Motorola ASTRO XTS 5000 Detailed Service Manual page 97

Troubleshooting Tables: List of Board and IC Signals
U401
Pin No.
E4
B1
F4
F5
C7
C6
G10
G16
J11
A12
A11
E9
C15
F12
D15
E14
D16
G12
K11
K14
K13
D5
H14
K4
F9
J2
A6
6881094C31-C
Table 7-7. U401 Patriot MCU/DSP IC Pinouts (Continued)
Description
SCKB
NOT USED
NOT USED
SPI_MOSIB
SCKA
MOSIA
NOT USED
OPT_SEL1_OUT
CODEC_RX
RX_SSI_FSYNC
RX_SSI_CLK
TX_SSI_DATA
BSY_OUT_CTS*
UTXD2
USB_SUSP
DISPLAY_R_W*
NOT USED
UCTS1_USB_SPEED*
UTXD1_USB_VPO
USB_VMO
USB_TX_EN
8 KHZ_INT
BL_EN
LV_DETECT
NOT USED
NOT USED
16_8_MHZ
To/From Comment
SCKB SPI B Clock
MOSIB SPI Data Out
SCKA SPI A Clock
MOSIA SPI Data Out
U201, pin 3
R403 DSP to GCAP
Rx Audio Data
R123 20 kHz pulse
R124 1.2 MHz
R127 Data From
DSP to A/D
U303, pin 1*
D403, pin 3 W = 0 V
R406 8 kHz Pulse
C124
POR 3.0 V
C452* 16.8 MHz
7-13
Accessible
on Vocon?
Yes
No
No
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
No
No
No
No
Yes
Yes
Yes
No
No
Yes
October 14, 2003