Microchip Technology PRO MATE II, Manual

Page: 28 / 48

PRO MATE
®
II Device Support
DS30243H-page 24

1999 Microchip Technology Inc.
3.6 HCS200 Options
The programming dialog for HCS200 devices is shown in Figure 3.6.
Selectable options in this dialog are described in Table 3.1. Options
automatically set are described in Table 3.2.
Figure 3.6: Program Security Device Dialog – HCS200
Table 3.1: Selectable Options – HCS200
Option Description
User Serial
Number The encoder’s 28-bit (7-hex digits) serial number should
be entered here. If the Auto Increment check box is
selected, the serial number and/or user seed will be
automatically incremented when an encoder is
successfully programmed.
Baud Rate Select 400 uS All: Basic Pulse Width (BPW) of 400 µs with all
the code words transmitted.
200 uS 1/2: BPW of 200 µs and one in two code words
transmitted.
Low Voltage Trip Low: V
LOW
bit in transmission set at V
DD
= 4V.
High: V
LOW
bit in transmission set at V
DD
= 8V.
Table 3.2: Options Automatically Set – HCS200
Option Set To
SEED The 32-bit SEED is a randomly generated number.
EN_KEY The 16-bit envelope key is set to 0000 and envelope
encryption is disabled in the configuration word.
Discrimination Bits The discrimination bits in the configuration word are set
to mirror the 12 least significant bits of the serial
number.
EENC Envelope Encryption Select bit in the configuration word
is automatically cleared as none of the decoders
currently support envelope encryption.