Motorola ASTRO XTSTM 4000 Detailed Service Manual page 117

Troubleshooting Tables: List of Board and IC Signals
U1401
Description
Pin No.
AA10 Address 21
U11 Address 22
U10 Address 23
AB3 Data 15
AA3 Data 14
AB4 Data 13
AA4 Data 12
Y5 Data 11
AA5 Data 10
AA6 Data 9
Y6 Data 8
Y7 Data 7
AA7 Data 6
AB7 Data 5
AB8 Data 4
AA8 Data 3
Y8 Data 2
Y9 Data 1
AA9 Data 0
Y18 R_W_N
U14 CS5
Y19 CS4_N
AA20 CS3_N
AB20 CS2_N
AA16 CS1_N
AA21 CS0_N
U21 OE_N
V21 EB1_N
AA18 EB0_N
V20 SEB_N_PA5
6871620L01-C
Table 7-7. U1401 Patriot MCU/DSP IC Pinouts (Continued)
To/From Comment
E1125
E1124
E1123
E1122
E1121
E1120
E1119
E1118
E1117
E1116
E1115
E1114
E1113
E1112
E1111
E1110
E1129
R1467
No Connect
E1127
Pin B4 of U1409
No Connect
Pin E7 of U1410
Pin A2 of U1409
Pin A1 of U1409
Pin B2 of U1409
No Connect
7-17
Accessible
on
Mainboard?
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
No
No
No
May 28, 2008