Xerox WorkCentre Pro 412 Service Manual page 91

OSTRB 1 L
PLL_B 1 H
YP
RA[15:0 16 H
]
RAMO 1 L
E
RAMW I L
R
Leve
Name Pins
l
RD 1 L
RD [7:0] 8 H
RE [1:0] 2 L
RESET 1 L
TESTIN 1 H
TEST- 1 H
OUT
VDD 22 N/A
VDDBI 1 N/A
AS
WR 1 L
RAMW I L
R
RD 1 L
RD [7:0] 8 H
RE [1:0] 2 L
< Pin Classification and Loading >
• I: Input
• O: Output
• 3S: Tri-state output
• OD:Open drain output
• P:Power supply
Combinations indicate bidirectional pins.
An "H" in the Resistor column indicates the pad has an internal pull-up resistor.
A tilde (~) indicates no internal resistor.
WorkCentre Pro 412, FaxCentre F12 &
WorkCentre M15/M15i
~ O Output Buffer Strobe
~ I Phase Locked Loop
Bypass
~ O RAM Address
~ O RAM Output Enable
~ I RAM Write Enable
Resi
Type Abbreviation/Description
stor
~ I Command Port Read
H 1/3S RAM Data
~ O RAM Enable
H I Chip Reset
~ I Test Input
O Manufacturing Test Out-
put
~ P Power Supply Source
Input Reference Voltage
~ I Command Port Write
~ I RAM Write Enable
~ I Command Port Read
H 1/3S RAM Data
~ O RAM Enable
3/03
Circuit Description
50 4 4
~ ~ ~
50 4 4
50 4 4
50 4 4
Maximum Loading
Cap Current (mA)
.
Vol Voh
(pF)
~ ~ ~
50 4 4
50 4 4
~ ~ ~
~ ~ ~
~ ~ ~
~ ~ ~
~ ~ ~
50 4 4
~ ~ ~
50 4 4
50 4 4
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