PSB7238 Datasheet, PDF (129/190 Pages) Siemens Semiconductor Group – Joint Audio Decoder-Encoder - Multimode

PSB 7238
Firmware Features
The following steps are executed:
1. The host generates an interrupt to the JADE by writing value 19_H into INH interrupt
status register at address 50_H.
2. The JADE writes the firmware version number into communication register accessible
from the host at address 60_H and resets the INHB bit to 0.
3. The host checks the INHB bit and as soon as it reads a ‘0’ it may get the version
number from register 60_H.
The version number of JADE MM 2.1 is (for historical reasons) 33_H, so the “xyh” in the
picture above has to be substituted by this number.
6.1.2 Software Reset
A software reset (see Figure 40) is used to re-initialize the JADE without resetting the
hardware. This means that e.g. not the whole configuration/control register area is reset,
but only the firmware initialization (see Section 5.3 and Section 5.4) is executed.
Figure 40
Semiconductor Group
129
Data Sheet 1998-07-01