Table 5-1: Bus Interface - Epson S1D13503 Technical Manual

Page 22
5 PIN DESCRIPTION
5.1 Description
Key:
I =
O =
I/O =
P =
COx =
COxS =
TSx =
TSxD2 =
TTL =
TTLS =
Pin Name Type
DB0-
I/O
DB15
AB0 I
AB1-
I
AB19
BHE# I
IOCS# I
S1D13503
X18A-A-001-08
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Input
Output
Bidirectional (Input/Output)
Power pin
CMOS level output driver, x denotes driver type (see Table 6-4, "Output Specifications," on page 28)
CMOS level output driver with slew rate control for noise reduction, x denotes driver type (see Table 6-4,
"Output Specifications," on page 28)
Tri-state CMOS level output driver, x denotes driver type (see Table 6-4, "Output Specifications," on
page 28)
Tri-state CMOS level output driver with pull down resistor (typical values of 100KΩ/200ΚΩ at 5V/3.0V
respectively), x denotes driver type (see Table 6-4, "Output Specifications," on page 28)
TTL level input (V = 5.0V, see Table 6-3, "Input Specifications," on page 27)
DD
TTL level input with hysteresis
F00A F01A D00A
Pin # Pin # Pad #
118-
119,
94 -
91 - 98, 121-
100, 1,
1 - 8 125,
4 -11
128,
4-11
12 9 13
14-20,
22-30,
13 - 31 10 - 28
32-33,
36
91 88 113
84 81 103

Table 5-1: Bus Interface

Driver Description
These pins are connected to the system data bus. In 8-bit bus
TS2
mode, DB8-DB15 must be tied to V
In MC68000 MPU interface, this pin is connected to the Upper
TTLS Data Strobe (UDS#) pin of MC68000. In other MPU/Bus
interfaces, this pin is connected to the system address bus.
TTL These pins are connected to the system address bus.
In MC68000 MPU interface, this pin is connected to the Lower
Data Strobe (LDS#) pin of MC68000. In other MPU/Bus
TTLS
interfaces, this pin is the Byte High Enable input for use with
16-bit system. In 8-bit bus mode tie the BHE# input to V
TTLS Active low input to select one of sixteen internal registers.
Epson Research and Development
Vancouver Design Center
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Hardware Functional Specification
Issue Date: 01/01/29
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