Z90102 Datasheet, PDF (27/36 Pages) Zilog, Inc. – 40-Pin Low-Cost Digital Television Controller

Zilog
DTC CONTROL REGISTER DIAGRAMS
Port Registers
P2
02H
D7 D6 D5 D4 D3 D2 D1 D0
Input/Output Port
0 Logic Level 0
1 Logic Level 1
Figure 31. Port 2 Register
(Read/Write)
P2M
F6H
D7
D6
D5
D4
D3
D2
D1
D0
Input/Output Mode
0 Output Mode
1 Input Mode
Figure 32. Port 2 Mode Register
(Write Only)
Z90102/90103/90104
40-Pin Low-Cost Digital Television Controller
1
P3
03H
D7 D6 D5 D4 D3 D2 D1 D0
P30 Input Port
Stop-Mode Recovery Input
P31 Input/T1 (input)
P34 Output Port
P35 Output Port
P36 Output/T1, T0 (output)
Reserved
Figure 33. Port 3 Register
(P30, P31 Read Only)
(P34, P35, P36 Write Only)
P6
FC32H
D7 D6 D5 D4 D3 D2 D1 D0
Port 6 Input
0 Logic Level 0
1 Logic Level 1
Port 6 Comparator Input
00 GND thru V1
0 1 V1 thru V2
11 V2 thru VCC
Figure 34. Port 6 Register
(Read Only)
DS97TEL1902
27