Ricoh D131 Service Manual page 1104


DSP V34 modem (RL5T892): Includes the DTMF Receiver function

DCR for MH, MR, MMR, and JBIG compression and decompression
FROM

1Mbyte flash ROM for SG3 software storage and modem software storage
SDRAM

4Mbyte DRAM shared between ECM buffer, line buffer, and working memory
AFE (Analog Front End)

Analog processing
CODEC (COder-DECoder)

A/D & D/A conversions for modem
REG

Generates +3.3 V from the +5V from the FCU
D619 212 SM