CS8403A-CS CIRRUS [Cirrus Logic], CS8403A-CS Datasheet - Page 17

• Manufacturer Part Number: CS8403A-CS
• Description: 96KHZ DIGITAL AUDIO TRANSMITTER
• Manufacturer: CIRRUS [Cirrus Logic]

PIN DESCRIPTIONS
Power Supply Connections
VD+ - Positive Digital Power, PIN 19.
GND - Ground, PIN 18.
Audio Input Interface
SCK - Serial Clock, PIN 6.
FSYNC - Frame Sync, PIN 7.
SDATA - Serial Data, PIN 8.
Parallel Interface
CS - Chip Select, PIN 14.
DS239PP1
Positive supply for the digital section. Nominally +5 volts.
Ground for the digital section.
Serial clock for SDATA pin which can be configured (via control register 3) as an input or
output, and can sample data on the rising or falling edge. As an output, SCK will contain 32
clocks for every audio sample. As an input, it does not need to be continuous and can be up to
15 MHz.
Delineates the serial data and may indicate the particular channel, left or right. Also, FSYNC
may be configured as an input or output. The format is based on bits in control register 3.
Audio data serial input pin.
This input is active low and allows access to the 32 bytes of internal memory. The address bus
and RD/WR must be valid while CS is low.
SERIAL DATA CLOCK
ADDRESS BUS BIT 4
ADDRESS BUS BIT 3
ADDRESS BUS BIT 2
ADDRESS BUS BIT 1
SERIAL INPUT DATA
MASTER CLOCK
DATA BUS BIT 4
DATA BUS BIT 5
DATA BUS BIT 6
DATA BUS BIT 7
FRAME SYNC
SDATA
FSYNC
MCK
SCK
D4
D5
D6
D7
A4
A3
A2
A1
1
2
3
4
5
6
7
8
9
10
11
12
CS8403A
24
23
22
21
20
19
18
17
16
15
14
13
D3
D2
D1
D0
TXP
VD+
GND
TXN
RD/WR
INT
CS
A0
DATA BUS BIT 3
DATA BUS BIT 2
DATA BUS BIT 1
DATA BUS BIT 0
TRANSMIT POSITIVE
POWER
GROUND
TRANSMIT NEGATIVE
READ/WRITE SELECT
INTERRUPT
CHIP SELECT
ADDRESS BUS BIT 0
CS8403A CS8404A
17