Zv Port Implementation For Socket A And B; Pc Card, Zv Port, And Pd6722 Pin Assignment - Intel PD6730 Application Note

7.0

ZV Port Implementation for Socket A and B

Figure 4 shows the ZV Port support for socket A and B. If using the GD7XXX, two of the GPO
pins can control the buffer output enables. Since there is only one V-Port, a ZV Port PC Card can
be inserted in either Socket A or Socket B.
Figure 4. ZV Port Implementation for Socket A and B
GLUE LOGIC
2 NAND GATES
1 INVERTER
PD6722
PD6729
PD6730
PD6832
PD6833
Table 1. PC Card, ZV Port, and PD6722 Pin Assignment (Sheet 1 of 2)
PC Card
PC Card
Pin
Pin
Number
8 A10
10 A11
11 A9
12 A8
13 A13
14 A14
NOTE: 'I' indicates that the signal is an input to the PC Card; 'O' indicates that the signal is an output from the PC Card.
Controller ignores BVD2/SPKR#, IOIS16#, and INPACK# during ZV Port operation.
Application Note
TVON
VPCNTL
GD7XXX
V-PORT
OE
BUFFER
R
PC CARD BUS A
P
PC CARD BUS B
I/O in PC
ZV Port Pin
Card
Name
Mode
I HREF
I VSYNC
I Y0
I Y2
I Y4
I Y6
PD672X/30/32/33 — ZV Port Implementation
OE
BUFFER
SOCKET A
Z
X
SOCKET B
I/O in ZV PD6722S PD6722S
Port Mode ocket A ocket B
O 21
O 25
O 28
O 30
O 33
O 35
AUDIO
ZV PORT PC CARD
ZV PORT PC CARD
Comments
85 Horizontal sync to ZV Port
89 Vertical sync to ZV Port
91 Video data to ZV Port
93 Video data to ZV Port
95 Video data to ZV Port
97 Video data to ZV Port
11