Evaluation Kit User Manual for PIC Board

EV6000

© 1996 Consumer Microcircuits Limited

13

UM6000/3

txalt

Enter a test mode where a continuous "10101010" pattern will be transmitted at 1200

baud by the FX604. Press <Esc> to terminate this pattern.

(c)

Functions:

(Press <Esc> to exit these functions)

rxfsk

Enter a mode where FSK data received by the FX602/FX604 is interpreted as ASCII

characters and displayed within the terminal emulator window. If the FX604 Tx back

channel is enabled, then entering a 1 or 0 will change the state of the transmit data

output. The FX602/FX604 is operated with data retiming selected.

txtxt

Enter a mode where text entered by the user or downloaded as a text transfer is

transmitted by the FX604. The FX604 is operated with data retiming selected.

txext

Enter a mode where raw data can be applied by the user to connector J2 pin 2 on the

EV6000 board for transmission at 1200 baud by an FX604 on the attached

EV6020/EV6040 board. A clock output is provided on J2 pin 1 of the EV6000 board,

the positive-going edge of which may be used to latch data on to J2 pin 2.

rxext

Enter a mode where raw data which has been received by an FX602 or FX604 at 1200

baud on the attached EV6020/EV6040 board can be read by the user on connector J2

pin 2 of the EV6000 board. A clock output is provided on J2 pin 1 of the EV6000

board, the positive-going edge of which may be used to latch data from J2 pin 2.

Notes:

Some terminal emulators have been found not to support full hardware flow control when transferring

text files. This could result in data loss when using the txtxt command. If this problem is

experienced, users should try using a lower data rate or a different terminal emulator.

The PIC I/O line (J2 pin 1) which is used for the rxext and txext commands is an open-collector

output with only a weak, 1M

Ω, pull-up resistor fitted to the EV6000 board.

When using either of the f! or f@ utilities, the register address equates to the following I/O ports:

05

PORT A

06

PORT B

07

PORT C

08

PORT D

09

PORT E

The individual lines of each port equate to EV6020 (and EV6040) connections as follows:

_dtmf

PORT A

bit 0

_acload

PORT A

bit 1

_wp

PORT A

bit 2

_txline

PORT A

bit 3

_d3

PORT B

bit 0

_d2

PORT B

bit 1

_d1

PORT B

bit 2

_d0

PORT B

bit 3

_zp

PORT B

bit 4

( _m0

for EV6040)

_mode

PORT B

bit 5

( _m1

for EV6040)

_irqn

PORT B

bit 6

_det

PORT B

bit 7

_clk

PORT C

bit 0