Page 18
Epson Research and Development
Vancouver Design Center
S1D13704
Hardware Functional Specification
X26A-A-001-04
Issue Date: 01/02/08
5.2 Pin Description
Key:
5.2.1 Host Interface
I
=
Input
O
=
Output
I/O
=
Bi-Directional (Input/Output)
P
=
Power pin
C
=
CMOS level input
CD
=
CMOS level input with pull down resistor (typical values of 100K
Ω/180ΚΩ
at 5V/3.3V respectively)
CS
=
CMOS level Schmitt input
COx
=
CMOS output driver, x denotes driver type (1=3/-1.5mA, 2=6/-3mA, 3=12/-6mA)
TSx
=
Tri-state CMOS output driver, x denotes driver type (1=3/-1.5mA, 2=6/-3mA, 3=12/-6mA)
TSxD
=
Tri-state CMOS output driver with pull down resistor (typical values of 100K
Ω/180ΚΩ
at 5V/3.3V
respectively), x denotes driver type (1=3/-1.5mA, 2=6/-3mA, 3=12/-6mA)
CNx
=
CMOS low-noise output driver, x denotes driver type (1=3/-1.5mA, 2=6/-3mA, 3=12/-6mA)
Pin Names
Type
Pin #
Cell
RESET#
State
Description
AB0
I
70
CS
Input
This pin has multiple functions.
• For SH-3/SH-4 mode, this pin inputs system address bit
0 (A0).
• For MC68K #1, this pin inputs the lower data strobe
(LDS#).
• For MC68K #2, this pin inputs system address bit 0 (A0).
• For Generic #1, this pin inputs system address bit 0
(A0).
• For Generic #2, this pin inputs system address bit 0
(A0).
See “Host Bus Interface Pin Mapping” for summary.
AB[15:1]
I
53, 54, 55,
56, 57, 58,
59, 62, 63,
64, 65, 66,
67, 68, 69
C
Input
These pins input the system address bits 15 through 1
(A[15:1]).
DB[15:0]
I/O
3, 4, 5, 6, 7,
8, 9, 11, 12,
13, 14, 15,
16, 17, 18,
19
C/TS2
High
Impedance
These pins have multiple functions.
• For SH-3/SH-4 mode, these pins are connected to
[D15:0].
• For MC68K #1, these pins are connected to D[15:0].
• For MC68K #2, these pins are connected to D[31:16] for
a 32-bit device (e.g. MC68030) or D[15:0] for a 16-bit
device (e.g. MC68340).
• For Generic #1, these pins are connected to D[15:0].
• For Generic #2, these pins are connected to D[15:0].
See “Host Bus Interface Pin Mapping” for summary.
*