Z90102 Datasheet, PDF (19/36 Pages) Zilog, Inc. – 40-Pin Low-Cost Digital Television Controller

Zilog
REGISTER POINTER
7 654000 0
Working Register
Group Pointer
Must be "0"
Z8 Reg. File
%FF
%FO
%7F
Z90102/90103/90104
40-Pin Low-Cost Digital Television Controller
Z8 STANDARD CONTROL REGISTERS
RESET CONDITION
1
REGISTER
D7 D6 D5 D4 D3 D2 D1 D0
% FF
SPL
UU UU UU U U
% FE
6P
% FD
RP
UU UU UU U U
UU UU UU U U
% FC
FLAGS
UU UU UU U U
% FB
IMR
0 U UU UU U U
% FA
IRQ
00 00 00 0 0
% F9
% F8
% F7
% F6
% F5
% F4
% F3
% F2
% F1
% F0
IPR
Reserved
P3M
P2M
PRE0
T0
PRE1
T1
TMR
Reserved
UU UU UU U U
01 10 11 0 1
00 00 00 0 0
11 11 11 1 1
UU UU UU U 0
UU UU UU U U
UU UU UU 0 0
UU UU UU U U
00 00 00 0 0
Reserved
%0F
%00
Note: All General-Purpose registers, PWM Registers,
and Video RAM registers, Port 4, 5, and 6
registers are undefined after reset.
Legend:
U = Unknown
EXPANDED REG. GROUP (0)
REGISTER
RESET CONDITION
% (0) 03
% (0) 02
% (0) 01
P3
P2
Reserved
U1 1 1 UU U U
UU U U UU U U
% (0) 00
Reserved
Figure 17. Z90102/3/4 Register File Reset Condition
DS97TEL1902
19