SM5902AF Datasheet, PDF (16/40 Pages) Nippon Precision Circuits Inc – compression and non compression type shock-proof memory controller

Read command summary
Shock-proof memory status (1) 90
SM5902AF
Bit Name
S7 FLAG6
S6 MSOVF
S5 BOVF
S4
S3 DCOMP
S2 MSWIH
S1 MSRIH
S0
Function
Signal processor IC jitter margin exceeded
Write overflow (Read once only when RA exceeds WA)
Input buffer memory overflow
because sampling rate of input data is too fast
Data compare-connect sequence operating
Encode sequence stop due to internal factors
Decode sequence stop due to internal factors
90hex = 1001 0000
HIGH-level state
Exceeded
DRAM overflow
Input buffer memory overflow
Compare-connect sequence operating
Encoding stopped
Decoding stopped
Refer to "Status flag operation summary".
Shock-proof memory status (2) 91
Bit Name
S7 MSEMP
S6 OVFL
S5 ENCOD
S4 DECOD
S3 QRDY
S2
S1
S0
Function
Valid data empty state (Always HIGH when RA exceeds VWA)
Write overflow state (Always HIGH when WA exceeds RA)
Encode sequence operating state
Decode sequence operating state
Subcode Q data write-buffer write enable
91hex = 1001 0001
HIGH-level state
No valid data
Memory full
Encoding
Decoding
Write enabled
Refer to "Status flag operation summary".
NIPPON PRECISION CIRCUITS-16