Xerox Phaser 3200MFP Service Manual page 173

• Receive dynamic range:
- 0 dBmto-43 dBmfor V.17,V.29,V.27 ter and V.21
- -9 dBm to -43 dBm for V.34 halfduplex
2) The Gain of the Line signal can be adjusted by setting the register value of the FAX modem
chip, Tx and Rx path and is almost directly connected to the impedance matching transformer of
the LIU.
- Adjust Tx Level within Setting Level+0,-2dB range.
- Adjust Rx Level that has the same level as the TIMS out level if possible, and must not
exceed the TIMS out level.
3) Speaker Driving Unit
Analog Switch(MC14053BD) makes a path for FAX Tone, Ring, Key click sound and Analog
MUX (MC14051) makes a different signal level so that the Speaker driver chip(MC34119) can
drive the Speaker with different sound volume.
Phaser 3200 Fax Modem
Implemented by based on Conexant DAA (Data Access Arrangement) Solution, and is roughly
composed of two kinds Chip Solution
- CX86710 (SFX336): Existing Modem Chip which adds SSD (System Side Device) for inter-
facing between LSD and DIB of FM336Plus Core
- CX20493 (LSD): LIU (Line Interface Unit) Chip which is controlled by SSD and satisfies
each PSTN Requirements by modulating internal Configuration with connecting Tel Line.
- Modem (SFX336) specification.
• 2-wire half-duplex fax modem modes with send and receive data rates up to 33,600 bps
• V.17, V.34, V.29, V.27 ter, and V.21 Channel 2
• Short train option in V.17 and V.27 ter
• PSTN session starting
• V.8 and V.8bis signaling
• HDLC support at all speeds
• Flag generation, 0-bit stuffing, ITU CRC-16 or CRC-32 calculation and generation
• Flag detection, 0-bit deletion, ITU CRC-16 or CRC-32 check sum error detection
• FSK flag pattern detection during high-speed receiving
• Tone modes and features
• Programmable single or dual tone generation
• DTMF receiver
• Tone detection with three programmable tone detectors
• Receive dynamic range:
• 0 dBm to -43 dBm for V.17, V.29, V.27 ter and V.21 Channel 2
• 9dBm to -43 dBm for V.34 half-duplex
• Digital speaker output to monitor received signal
• Two16-byte FIFO data buffers for burst data transfer with extension up to 255 bytes
• V.21 Channel 1Flag detect
• V.21 Channel 1Flag detect
• +3.3V only operation
• Typical power consumption
Phaser 3200MFP / Workcentre PE220
General Procedures and Information
04/07 6-17