BU94603KV Functional Specifications
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Target Spec 0.12
Table V.13.3 U Bit Format
L0
R0
L1
R1
L2
R2
L3
R3
L4
R4
L5
R5
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
2
1
0
0
0
0
0
0
0
0
0
0
0
3
1
0
0
0
0
0
0
0
0
0
0
0
:
:
:
:
:
:
:
:
:
:
:
:
:
97
1
0
0
0
0
0
0
0
0
0
0
0
P bit is set to 1 if the number of
“1s” of source codes 4-30 is odd, and set to 0 if the number is even.
Therefore, the number of source codes which turn to 1 for one data must be an odd value, SPDIF ends
with L output and preamble output always starts in the same direction.
V.14 USB I/F
USB I/O I/F
Signal name I/O
Function
Remarks
USB_DP
I/O USB D+I/O terminal
-
USB_DM
I/O USB D-I/O terminal
-
REXTI
O
USB bias resistance connection
terminal
Connect resistance of 12k
Ω
1% to GND.
Differential signals of USB_DP and USB_DM enable communications with USB devices.
REXTI terminals become bias resistance connection terminals of the USB-PHY block.
V.15 SD I/F
SPI interface for SD memory card I/F
Signal name I/O
Function
Remarks
SD_CS
O SPI chip select
-
SD_CLK
O SPI clock
-
SD_DI
O SPI data input
-
SD_DO
I SPI data output
-
SD_CON
I
SD card connect detection
terminal
H: Not detecting SD card connection.
L: Detecting SD card connection.
These I/F enable communication with SD memory cards through SD memory card slots.
Since SD memory card slot requires detecting insertion of SD memory card, use of slot equipped with SD
memory card detecting terminal and connection to SD_CON terminal are required.
SD_CON terminal is pulled up within the device and detects SD memory card connection by L input.
V.16 MCHNG
Playing sound tune number detection output
Signal name I/O
Function
Remarks
MCHNG
O
Music tune number change
detection output signal
H: Playing, L: Tune completed/stopped
This signal outputs change of file to be played during playing MP3 file in the memory device.
MCHNG correctly outputs "H" during MP3 decode sequence, outputs "L" during "STOP" status.
V.17 BUSY
BUSY state detection output
Signal name I/O
Function
Remarks
BUSY
O
BUSY state detection output
signal
H: Busy, L: Not Busy
This signal outputs to indicate that this LSI is in BUSY.
BUSY signal analyzes commands from the master and outputs H until the operation is executed.
This LSI ignores command input during BUSY. However, only the ABORT and STOP commands can be
accepted even during BUSY, which can be executed. *See Chapter V.11.
