SAB82538 Datasheet, PDF (37/253 Pages) Infineon Technologies AG – ICs for Communications

SAB 82538
SAF 82538
Table 2
Data Bus Access (16-Bit Motorola Mode)
BLE A0 Register Access
ESCC8 Data Pins Used
0
0
FIFO word access
D0 – D15
Register word access (even addresses)
0
1
Register byte access (odd addresses) D0 – D7
1
0
Register byte access (even addresses) D8 – D15
1
1
No transfer performed
None
The assignment of registers with even/odd addresses to the data lines in case of 16-bit
register access depends on the selected microprocessor interface mode:
Siemens/Intel (Adr. n + 1)
(Adr. n)
Motorola
(Adr. n)
(Adr. n + 1)
↑
↑
↓
↓
Data Lines D15
D8 D7
D0
n: even address
Complete information concerning register functions is provided in chapter 4 – Detailed
Register Description. The most important functions programmable via these registers
are:
q Setting of serial, operating and clocking modes
q Layer-2 functions
q Data transfer modes (Interrupt, DMA)
q Bus mode
q DPLL mode
q Baud rate generator
q Test loop.
Each of the eight serial channels of ESCC8 is controlled via an identical, but totally
independent register set (Channel 0…7). Functions which are common to or
independent from all eight channels, e.g. interrupt information or universal port
programming, are accessible via all register sets, which simplifies software
development.
Semiconductor Group
37