z90102 ZiLOG Semiconductor, z90102 Datasheet - Page 19

• Manufacturer Part Number: z90102
• Description: 40-pin Low-cost Digital Television Controller
• Manufacturer: ZiLOG Semiconductor

Zilog
DS97TEL1902
Working Register
Note: All General-Purpose registers, PWM Registers,
and Video RAM registers, Port 4, 5, and 6
registers are undefined after reset.
Group Pointer
%FO
%7F
%0F
%00
%FF
7
REGISTER POINTER
6
5
Z8 Reg. File
4
0
0
Figure 17. Z90102/3/4 Register File Reset Condition
0
0
Must be "0"
Legend:
U = Unknown
Reserved
REGISTER
EXPANDED REG. GROUP (0)
REGISTER
Z8 STANDARD CONTROL REGISTERS
% FF
% FE
% FD
% FC
% FB
% FA
% F9
% F8
% F7
% F6
% F5
% F4
% F3
% F2
% F1
% F0
% (0) 03
% (0) 02
% (0) 01
% (0) 00
40-Pin Low-Cost Digital Television Controller
SPL
6P
RP
FLAGS
IMR
IRQ
IPR
Reserved
P3M
P2M
PRE0
T0
PRE1
T1
TMR
P3
P2
Reserved
Reserved
Reserved
RESET CONDITION
RESET CONDITION
D7 D6 D5 D4 D3 D2 D1 D0
U
U
U
0
0
U
U
U
0
0
U
1
U
U
U
U
0
1
U
0
U
U
U
U
U
0
U
1
1
U
U
U
U
0
1
U
Z90102/90103/90104
U
U
U
U
U
0
U
1
0
1
U
U
U
U
0
U
0
U
U
U
U
0
U
0
1
U
U
U
U
0
1
U
U
1
0
U
U
U
U
0
U
1
U
U
U
U
0
U
U
U
0
U
U
U
U
0
U
1
1
U
U
U
U
0
U
U
U
U
U
U
U
0
U
0
0
1
U
U
0
U
0
U
U
U
1
0
U
U
U
U
U
0
U
1
0
U
0
U
0
U
19
1