCM29C19.

Serial Ports: The TMS320C17 has two serial ports, each with independent transmit and receive capability. These serial ports easily interface to common CODECs and operate at up to 2.5 Mbps.