Z89135 Datasheet, PDF (32/66 Pages) Zilog, Inc. – Low-Cost DTAD Controller

Z89135/136 (ROMless)
Low-Cost DTAD Controller
FUNCTIONAL DESCRIPTION (Continued)
Zilog
REGISTER POINTER
7654321 0
Working Register
Group Pointer
Expanded Register
Bank Pointer
Z8 Reg. File
FFH
FOH
7FH
0FH
00H
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
Z8 STANDARD CONTROL REGISTERS
REGISTER BANK (0)
REGISTER GROUP 15(F)
FFH
SPL
FEH
SPH
FDH
RP
FCH
FLAGS
FBH
IMR
FAH
IRQ
F9H
IPR
† ^F8H
* ^F7H
*
F6H
F5H
P01M
P3M
P2M
PRE0
% F4
T0
F3H
PRE1
F2H
T1
F1H
TMR
F0H
Reserved
RESET CONDITION
D7 D6 D5 D4 D3 D2 D1 D0
U UUU UU U U
U UUU UU U U
0 000 00 0 0
U UUU UU U U
0 UUU UU U U
0 000 00 0 0
U UUU UU U U
0 100 11 0 1
0 000 00 0 0
1 111 11 1 1
U UUU UU U 0
U UUU UU U U
U UUU UU 0 0
U UUU UU U U
0 000 00 0 0
Z8 EXPANDED REGISTER BANK (F)
REGISTER GROUP 0 (0)
*
(F) 0FH
(F) 0EH
(F) 0DH
(F) 0CH
*
(F) 0BH
(F) 0AH
(F) 09H
(F) 08H
(F) 07H
(F) 06H
(F) 05H
(F) 04H
(F) 03H
(F) 02H
(F) 01H
(F) 00H
WDTMR
Reserved
Reserved
DSP CON
SMR
Reserved
Reserved
Reserved
Reserved
P45CON
P5M
P5
P4M
P4
Reserved
PCON
RESET CONDITION
UUU0 11 0 1
UUU 1 UU U U
00 10 00 0 0
UUU 0U U U 0
11 11 11 1 1
UU UUUUU U
11 11 11 1 1
UUU U U U U U
11 11 11 1 0
Z8 EXPANDED REGISTER BANK (B)
Z8-DSP Mailbox Interface
(R0...R15)
Z8 STANDARD REGISTER BANK (0)
REGISTER GROUP 0
* ^{(0) 03H}
P3
* ^{(0) 02H}
P2
* ^{(0) 01H}
P1
* ^{(0) 00H}
P0
RESET CONDITION
1 1 1 1 UU U U
UU U U UU U U
UU U U UU U U
UU U U UU U U
U = Unknown
† = For ROMless mode, RESET Condition 10110110
* ^{Will not be Reset with a Stop-Mode Recovery}
Figure 20. Expanded Register File Architecture
1-32
PRELIMINARY
DS97TAD0300