Need help with T9769 pinout

Page 1/3
| 2 | 3

By dhau

Paragon (1570)

dhau's picture

29-10-2004, 18:24

Does anyone has description of pins for T9769?

It's used in most MSX2+ machines, and I'm trying to get a better understanding of how it works.

I took 1x64k, 4x256k and SIMM pin descriptions from here:

www.qsl.net/yo5ofh/data_sheets/mem-ram.htm

4164                                         
64kx1 DRAM                              
                                        
     +---+--+---+                       
     |1  +--+ 16| GND                   
   D |2       15| /CAS                  
 /WE |3       14| Q        SIMM30                                 
/RAS |4  4164 13| A6                                              
  A0 |5       12| A3        1 VCC     16 D4                       
  A2 |6       11| A4        2 /CAS    17 A8                       
  A1 |7       10| A5        3 D0      18 A9                       
 VCC |8        9| A7        4 A0      19 A10                      
     +----------+           5 A1      20 D5                       
                            6 D1      21 /WR                      
                            7 A2      22 GND                      
44256                       8 A3      23 D6                       
256kx4 DRAM                 9 GND     24 A11 BAT                  
                           10 D2      25 D7     
     +---+--+---+          11 A4      26 Q8     
  D0 |1  +--+ 20| GND      12 A5      27 /RAS   
  D1 |2       19| D3       13 D3      28 /CAS8  
 /WE |3       18| D2       14 A6      29 DP8    
/RAS |4       17| /CAS     15 A7      30 VCC    
     |5 44256 16| /OE
  A0 |6       15| A8
  A1 |7       14| A7
  A2 |8       13| A6
  A3 |9       12| A5
 VCC |10      11| A4
     +----------+

I already have pin numbering for T9769, but no description:

Toshiba T9769 "MSX Engine"


    108 107       74 73
      |  | ....... |  |
      _________________
109--|                 |--72
     |                 |    
110--|                 |--71
    :|     TOSHIBA     | :  
    :|                 | :
    :|      T9769      | :
143--|                 |--38
     | o               |    
144--|_________________|--37
      |  | ....... |  |
      1  2        35 36
Login or register to post comments

By anonymous

incognito ergo sum (116)

anonymous's picture

29-10-2004, 20:51

I could help you, but since you repeatedly stated you don't read my messages at all, it has no use...

By mars2000you

Enlighted (5957)

mars2000you's picture

29-10-2004, 21:48

dhau, take a look at this page :

http://www.msxpro.com/datasheet.html

Alas, the datasheet that you are looking for is missing ..

By Sonic_aka_T

Enlighted (4130)

Sonic_aka_T's picture

29-10-2004, 22:24

sapo! Tongue

By Yobi

Master (149)

Yobi's picture

31-10-2004, 10:53

1 D0
2 D1
3 D2
4 D3
5 D4
6 D5
7 D6
8 D7
9 SLT30 inv.
10 DSEL1
11 DSEL0
12 FCEN inv.
13 MTRON
14 SIDSL
15 DREQ
16 IREQ
17 BUEN
18 VDD
19 BVSS
20 OSCIN
21 OSCOUT
22 ALARM
23 ROCE inv.
24 RO14
25 RO15
26 RO16
27 CS1 inv.
28 CS2
29 CS12 inv.
30 BSDR inv.
31 SLT1 inv.
32 SLT2 inv.
33 SLT00 inv.
34 SLT01 inv.
35 SLT02 inv.
36 SLT03 inv.
37 SLT31 inv.
38 SLOTSL
39 RA0
40 RA1
41 RA2
42 RA3
43 RA4
44 RA5
45 RA6
46 RA7
47 RA8
48 RAS inv.
49 CAS0 inv.
50 CAS1 inv.
51 MPSL0
52 MPSL1
53 CA0
54 CA1
55 CA2
56 VDD
57 VSS
58 CA3
59 CA4
60 CA5
61 CA6
62 CA7
63 CA8
64 CA9
65 CA10
66 CA11
67 CA12
68 CA13
69 CA14
70 CA15
71 MREQ inv.
72 IORQ inv.
73 RD inv.
74 WR inv.
75 M1 inv.
76 RFSH inv.
77 WAIT inv.
78 BUSRQ inv.
79 BUSAK inv.
80 RST inv.
81 CLOCK
82 TEST
83 ICE
84 AVCS inv.
85 SRST inv.
86 MTRD
87 SLDR inv.
88 KANCS inv.
89 VCSW inv.
90 VSS
91 VDD
92 VCSR inv.
93 PBUSY
94 PSTR inv.
95 PWR inv.
96 CLIC
97 AUDIOC
98 AUDIOB
99 AUDIOA
100 OUT2
101 TRG22
102 TRG21
103 RIGHT2
104 LEFT2
105 BACK2
106 FWD2
107 OUT1
108 TRG12
109 TRG11
110 RIGHT1
111 LEFT1
112 BACK1
113 FWD1
114 KLS
115 CMTON
116 CMTWR
117 CMTRD
118 VINT inv.
119 VSYNC
120 EXINT inv.
121 KS10
122 KS9
123 KS8
124 VSS
125 VDD
126 KS7
127 KS6
128 SK5
129 KS4
130 KS3
131 KS2
132 KS1
133 KS0
134 K7
135 K6
136 K5
137 K4
138 K3
139 K2
140 K1
141 K0
142 KANA
143 CAPS
144 PAUSE inv.

The data from the FS-A1GT technical guide.
Good luck with it.

Gr, Jos aka -=[UMF]=-Yobi

By anonymous

incognito ergo sum (116)

anonymous's picture

31-10-2004, 13:10

If I'm not mistaken the GT uses a T9769C, while most MSX2+'s use a T9769B. I wouldn't simply assume the pinouts are the same.

By dhau

Paragon (1570)

dhau's picture

31-10-2004, 16:23

Thanks Yobi!

I knew from Guillian's instructions, that pins 50, 51 and 52 are crucial to extending memory from 64 to full 512K (max DRAM size, supported by T9769 directly)

By dhau

Paragon (1570)

dhau's picture

01-11-2004, 00:17

Picture of T9769C from my Panasonic FS A1WSX before 512K mod:

www.flickr.com/photos/1020150_3501a97c86.jpg

By dhau

Paragon (1570)

dhau's picture

04-11-2004, 22:54

To top a popular speculation that T9769B is in MSX2+ and T9769C is in Turbo-R computers, which is not ture, here is another one:

T9769B and T9769C are pin-compatible. The Z80 core in T9769B can only work at standard speed (1x - ~3.58MHz), while T9769C Z80 core can be soft-switched to "turbo" mode (1.5x - ~5.4Mhz). All Panasonic MSX2+ computers are equiped with T9769C (A1FX, WX and WSX), while all other MSX2+ models, both from Sanyo and Sony, are using T9769B

Let me know what you think about the "new and improved" speculation!

By anonymous

incognito ergo sum (116)

anonymous's picture

05-11-2004, 14:43

For that speculation to be true, the turboR's Z80 must be switchable to 5.38MHz too.
Who will test this?

By flyguille

Prophet (3028)

flyguille's picture

05-11-2004, 15:05

would be great if yobi post here the description text of each pin or a link to an scanned page.

Page 1/3
| 2 | 3