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AD6636
<12>: Port B, AGC 4 Enable Bit. Similar to Bit <13> for AGC 4.
Rev. 0 | Page 68 of 72
<11>: Port B, AGC 3 Enable Bit. Similar to Bit <13> for AGC 3.
<10>: Port B, AGC 2 Enable Bit. Similar to Bit <13> for AGC 2.
<9>: Port B, AGC 1 Enable Bit. Similar to Bit <13> for r AGC 1.
<8>: Port B, AGC 0 Enable Bit. Similar to Bit <13> for AGC 0.
<7>: Port A Append RSSI Bit. When this bit is set, an RSSI word
is appended to every I/Q output sample, irrespective of whether
or not the RSSI word is updated in the AGC. When this bit is
cleared, an RSSI word is appended to an I/Q output sample only
when the RSSI word is updated. The RSSI word is not output for
subsequent I/Q samples until the next time RSSI is updated
again in the AGC.
<6>: Port A, Data Format Bit. When this bit is set, the port is
configured for 8-bit parallel I/Q mode. When this bit is cleared,
the port is configured for 16-bit interleaved I/Q mode. See the
Parallel Port Output section.
<5>: Port A, AGC 5 Enable Bit. When this bit is set, AGC 5 data
(I/Q data) is output on parallel output Port A (data bus). When
this bit is cleared, AGC 5 data does not appear on output Port C.
<4>: Port A, AGC 4 Enable Bit. Similar to Bit <5> for AGC 4.
<3>: Port A, AGC 3 Enable Bit. Similar to Bit <5> for AGC 3.
<2>: Port A, AGC 2 Enable Bit. Similar to Bit <5> for AGC 2.
<1>: Port A, AGC 1 Enable Bit. Similar to Bit <5> for AGC 1.
<0>: Port A, AGC 0 Enable Bit. Similar to Bit <5> for AGC 0.
Output Port Control <9:0>
<9:8>: PCLK Divisor Bits. When a parallel port is in master
mode, the PCLK is derived from the PLL_CLK. These bits
define the value of the divisor used to divide the PLL_CLK to
obtain the PCLK. These bits are don’t care in slave mode.
Table 43. PCLK Divisor Bits
PCLK Divisor <7:6>
00
01
10
11
Divisor Value
1
2
4
8
<7>: PCLK Master Mode Bit. When the PCLK master mode bit
is set, the PCLK pin is configured as an output and the PCLK is
driven by the PLL_CLK. Data is transferred out of the AD6636
synchronous to this output clock. When this bit is cleared, the
PCLK pin is configured as an input. The user is required to
provide a PCLK, and data is transferred out of the AD6636
synchronous to this input clock. On power-up, this bit is cleared
to avoid contention on the PCLK pin.
<6:4>: Complex Control Bits. These bits are described in
Table 44.
Table 44. Complex Control Bits
Complex Control <6:4>
000
No complex filters
Comment
Stream control register controls
AGC usage.
Ch 0 and Ch 1 form a complex
filter.
Ch 0 and Ch 1 form a complex
filter; Ch 2 and Ch 3 form a
complex filter.
Ch 0 and Ch 1 form a complex
filter; Ch 2 and Ch 3 form a
complex filter; Ch 4 and Ch 5
form a complex filter.
Ch 0 and Ch 1 form a biphase
filter.
Ch 0 and Ch 1 form a biphase
filter; Ch 2 and Ch 3 to form a
biphase filter.
Ch 0 and Ch 1 to form a biphase
filter; Ch 2 and Ch 3 to form a
biphase filter; Ch 4 and Ch 5 to
form a biphase filter.
001
Str0/1 combined
010
Str0/1 combined,
Str2/3 combined
011
Str0/1 combined,
Str2/3 combined,
Str 4/5 combined
101
Str0/1 combined
110
Str0/1 combined,
Str2/3 combined
111
Str0/1 combined,
Str2/3 combined,
Str 4/5 combined
<3:0>: Stream Control Bits. These bits are described in Table 45.
Table 45. Stream Control Bits
Stream
Control Bits
0000
Output Streams (str0, str1,
str2, str3, str4, str5)
Ch 0/1 combined; Ch 2, Ch 3,
Ch 4, Ch 5 independent
Ch 0/1/2 combined; Ch 3, Ch 4,
Ch 5 independent
Ch 0/1/2/3 combined; Ch 4, Ch
5 independent
Ch 0/1/2/3/4 combined; Ch 5
independent
Ch 0/1/2/3/4/5 combined
Ch 0/1/2 combined, Ch 3/4/5
combined
Ch 0/1 combined, Ch 2/3
combined, Ch 4/5 combined
Ch 0/1 combined, Ch 2/3
combined, Ch 4, Ch 5
independent
Ch 0/1/2 combined, Ch 3/4
combined, 5 independent
Ch 0/1/2/3 combined, Ch 4/5
combined.
Independent channels
Number of
Streams
5
0001
4
0010
3
0011
2
0100
0101
1
2
0110
3
0111
3
1000
3
1001
2
Default
6