LG RH4820W Service Manual page 81

Pin description
Pin No. Pin Name
1 DGND -
2 PULLUP -
3 DASO 5V_tolerant
4 HCS1 5V_tolerant
5 HCS0 5V_tolerant
6 HDA2 5V_tolerant
7 HDAO 5V_tolerant
8 PDIAG 5V_tolerant
9 HDA1 5V_tolerant
10 HIOCS16 5V_tolerant
11 HINTRQ 5V_tolerant
12 DVDD33 -
13 DGND -
14 HDMACK 5V_tolerant
15 IORDY 5V_tolerant
16 DIOR 5V_tolerant
17 DIOW 5V_tolerant
18 HDMARQ 5V_tolerant
19 DVDD25 -
20 HDD15 5V_tolerant
HDD8
21 HDD0 5V_tolerant
HDD6
22 HDD14 5V_tolerant
HDD9
23 HDD1 5V_tolerant
24 DVDD33 -
25 DGND -
26 HDD13 5V_tolerant
HDD10
27 HDD2 5V_tolerant
HDD4
Type Description
- - Digital GND
- - Pull-up resistance connecting port.[5V or 3.3V]
I/O Pull-up Drive active slave presesnt signal.[open/drain]
I - Host interface chip, pull-up selection input.
I - Host interface chip, pull-up selection input.
I - Host interface chip, address signal input.
I - Host interface chip, address signal input.
I/O Pull-up Diagnostic signal [open/drain]
I - Host interface chip, address signal input.
I Pull-up 16 bit I/O signal [open/drain]. When Ultra DMA burst, this is 3 state
port.
O Pull-up Host interrupt signal output.
- - Digital power[3.3V]
- - Digital GND
I/O - DMA acknowledge signal.
I Pull-up I/O Channel ready[open/drain]. When Ultra DMA burst, this is
DDMARDY: DSTROBE signal.
I/O - Host interface read input signal. When Ultra DMA burst, this is
HDMARDY: HSTROBE signal.
I/O - Host interface write input signal. When Ultra DMA burst, this is STOP
signal.
O Pull-up DMA request signal output.
- - Digital power[2.5V]
I/O Pull-up Host interface data bus.[within slave resistance]
O Pull-up Host interface data bus.[within slave resistance]
I/O Pull-up Host interface data bus.[within slave resistance]
I/O Pull-up Host interface data bus.[within slave resistance]
- - Digital power[3.3V]
- - Digital GND
I/O Pull-up Host interface data bus.[within slave resistance]
I/O Pull-up Host interface data bus.[within slave resistance]
3-101