Block diagram
W9864G6KH
Publication Release Date: Nov. 12, 2013
- 6 -
Revision A02
6. BLOCK DIAGRAM
CLK
CKE
A10
CLOCK
BUFFER
COMMAND
DECODER
ADDRESS
BUFFER
REFRESH
COUNTER
COLUMN
COUNTER
CONTROL
SIGNAL
GENERATOR
MODE
REGISTER
COLUMN DECODER
SENSE AMPLIFIER
CELL ARRAY
BANK #2
COLUMN DECODER
SENSE AMPLIFIER
CELL ARRAY
BANK #0
COLUMN DECODER
SENSE AMPLIFIER
CELL ARRAY
BANK #3
DATA CONTROL
CIRCUIT
DQ
BUFFER
COLUMN DECODER
SENSE AMPLIFIER
CELL ARRAY
BANK #1
NOTE:
The cell array configuration is 4096 * 256 * 16
A0
A9
BS0
BS1
CS
RAS
CAS
WE
A11
AK4458VN (DIGITAL : U1053)
Pin Function
No. Pin Name
I/O Function
PD State
1 MCLK
I External Master Clock Input Pin
Hi-Z
2
BICK
I Audio Serial Data Clock Pin in PCM mode
Hi-z
DCLK
I DSD Clock Pin in DSD mode
3
LRCK
I Input Channel Clock Pin in PCM mode
Hi-Z
DSDL1
I Audio Serial Data Input in DSD mode
4
SDTI1
I Audio Serial Data Input in PCM mode
Hi-Z
DSDR1
I Audio Serial Data Input in DSD mode
5
SDTI2
I Audio Serial Data Input in PCM mode
Hi-Z
DSDL2
I Audio Serial Data Input in DSD mode
6
SDTI3
I Audio Serial Data Input in PCM mode
100k Ω
Pull down
DSDR2
I Audio Serial Data Input in DSD mode
TDMO1
O Audio Serial Data Output in Daisy Chain mode
7
SDTI4
I Audio Serial Data Input in PCM mode
100k Ω
Pull down
DSDL3
I Audio Serial Data Input in DSD mode
TDMO2
O Audio Serial Data Output in Daisy Chain mode
8 DSDR3
I Audio Serial Data Input in DSD mode
Hi-Z
9 DSDL4
I Audio Serial Data Input in DSD mode
Hi-Z
10 DSDR4
I Audio Serial Data Input in DSD mode
Hi-Z
11
DZF
O Zero Input Detect in I2C Bus or 3-wire serial control mode
100k Ω
Pull down
SMUTE
I
Soft Mute Pin in Parallel control mode.
When this pin is changed to "H", soft mute cycle is initiated. When it is returning to "L", the
output mute is released.
12
CAD1
I Chip Address 0 Pin in I C Bus or 3-wire serial control mode
Hi-Z
DCHAIN
I Daisy Chain Mode select pin in Parallel control mode.
13
SDA
I/O Control Data Pin in I2C Bus serial control mode
Hi-Z
CDTI
I Control Data Input Pin in 3-wire serial control mode
TDM0
I TDM Mode select pin in Parallel control mode.
14
SCL
I Control Data Clock Pin in I2C Bus serial control mode
Hi-Z
CCLK
I Control Data Clock Pin in 3-wire serial control mode
TDM1
I TDM Mode select pin in Parallel control mode.
[AK4458]
014011794-E-00
2015/01
- 7 -
5. Pin Configurations and Functions
Ordering Guide
AK4458VN
40 +105 C (Exposed pad is connected to ground)
40 +85 C (Exposed pad is open)
48-pin QFN (0.5mm pitch)
AKD4458 Evaluation Board for AK4458
Pin Configurations
Note 1. The exposed pad at back face of the package must be open or connected to the ground of the board.
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
52