Zenith XBR413 - Page 95

3-120
Pin description
Pin No. Pin Name Type Description
1 DGND - - - Digital GND
2 PULLUP - - - Pull-up resistance connecting port.[5V or 3.3V]
3 DASO 5V_tolerant I/O Pull-up Drive active slave presesnt signal.[open/drain]
4 HCS1 5V_tolerant I - Host interface chip, pull-up selection input.
5 HCS0 5V_tolerant I - Host interface chip, pull-up selection input.
6 HDA2 5V_tolerant I - Host interface chip, address signal input.
7 HDAO 5V_tolerant I - Host interface chip, address signal input.
8 PDIAG 5V_tolerant I/O Pull-up Diagnostic signal [open/drain]
9 HDA1 5V_tolerant I - Host interface chip, address signal input.
10 HIOCS16 5V_tolerant I Pull-up 16 bit I/O signal [open/drain]. When Ultra DMA burst, this is 3 state
port.
11 HINTRQ 5V_tolerant O Pull-up Host interrupt signal output.
12 DVDD33 - - - Digital power[3.3V]
13 DGND - - - Digital GND
14 HDMACK 5V_tolerant I/O - DMA acknowledge signal.
15 IORDY 5V_tolerant I Pull-up I/O Channel ready[open/drain]. When Ultra DMA burst, this is
DDMARDY: DSTROBE signal.
16 DIOR 5V_tolerant I/O - Host interface read input signal. When Ultra DMA burst, this is
HDMARDY: HSTROBE signal.
17 DIOW 5V_tolerant I/O - Host interface write input signal. When Ultra DMA burst, this is STOP
signal.
18 HDMARQ 5V_tolerant O Pull-up DMA request signal output.
19 DVDD25 - - - Digital power[2.5V]
20 HDD15 5V_tolerant I/O Pull-up Host interface data bus.[within slave resistance]
HDD8
21 HDD0 5V_tolerant O Pull-up Host interface data bus.[within slave resistance]
HDD6
22 HDD14 5V_tolerant I/O Pull-up Host interface data bus.[within slave resistance]
HDD9
23 HDD1 5V_tolerant I/O Pull-up Host interface data bus.[within slave resistance]
24 DVDD33 - - - Digital power[3.3V]
25 DGND - - - Digital GND
26 HDD13 5V_tolerant I/O Pull-up Host interface data bus.[within slave resistance]
HDD10
27 HDD2 5V_tolerant I/O Pull-up Host interface data bus.[within slave resistance]
HDD4