Motorola ASTRO XTSTM 4000 Detailed Service Manual page 115

Troubleshooting Tables: List of Board and IC Signals
U1401
Description
Pin No.
U22 USB_TXENAB
B3 CODEC_FSYNC
L20 NC
Y3 MAKO_RESET
K20 NC
W4 OC3_PC13_FRAME_TICK
D3 CKIH_VOCON
V3 GATED_32_KHZ
J20 NC
U7 MOD
D14 TEST
K4 MMC_OD_EN
L3 MMC_CMD
L20 MMC_DAT
L4 MMC_CLK
D22 CLKGPS
D21 PECLREF
C22 MAG
C21 SIGN
E21 CLKACQ
C20 NC
D19 NC
E20 NC
B11 ONE_WIRE_EN
K17 KVL_USB_DET
K21 16out
Y22 BAT_BUS_EN
W3 USB_ENUM
L17 RESET
AA2 USB_VPI
6871620L01-C
Table 7-7. U1401 Patriot MCU/DSP IC Pinouts (Continued)
To/From
Pin B8 of U1304
R1411
No Connect
C1425
No Connect
R1412
C1402
C1301
Square Wave
No Connect
R1224
No Connect
No Connect
No Connect
No Connect
No Connect
R1466
R1465
R1464
R1463
R1462
No Connect
No Connect
No Connect
No Connect
Pin D10 of U1304
*
16out (TP)
No Connect
No Connect
Pin 1 of D1401
Pin B9 of U1304
Accessible
Comment on
Mainboard?
No
Yes
No
Yes
No
Yes
16.8 MHz Yes
32.768 kHz Yes
No
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
No
No
Yes
No
May 28, 2008
7-15