PSB7238 SIEMENS [Siemens Semiconductor Group], PSB7238 Datasheet - Page 39

• Manufacturer Part Number: PSB7238
• Description: Joint Audio Decoder-Encoder - Multimode
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

lower priority interrupt statuses on INT (host) and/or INT1 (DSP).
High priority interrupts (INTR/INT0):
FSC, RFS, TFS
BFUL1, BFUL2, BEMP1, BEMP2, BFHR1, BFHX1, BFHR2, BFHX2
Lower priority interrupts (INT/INT1):
T1, T2, T3
SAIN
HDLC1, HDLC2
HINT (to DSP) or DINT (to Host)
RACC (to DSP only)
GPI
MDR, MER, MDA, MAB, CIC1, CIC2
The active level of INTR and INT lines is “low”, of INT0 and INT1 “high”.
The interrupt line will remain active as long as an interrupt status (if unmasked) is not
explicitly acknowledged, or the cause of the interrupt status has not been removed.
The registers for the interrupt status as well as the configuration and control registers
(from address 2000
Registers Pertaining to the Mailbox
The function of these host registers is described in detail in the next section.
Hardware Interrupt Registers
In the following the interrupts for the host are listed, as well as, for completeness, those
for the embedded DSP.
The interrupts are grouped so that the high priority interrupt statuses may cause a
maskable interrupt on INTR (“Interrupts Real-time” for host) and/or INT0 (DSP), and the
Semiconductor Group
H
upwards) are described in detail in Section 5.
39
Interfaces and Memory Organization
Data Sheet 1998-07-01
PSB 7238