LZT 123 1836
29
Pin Name
Direction Function
PIN
Connection
Required
77 MMCDAT1
In/Out SD/MMC card data 1
78 MMCDAT2
In/Out SD/MMC card data 2
79 MMCDAT3
In/Out SD/MMC card data 3
80 MMCMD_EN
Output SD/MMC card command enable
81 MMCDAT_EN Output SD/MMC card data enable (data 1-3)
82 MMCDAT_EN0
Output SD/MMC card data enable (data 0)
83 KEYROW1 Input
Keyboard row 1
84 KEYROW2 Input
Keyboard row 2
85 KEYROW3 Input
Keyboard row 3
86 KEYROW4 Input
Keyboard row 4
87 KEYROW5 Input
Keyboard row 5
88 KEYCOL1
Output Keyboard row 1
89 KEYCOL2
Output Keyboard row 2
90 KEYCOL3
Output Keyboard row 3
91 KEYCOL4
Output Keyboard row 4
92 AUXIP
Input
Aux audio to module from host (pos)
93 AUXIN
Input
Aux audio to module from host (neg)
94 AUXOP
Output Aux audio from module to host (pos)
95 AUXON
Output Aux audio from module to host (neg)
96 AREF
-
Analogue reference
97 MICIP
Input Microphone input
positive
98 MICIN
Input Microphone input
negative
99 EARP
Output Earpiece output positive
100 EARN
Output Earpiece output negative
1
- These signals are required if the external SIM interface is used
2
- At least one of these interfaces is required to be connected
3, 4
- At least one of these interfaces is required to be connected
5
- These pin connections are required for sleep mode operation
NOTE
