SPC8106 S-MOS Systems, SPC8106 Datasheet - Page 64

• Manufacturer Part Number: SPC8106
• Description: LCD/CRT VGA CONTROLLER
• Manufacturer: S-MOS Systems

5.1
Mixed Voltage Configurations
5.2
These inputs have internal pullup resistors. Based on the value of the internal pull-ups, the exter-
nal pull-down resistors if necessary, should be approximately 15K ohm. This value will provide the
correct voltage levels on power-up without loading the DRAM Data lines (V
Hardware Functional Specification
Pin Name
MD[3:0]
MD[4]
MD[5]
MD[6]
MD[7]
MD[8]
MD[12:9]
MD[13]
MD[14]
MD[15]
SP1-22
Table 0-8 Mixed Voltage Configuration
Configuration Options
Power On / Reset Options
Core VDD
S-MOS Systems, Inc. • Tel: [phone] • Fax: [phone] • http://www.smos.com
3.3 V
5.0 V
value on this pin at falling edge of RESET is used to configure:
values latched into read-only AUX[0C] bits 3:0 for software use
16-bit ISA interface (1) / 8-bit ISA interface (0)
A[19:2] latched internally by ALE (1) / standard ISA bus ALE - A[16:0] not latched (0)
2 CAS, 1 WE type DRAM (1) / 1 CAS, 2 WE type DRAM (0)
support 16-bit panel with external logic (1) / support 16-bit panel directly (0)
5 V core operating voltage (1) / 3.3 V core operating voltage (0)
values latched into read-only bits 7:4 of AUX[0C] for software use
pins 38, 39 used for ext. RC for 32 kHz PDCLK (1) / pins 38, 39 used for OL[1:0] (0)
Internal PDCLK doubling disable (1) / enable (0)
3C3h used as video enable port (1) / 46E8h and 102h used as video enable port (0)
3.3 V
OK
NO
I/O VDD
Table 0-9 Summary of Power On / Reset Options
5.0 V
OK
OK
X12-SP-001-07
DD
(1/0)
= 5.0V).
411-1.0
SPC8106