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★ HARDWARE Manual ★ SEGA Saturn Overview Manual
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■3.7 SMPC

The SMPC resets the entire Saturn system when power is turned on or when the reset button is pressed. In addition, commands from the SH-2 turn on/off the Saturn's internal peripheral LSIs, set and acquire the calendar clock, and collect data from peripherals. Furthermore, the clock change command switches the horizontal resolution to 320 dots or 352 dots.

Figure 3.34 SMPC system configuration

(*Peripheral input/output terminals can also be controlled directly from the SH-2 side.)

●Function

Table 3.13 shows the main functions of SMPC.

Table 3.13 SMPC functions 
 RTC
 (Real Time Clock)
・Time setting and acquisition from SH-2
・ Battery backup function
・ Automatically update year, month, day, day of week, hour, minute, and second
 SM
 (System Management)
・Sound CPU ON/OFF
・ ON/OFF of master SH-2 and slave SH-2
・ Controlling system reset
・ Clock switching (PLL switching)
・ Power ON reset
・ Saturn when power is turned on and reset switch is pressed
 reset system
 PC
 (Peripheral Control)
・Peripheral data such as control pad, mouse, etc.
 Automatically collect data
・ Peripherals for Mega Drive and Genesis (3 buttons)
 6-button, 4-player adapter, and mouse).
 port
■PAD
Table 3.14 shows the digital PAD specifications for Saturn.
Table 3.14 Saturn standard PAD specifications 
 PAD type
 specification
 saturn standard pad
 button:
 Up, Down, Left, Right, A, B, C, X, Y, Z, L, R, Start

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★ HARDWARE Manual ★ SEGA Saturn Overview Manual
Copyright SEGA ENTERPRISES, LTD., 1997