DSM2180F3 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
DSM2180F3
STMicroelectronics
'DSM2180F3' PDF : 63 Pages View PDF
DSM2180F3
RUNTIME CONTROL REGISTER DEFINITION
There are up to 256 addresses decoded inside the
DSM device for control and status information. 27
of these locations contain registers that the DSP
can access at runtime. The base address of this
block of 256 locations is referred to in this manual
as csiop (Chip Select I/O Port). Table 4 lists the 27
registers and their offsets (in hex) from the csiop
base address needed to access individual DSM
control and status registers. The DSP will access
these registers in I/O memory space using its IOMS
strobe. These registers are accesses in bytes, so
the DSP should ignore the upper byte of its 16-bit
I/O access.
Note1: All csiop registers are cleared to logic 0 at
reset.
Note2: Do not write to unused locations within the
csiop block of 256 registers. They should remain
logic zero.
Table 4. CSIOP Registers and their Offsets (in hex)
Register Name
Port B Port C Port D Other
Description
Data In
01
10
11
MCUI/O input mode. Read to obtain current logic level of
Port pins. No writes.
Data Out
05
12
13
MCU I/O output mode. Write to set logic level on Port
pins. Read to check status.
ct(s) Direction
07
14
15
MCU I/O mode. Configures Port pin as input or output.
Write to set direction of Port pins.
Logic 1 = out, Logic 0 = in. Read to check status.
rodu Drive Select
09
16
17
Write to configure Port pins as either standard CMOS or
Open Drain on some pins, while selecting high slew rate
on other pins. Read to check status.
P Input Macrocells
0B
18
Read to obtain state of IMCs. No writes.
lete Enable Out
0D
1A
1B
Read to obtain the status of the output enable logic on
each I/O Port driver. No writes.
bso Output Macrocells AB
20
Read to get logic state of output of OMC bank AB.
Write to load registers of OMC bank AB.
- O Output Macrocells BC
21
Read to get logic state of output of OMC bank BC.
Write to load registers of OMC bank BC.
uct(s) Mask Macrocells AB
Write to set mask for loading OMCs in bank AB. A logic
22
1 in a bit position will block reads/writes of the
corresponding OMC. A logic 0 will pass OMC value.
Read to check status.
Prod Mask Macrocells BC
Write to set mask for loading OMCs in bank BC. A logic
23
1 in a bit position will block reads/writes of the
corresponding OMC. A logic 0 will pass OMC value.
Read to check status.
lete Flash Sector Protect
C0
Read to determine Flash Sector Protection Setting. No
writes.
Obso Security Bit
C2
Read to determine if DSM devices Security Bit is active.
Logic 1 = device secured. No writes.
JTAG Enable
C7
Write to enable JTAG Pins (optional feature). Read to
check status.
PMMR0
B0 Power Management Register 0. Write and read.
PMMR2
B4 Power Management Register 2. Write and read.
Page
E0 Memory Page Register. Write and read.
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