User's Manual

MPI 6000 Multi-Protocol Reader System Guide
7-4
Table 7-2 shows the Set Frequency Response parameters.
The Source field identifies the source for the associated N Counter information (Table
7-3).
A Counter –
This field contains the data for the binary five-bit A Counter of the PLL.
The A and B counters combine to form the 18-bit N Counter. The valid
range of the A
Counter data field is 00H to 1FH.
B Counter LSBs – This field contains the LSB for the binary 13-bit B Counter of the
PLL. The A and B counters combine to form the 18-bit N Counter. The
valid range of
the data field is 0H to 3H. The B Counter value is 007XH, where X = B Counter
LSBs.
The PLL frequency spreadsheet contains the values used to set the A Counter and the
B Counter
. This command will be modified to allow the system to send frequency val-
ues instead of A and B counters.
Unused A Counter XXH
Unused B Counter LSBs 0XH
Carriage Return 0DH
Table 7-1 Set Frequency Command Parameters
Table 7-2 Set Frequency Response Parameters
Set Frequency Response Data
Data
Payload
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Set
Frequency Command 08H
Unused Source 0XH
Acknowledge 00H
Carriage Return 0DH
Table 7-3 Descriptions of Sources
Source Definition
0 Source 1
1 Source 2
PRELIMINARY