Read Sharp XG-NV1E (serv.man18) Service Manual online
XG-NV1U
10
1-5. Terminal Functions (IC5002: TE7752)
1-5-1. I/O ADDRESSES 80H PORT_bP1
20
bP10
DAC LD2
OUT
L
L
DAC2(AUDIO)CHIP SELECT SET AT “H”
21
bP11
NOT USED
OUT
L
L
22
bP12
UCSNGTG
OUT
L
H
HTG CHIP SELECT
ACTIVE AT “L”
23
bP13
SVP DT
OUT
L
H
SVP DATA
24
bP14
NOT USED
OUT
L
L
25
bP15
DAC CLK
OUT
L
H
DAC2,3,4 CLOCK
26
bP16
CAC DATA
OUT
L
H
DAC2,3,4 DATA
27
bP17
DAC LD3
OUT
L
L
DAC3(VIDEO)CHIP SELECT SET AT “H”
1-5-2. I/O ADDRESSES 81H PORT_bP2
28
bP20
SEN
OUT
L
H
PLL CHIP SELECT
ACTIVE AT “L”
29
bP21
SVPC2
OUT
L
L
SDRAM RESET,
“L” AFTER HTG
LOCKED AT “L”
INITIALIZE
30
bP22
SVPCK1
OUT
L
L
SVP CLOCK
31
bP23
DAC LD4
OUT
L
L
DAC4 (OUTPUT)
SET AT “H”
CHIP SELECT
32
bP24
UCSNOSD
OUT
L
L
→
H
OSD CHIP SELECT
4 DUMMY PULSES
WHEN CLEARED
WHEN CLEARED
33
bP25
UDT
OUT
L
H
OSD, AGA, HTG, PLL DATA
34
bP26
UCK
OUT
L
H
OSD, AGA, HTG, PLL CLOCK
35
bP27
UCSNAGA
OUT
L
H
AGA CHIP SELECT
ACTIVE AT “L”
1-5-3. I/O ADDRESSES 82H PORT_bP3
36
bP30
MOUSE
IN
(L)
(L)
MOUSE ON AT “H
37
bP31
S/VIDEO
IN
L
H/L
L: S-VIDEO, H: VIDEO
38
bP32
N.C.
IN
—
—
NOT USED
39
bP33
UTRE
IN
L
L
OSD BUSY
BUST AT “H”
41
bP34
K14
IN
H
H
KEY INPUT
ACTIVE AT “L”
42
bP35
K13
IN
H
H
KEY INPUT
ACTIVE AT “L”
43
bP36
K12
IN
H
H
KEY INPUT
ACTIVE AT “L”
44
bP37
K11
IN
H
H
KEY INPUT
ACTIVE AT “L”
COMMAND REGISTERS
PORT_CR0
89H
PORT_CR1
8AH
PORT_CR2
8BH
PORT_CR3
8CH
PIN
PIN NAME
FUNCTION
REMARKS
SIGNAL
NAME
IN/
OUT
INIT.
STANDBY
INIT.
POWER-ON
PIN
PIN NAME
FUNCTION
REMARKS
SIGNAL
NAME
IN/
OUT
INIT.
STANDBY
INIT.
POWER-ON
PIN
PIN NAME
FUNCTION
REMARKS
SIGNAL
NAME
IN/
OUT
INIT.
STANDBY
INIT.
POWER-ON
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