ACE9050 datasheet(13/52 Pages) MITEL

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ACE9050

Name

DDR1

DDR2

PORT1

PORT2

TCSR

FRC_HIGH

FRC_LOW

OCR_HIGH

OCR_LOW

ICR_HIGH

ICR_LOW

RMCR

TRCSR

RDR

TDR

RAMCR

R/W

Address

Description

Data Dir Register P1

Data Dir Register P2

Data Port 1

Data Port 2

Timer Control/Status

Free Run Counter MSB

Free Run Counter LSB

O/P Compare Reg MSB

O/P Compare Reg LSB

I/P Capture Reg MSB

I/P Capture Reg LSB

Rate & Mode Control

Tx/Rx Control and Status

Rx Data

Tx Data

Not Used

D7-0 reset condition

00000000

EEEEEEEE

010XXXXX

00000000

11111111

00000000

XXXX

0000

00100000

00000000

Notes

3, 4

4, 5

NOTES:

1. Both ports set to Input (0 = I/P, 1 = O/P)

2. E = external input

3. 6303 internally set to Multiplexed mode

4. X = Unused or undetermined

5. Set to 00001100 in SERV mode

6. Set to 00111010 in SERV mode

7. This register Read only in the ACE9050

Table 9 6303 ports

MODES OF OPERATION

The ACE9050 has three independent modes of operation:

Normal, Emulation, Service.

Mode

Emulation

Service

Normal

EMUL

SERV

Enabled

High

Default mode

Table 10 Modes of operation

1, NORMAL MODE

This is intended to be the mode of operation when the

ACE9050 is fully commissioned in the application. The internal

6303 Microprocessor is used and the Boot block ensures the

program counter goes to the beginning of the ROM code area

after initialisation. In Normal mode various blocks can be

powered down to save current, and the processor can be

programmed to run at 1·008MHz or 2·016MHz.

2. EMULATION MODE

This mode is intended for system and software development

work. In Emulation mode the Internal 6303 processor is made

redundant and its function is replaced in the system by an

external 6303 processor. This is to facilitate using a generic

6303 In-Circuit Emulator (ICE) for software development.

Table 11 shows the functionality of external pins that change

in this mode. This is to enable all of the internal functions of

the ACE9050 to operate as they would in Normal mode. In

Emulation mode the external processor or ICE must be set up

to operate in Multiplexed mode. This mode is only intended for

use at room temperature.

D[7:0]

A[13:8]

A[15:14]

ECLK

R/W

IRQN

ICN

Function

Data

Address

Not used

6303 Clk

Not used

Type

I/O

Data and A[7:0] I/P

Address I/P A[13:8]

Address I/P A[15:14]

ACE9050 Clock I/P

Read/Write strobe

Address Latch strobe

6303 Interrupt

6303 Timer P2 [0]

Type

I/O

Normal mode

Emulation mode

Function

Table 11 Normal and Emulation mode functions

ACE9050 6303 REGISTERS

3. SERVICE MODE

This mode is intended for system development and phone

service, where reprogramming of a FLASH ROM device is

required. The two areas that are affected by Service mode are:

1. The Watchdog and Autonomous Time Out (ATO) resets are

inhibited. This is intended for software development work.

The POFFN pin (85) is initially programmed to be a 1 by the

ROM code in this mode.

2. The internal ROM code facilitates loading of a program into

the RAM area from the SCI. This program would normally be

a FLASH loading program. The SCI may then be used to load

new object code into the FLASH memory of a system.

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