CMX980AL7 CML Microcircuits, CMX980AL7 Datasheet - Page 78

• Manufacturer Part Number: CMX980AL7
• Description: TETRA Baseband Processor
• Manufacturer: CML Microcircuits

TETRA Baseband Processor
Title:
Address:
Function:
Description:
7:0
7:0
Bit
1999 Consumer Microcircuits Limited
1
1
BISTPRSGLSB
BISTPRSGMSB
BISTPRSG
1
1
Address field
0
0
Built In Self Test Pseudo Random Sequence Generator
$0x60 to $0x61 (2 locations)
RW
This register block allows control of BIST operations. This 16-bit number controls the length of
the BIST data sequence. It is the initial value (or seed) written to the pseudo-random sequence
generation logic. The length of the BIST data sequence is a function of the feedback logic
equation and this initial value. The feedback function is fixed so run lengths are therefore
controlled by this value.
Which values to apply to give specific run lengths can be determined from a look-up table. This
table may be provided on request.
Name
0
0
Address $0x60
Address $0x61
0
0
[6:0]
0
0
Data
Data
Active State
0
1
Address and Data format for BISTPRSG access
D15 D14 D13 D12 D11 D10 D9 D8
RW
RW
Least significant 8 bits of the BISTPRSG register. This
register must be read before its associated MSB register.
Most significant 8 bits of the BISTPRSG register. This
register must be read after its associated LSB register.
78
Data field [15:0]
Function
D7 D6 D5 D4 D3 D2
CMX980A
D/980A/3
D1 D0