6871620L01-C
May 28, 2008
Troubleshooting Tables:
List of Board and IC Signals
7-15
U22
USB_TXENAB
Pin B8 of U1304
No
B3
CODEC_FSYNC
R1411
Yes
L20
NC
No Connect
No
Y3
MAKO_RESET
C1425
Yes
K20
NC
No Connect
No
W4
OC3_PC13_FRAME_TICK
R1412
Yes
D3
CKIH_VOCON
C1402
16.8 MHz
Yes
V3
GATED_32_KHZ
C1301
32.768 kHz
Square Wave
Yes
J20
NC
No Connect
No
U7
MOD
R1224
Yes
D14
TEST
No Connect
No
K4
MMC_OD_EN
No Connect
No
L3
MMC_CMD
No Connect
No
L20
MMC_DAT
No Connect
No
L4
MMC_CLK
No Connect
No
D22
CLKGPS
R1466
Yes
D21
PECLREF
R1465
Yes
C22
MAG
R1464
Yes
C21
SIGN
R1463
Yes
E21
CLKACQ
R1462
Yes
C20
NC
No Connect
No
D19
NC
No Connect
No
E20
NC
No Connect
No
B11
ONE_WIRE_EN
No Connect
No
K17
KVL_USB_DET
Pin D10 of U1304
No
K21
16out
16out (TP)
*
Yes
Y22
BAT_BUS_EN
No Connect
No
W3
USB_ENUM
No Connect
No
L17
RESET
Pin 1 of D1401
Yes
AA2
USB_VPI
Pin B9 of U1304
No
Table 7-7. U1401 Patriot MCU/DSP IC Pinouts (Continued)
U1401
Pin No.
Description
To/From
Comment
Accessible
on
Mainboard?
Summary of Contents for ASTRO XTSTM 4000
Page 1: ...COLOR CHORDS 7 ASTRO XTSTM 4000 Portable Radio Detailed Service Manual ...
Page 2: ......
Page 16: ...May 28 2008 6871620L01 C xiv Commercial Warranty Notes ...
Page 22: ...May 28 2008 6871620L01 C 1 6 Introduction Notes ...
Page 26: ...May 28 2008 6871620L01 C 2 4 Radio Power Notes ...
Page 56: ...May 28 2008 6871620L01 C 3 30 Theory of Operation Notes ...
Page 100: ...May 28 2008 6871620L01 C 6 8 Troubleshooting Waveforms Notes ...
Page 194: ...May 28 2008 6871620L01 C B 2 Motorola Service Centers Notes ...
Page 204: ...May 28 2008 6871620L01 C Glossary 10 Glossary Notes ...
Page 209: ......