sc9822p Silan, sc9822p Datasheet - Page 12

• Manufacturer Part Number: sc9822p
• Description: Mp3 Decoder With Esp Function And Cd Interface
• Manufacturer: Silan

(Continued)
Note: 1. when it is in free mode, do not displays the bit rate of current music in FrameInform register. At this time,
2. CD/MP3 Exchange with Host
state register provide some parameters:
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
The general purpose register provides parameter for main control command, and output register together with
CdRomType
Read external RAM registers
MemAddrHigh[7:0]
MemAddrMid[7:0]
MemAddrLow[7:0]
MemCmd[7:0]
1) StartConfigure
than this threshold, it will startup the next download operation; through configuring this value, the Mp3
shockproof time and CD pick up head jump frequency can remain balance; the value has an effective range
related with SDRAM configuration; If the input value exceeds the enable range, the default value will replace
the input value; Before send StartConfigure, the main controller will configure the HramType BitStreamType
and CdRomType.
2) SetUpCDFS
number of folders required (the maximum value is 0xFF). During file building, if operation occurs error, the
Host
OutReg1High&OutReg1Low indicate music file number; if the file number is 0, it means the file system
cannot be finished.
2. ForwardSkipFrame is when occurs error, if CD-DSP can not ensure the position of M.S.F needed by
3. The interface data of DAC and word clock are changing at the falling edge of the bit clock.
InpRegHigh&InpRegLow is a 16 bits unsigned number, if the blank data CdItf input to the buffer is larger
InpRegHigh, InpRegLow, InpReg2High are file start MSF physics address respectively; InpReg2Low is the
SC9822P, Host denotes SC9822P to skip the number of Second and Frame. Hereinto, the number of
second is stored in InpRegHigh(8’ h71), and the number of Frame is stored in InpRegLow(8’ h72).
the display time may be wrong.
Symbol
can
repeat
sending
Address Read/write Initialization
0x7A
0x7B
0x7C
0x7D
0x77
SetUpCDFS
W
W
W
W
W
command;
0x00
0x00
0x00
0x00
0x01
when
Bit[0]:
High 8 bits of start address when
external RAM outburst method to read
Middle 8 bits of start address when
external RAM outburst method to read
Low 8 bits of start address when
external RAM outburst method to read
External RAM read-write command
register
Bit[7:0]:
1:CD-ROM XA format disk
0:Common CD-ROM format disk
0x00: External RAM read command
0x80: External RAM write command
file
system
Description
REV:1.0
is
SC9822P
finished,
Page 12 of 30
2006.07.21
the