Epson S1C33210 User Manual

Page 20

1 OUTLINE

A-6

EPSON

S1C33210 PRODUCT PART

Pin name

Pin No.

I/O

Pull-up

Function

QFP15-128

#CE4

#CE11

#CE11&12

–

#CE4:

Area 4 chip enable when CEFUNC[1:0](D[A:9])/0x48130) = "00"

(default)

#CE11:

Area 11 chip enable when CEFUNC[1:0](D[A:9])/0x48130) = "01"

When CEFUNC[1:0] = "1x", this pin outputs #CE11+#CE12 signal.

#RD

–

Read signal

#WRL

#WR

#WE

–

#WRL:

Write (low byte) signal when SBUSST(D3/0x4812E) = "0" (default)

#WR:

Write signal when SBUSST(D3/0x4812E) = "1"

#WE:

DRAM write signal

#WRH

#BSH

–

#WRH:

Write (high byte) signal when SBUSST(D3/0x4812E) = "0"

(default)

#BSH:

Bus strobe (high byte) signal when SBUSST(D3/0x4812E) = "1"

#HCAS

–

#HCAS:

DRAM column address strobe (high byte) signal

#LCAS

–

#LCAS:

DRAM column address strobe (low byte) signal

BCLK

–

Bus clock output

P34

#BUSREQ

#CE6

I/O

–

P34:

I/O port when CFP34(D4/0x402DC) = "0" (default)

#BUSREQ: Bus release request input when CFP34(D4/0x402DC) = "1"

#CE6:

Area 6 chip enable when CFP34(D4/0x402DC) = "1" and

IOC34(D4/0x402DE) = "1"

P35

#BUSACK

I/O

–

P35:

I/O port when CFP35(D5/0x402DC) = "0" (default)

#BUSACK: Bus acknowledge output when CFP35(D5/0x402DC) = "1"

P30

#WAIT

#CE4&5

I/O

–

P30: I/O

port

when

CFP30(D0/0x402DC)

"0"

(default)

#WAIT:

Wait cycle request input when CFP30(D0/0x402DC) = "1"

#CE4&5: Areas

4&5

chip

enable

when

CFP30(D0/0x402DC)

"1"

and

IOC30(D0/0x402DE) = "1"

P20

#DRD

I/O

–

P20:

I/O port when CFP20(D0/0x402D8) = "0" (default)

#DRD:

DRAM read signal output for successive RAS mode when

CFP20(D0/0x402D8) = "1"

P21

#DWE

#GAAS

117

I/O

–

P21: I/O

port

when

CFP21(D1/0x402D8)

"0"

and

CFEX2(D2/0x402DF) = "0" (default)

#DWE: DRAM

read

signal

output

for

successive

RAS

mode

when

CFP21(D1/0x402D8) = "1" and CFEX2(D2/0x402DF) = "0"

#GAAS: Area

address

strobe

for

when

CFEX2(D2/0x402DF)

"1"

P31

#BUSGET

#GARD

I/O

–

P31: I/O

port

when

CFP31(D1/0x402DC)

"0"

and

CFEX3(D3/0x402DF) = "0" (default)

#BUSGET: Bus status monitor signal output when CFP31(D1/0x402DC) = "1"

and CFEX3(D3/0x402DF) = "0"

#GARD: Area

read

signal

output

for

when

CFEX3(D3/0x402DF)

"1"

EA10MD1

115

Pull-up Area 10 boot mode selection

EA10MD1 EA10MD0

Mode

External ROM mode

EA10MD0

114

–