UPI-C42UPI-L42
Table 3 Signature Mode Table
Address
Device No of
Type Bytes
Test CodeChecksum 0 0FH ROMOTP 25
16H 1EH
Intel Signature 10H 11H ROMOTP 2
User Signature 12H 13H OTP 2
Test Signature 14H 15H ROMOTP 2
Security Byte 1FH or 3FH ROMOTP 2
UPI-C42 Intel Signature 20H 21H ROMOTP 2
User Defined UPI-C42 OTP EPROM Space 22H 3EH ROMOTP 30
ACCESS CODE
The following table summarizes the access codes required to invoke the Sync Mode Signature Mode
and the Security Bit respectively Also the programming and verification modes are included for
comparison
Control Signals Data Bus
Access Code
Modes Port 2 Port 1
T0 RST SS EA PROG V
DD
V
CC
0123456701230 1234567
Programming 0 0 1 HV 1 V
DDH
V
CC
Address Addr a
0
a
1
XXXXXX
Mode
0 1 1 HV STB V
DDH
V
CC
Data In Addr
Verification 0 0 1 HV 1 V
CC
V
CC
Address Addr a
0
a
1
XXXXXX
Mode
111HV1V
CC
V
CC
Data Out Addr
Sync Mode STB 0 HV 0 X V
CC
V
CC
XXXXXXXXXXX XXXXXXXX
High
Signature Prog 0 0 1 HV 1 V
DDH
V
CC
Addr (see Sig Mode Table) 0 0 0 0 1 1 1 1 X X 1
Mode
0 1 1 HV STB V
DDH
V
CC
Data In 0 0 0
Verify 0 0 1 HV 1 V
CC
V
CC
Addr (see Sig Mode Table) 0 0 0
111HV1V
CC
V
CC
Data Out 0 0 0
Security Prog 0 0 1 HV 1 V
DDH
V
CC
Address 0 0 0
BitByte
0 1 1 HV STB V
DDH
V
CC
Data In 0 0 0
Verify 0 0 1 HV 1 V
CC
V
CC
Address 0 0 0
111HV1V
CC
V
CC
Data Out 0 0 0
NOTE
1 a
0
e
0or1a
1
e
0or1a
0
must
e
a
1
12