Installation Instructions

SIM5216A _HD_V1.02 Hardware Design
SIM5216A _HD_V1.02 26.08.2010
53
T(hdin) PCM_DIN hold time after falling edge of
PCM_CLK
10 – – ns
T(pdout) Delay from PCM_CLK rising to PCM_DOUT
valid
– – 350
ns
T(zdout)
Delay from PCM_CLK falling to PCM_DOUT
HIGH-Z
– 160 –
ns
3.18.3 Transmitting PCM data by USB
Not only by hardware PCM interface, but also SIM5216A can transmit PCM data by USB.
To transmit PCM data by USB, one should make sure that driver of SIM5216A has be loaded on
host part. Then the NEMA port of SIM5216A can be recognized by host. One can switch it from
NEMA port mode to data mode or from data mode to NEMA port mode by AT+DSWITCH. In
data mode, one can control sending and receiving PCM data by AT+CPCMREG.
Note: For 5213/5214/5215/5216, NEMA port is used to transmit PCM data.Please reference
document [22] for detailed information of PCM Application Note.
3.19 Firmware update
If SIM5216A modules are embed into user’s equipment and can’t be taken out easily, modules
provide two firmware update methods that called SD card update and USB interface update.
3.19.1 SD Card update
SD card update means that user can use SD card which the new firmware has been put in the
SIM5216A modules to update the old Firmware .