| Signal |
| Parameter |
|
| Mode |
| Min |
| Typ |
| Max |
|
|
| Unit |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| High level output voltage (VOH) |
|
| 1.8V |
| 0.9xSIMVCC |
|
|
|
|
|
|
| V |
| SIMCLK |
|
|
| 3.0V |
| 0.9xSIMVCC |
|
|
|
|
|
|
| V | |
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
| SIMRST |
| Low level output voltage (VOL) |
|
| 1.8V |
|
|
|
|
| 0.4 |
|
|
| V |
|
|
|
| 3.0V |
|
|
|
| 0.4 |
|
|
| V | |||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
5.11.7 SIM Detection (SIMDET)
SIMDET is used to determine whether a SIM card has been inserted into or removed from the SIM card holder. You should normally wire it to the ‘card inserted switch’ of the SIM card holder, but different implementations are possible.
When left open, an internal
In order to meet regulatory approval requirements, the SIMDET function must be implemented in the host application.
NOTE
5.12 Synchronous Serial Port (SSP) Interface [to be implemented in a future release]
Pin |
| Name |
| Direction |
| Function |
|
|
|
|
|
|
|
70 |
| SSPCLK |
| In/Out |
| SPI clock |
71 |
| SSPFS |
| In/Out |
| SPI frame synchronization |
72 |
| SSPDTM |
| Input |
| SPI data to module from host |
73 |
| SSPDFM |
| Output |
| SPI data to host from module |
The SSP interface provides a synchronous serial peripheral interface based on the Motorola SPI protocol.
The SSPI interface operates in a single master mode only, with the module acting as master. Four clock rates are supported through programming; 1.5MHz, 800kHz, 400kHz, 200kHz. The interface supports a variable word size, between 4bits to 16 bits. Continuous Transfer modes are not supported.
The SSP supports programmable data sizes of 4 bits to 16 bits, in addition to which the polarity of the clock signal to the SPCLK pin is programmable through a register.
LZT 123 1836 | 60 |