S5L9274 Datasheet, PDF (14/36 Pages) Samsung semiconductor – DECODER FOR CD-MP3/CD-ROM

S5L9274
DECODER FOR CD-MP3/CD-ROM
Registers to communicate with embedded DSP core
// Read only registers (8'h00  8'h0F reserved for dspUnit - Read)
H_OUT1_LOW 8'h01
Low byte of OUT1 register.
H_OUT1_HIGH 8'h02
High byte of OUT1 register.
H_OUT2_LOW 8'h03
Low byte of OUT2 register.
H_OUT2_HIGH 8'h04
High byte of OUT2 register.
H_OUT_XTRA 8'h05
Extra byte of OUT register.
H_EMPH
8'h06
Indicate Emphasis ON/OFF and Emphasis Type.
bit[7:2] : not used.
bit[1] : If "1", Emphasis ON. If "0", emphasis OFF.
bit[0] : Emphasis Type
// Write only registers (8'h80  8'h8F reserved for dspUnit - Write)
H_SSPINT 8'h80
Micom command register. Micom writes a command to this register.
H_IN_LOW 8'h81
Low byte of in register
H_IN_HIGH 8'h82
High byte of in register
H_IN_XTRA 8'h83
Extra byte of in register
Registers for configuration and status of DRAM
// Read only registers (8'h10  8'h1F reserved for memUnit - Read)
H_DUMP_CNT 8'h11
Total number of CD frames currently been dumped to DRAM since 0x91
was written to OPSR register. Once all frames as many as specified in
the H_FRAME_NO register are dumped into DRAM, OPSR value will be
changed to 90 automatically after completion of dump. At every time
after 0x91 was written to OPSR and 1 frame has been dumped, the
H_DUMP_CNT reset to "1".
H_IB_STATE 8'h12
Input Buffer Occupancy
bit0 : Empty
bit1 : Low
bit2 : High
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