teardown: Verifone vx570 card terminal

The following is a disassembly of a working Verifone Vx570 I scored off ebay for $20. The switch that sits behind the spring-loaded LCD display had already been tripped before I received it, meaning that it had switched into recovery mode.

The device has a large number of components, with roughly 28 IC’s and a number of physical ports as well:

• USB
• RS232
• Ethernet
• Modem
• Pin Pad

The following IC’s can easily be identified:

• VeriFone 08233-01 Rev.A
• TDA8020HL Smart Card Interface (datasheet)
• ST LM358 Dual OpAmp (datasheet)
• ST L5973D power reg (datasheet)
• 93L56 EEPROM (datasheet)
• MA3243C RS232 driver (datasheet)
• TUSB2046B USB Hub (datasheet)
• ASIX AX88772 USB to Ethernet Controller (datasheet)
• Conexant CX20493 Modem controller
• CX86500 Controller-based Modem (databrief)
• LM393 Dual Comparators (datasheet)
• LB1936 Stepper motor driver (datasheet)
• VHC132 Quad NAND (datasheet)
• VHC08 Quad AND (datasheet)
• VHC14  Inverter (datasheet)
• MV339 Voltage comparators (datasheet)
• PG2SB V86
• Samsung S3C2410A RISC ARM SoC (datasheet)
• 07996-06 (real chip ID probably under label – todo)
• r1wv3216rbg-7sr 32mbit BGA SRAM (datasheet)
• MRD531B F2F Decoder for magnetic reader (datasheet)
• 8007B_C3 smartcard controller (datasheet)
• AEU N AJ (?)