CXA1797Q
Description of Operation
1. Logic Usage
The CXA1797Q is controlled by 11-bit serial data.
(Note 2)
Name
SPEED
METAL
EQ
Function (DATA 1)
Function (DATA 0)
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
NORM
HIGH
METAL OFF
120µs
METAL ON
70µs
A/B
DECK A
DECK B
METER
PB/REC
LMUTE
RMUTE
BC/S
METER GAIN NORM
PB MODE
METER GAIN HIGH (+12dB)
REC MODE
LINE MUTE ON
REC MUTE ON
DOLBY NR B or C
DOLBY NR B
DOLBY NR OFF
LINE MUTE OFF
REC MUTE OFF
DOLBY NR S
(Note 1)
B/C
DOLBY NR C
NR ON/OFF
DOLBY NR ON
Note 1) S mode takes precedence over other noise reduction modes. (When turning noise reduction off,
select BC mode.)
Note 2) All data is initialized to "1" when a reset is executed.
2. Serial Data Format
An overview of the serial data format is shown below.
When using CLK and LATCH as normal high:
DATA is read at the
rising edge of CLK.
CLK
DATA
LATCH
XRST
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
LATCH low : hold
LATCH high : load
Reset operation when low
(when reset is required)
When using CLK and LATCH as normal low (Note 3)
:
DATA is read at the
rising edge of CLK.
CLK
DATA
LATCH
XRST
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
LATCH low : hold
LATCH high : load
Reset operation when low
(when reset is required)
Note 3) In this instance, have the LATCH signal rise while CLK is high.
—21—
SONY [ SONY CORPORATION ]
