Tally T6215, Maintenance Manual

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T6215 Maintenance Manual
1–2
Motor logic and drive
• 8 Hz bridge Motor drive chips (2 for ribbon, 2 for shuttle, 2 for paper,
and 2 for ribbon ink pump) – Allegro 3952
EEPROM
The EEPROM stores engine calibration and printer configuration settings.
Serial and Parallel Interfaces
Serial
• MC145407 (5V) chip is used for the RS-232 drivers and receivers
• Both DTR/Busy and XON/XOFF is supported
• Standard secondary RTS on pins 11 and 19. Primary RTS is capable of
being jumpered to pin 4
Parallel
• Altera EPM7064 and 74LS374/74LCX244 – supports IEEE-1284 compat-
ibility and nibble modes
Main Processor
Motorola Cold Fire 5307
• 56MHz clock
• 32-bit CPU bus
• Two direct Memory Access (DMA) channels – One for hammer loading,
and one for the IEEE-1284 parallel Interface
• Two serial channels – One for the control of CPU communication, and
one for the external serial interface
• Internal SDRAM controller
Altera EPM7064
• Logic for IEEE-1284 Parallel interface
• Logic for PSIO Interface
The following table shows host interface configuration options
Table 1–1. Host Interface Configurations
Personality Module Standard Ser/Par LANPlex FourPlex
Host I/Os IEEE 1284 IEEE 1284 IEEE 1284
RS-232-C RS-232-C RS-232-C
Ethernet Twinax
Coax
Optional Configurations IPDS IPDS