WM8195
Production Data
OUTPUT FORMATS
The digital data output from the ADC is available to the user in either 14-bit parallel or 8/7/4-bit wide
multiplexed formats by setting control bits MUXOP[1:0]. Latency of valid output data with respect to
VSMP is programmable by writing to control bits DEL[1:0]. The latency for each mode is shown in the
Operating Mode Timing Diagrams section.
Figure 13 shows the output data formats for Modes 1 – 2 and 4 – 6. Figure 14 shows the output data
formats for Mode 3. Table 1 summarises the output data obtained for each format.
MCLK
MCLK
14-BIT PARALLEL
OUTPUT
14-BIT PARALLEL
OUTPUT
A
A
8+6 AND 7+7-BIT
OUTPUT
8+6 AND 7+7-BIT
OUTPUT
A
B
A
B
4+4+4+2-BIT
OUTPUT
4+4+4+2-BIT
OUTPUT
A
B
C
D
A B A B C D
Figure 13 Output Data Formats
Figure 14 Output Data Formats
(Mode 3)
(Modes 1 − 2, 4 − 6)
OUTPUT
FORMAT
MUXOP[1:0]
OUTPUT
PINS
OUTPUT
14-bit parallel
00
01
10
OP[13:0]
A = d13, d12, d11, d10, d9, d8, d7, d6, d5, d4, d3,
d2, d1, d0
8+6-bit
multiplexed
OP[13:6]
OP[13:6]
A = d13, d12, d11, d10, d9, d8, d7, d6
B = d5, d4, d3, d2, d1, d0, CC, OVRNG
7+7-bit
A = d13, d12, d11, d10, d9, d8, d7, CC
B = d6, d5, d4, d3, d2, d1, d0, OVRNG
4+4+4+2-bit
(nibble)
11
OP[13:10]
A = d13, d12, d11, d10
B = d9, d8, d7, d6
C = d5, d4, d3, d2
D = d1, d0, CC, OVRNG
Table 1 Details of Output Data Shown in Figure 13 and Figure 14.
FLAGS
The following flags are output during multiplexed modes:
CC can be used in colour modes 1 and 5 to identify the green channel output, from which the blue
and red data can be identified.
INPUT
RINP
GINP
BINP
CC
0
1
0
Table 2 Input Sampled Flags CC[1:0]
OVRNG indicates that the current output data was produced by an input signal that exceeded the
input range limit of the device. 1 = out of range, 0 = within range.
PD Rev 4.1 July 2005
18
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
