DSM2190F4 STMicroelectronics, DSM2190F4 Datasheet - Page 15

• Manufacturer Part Number: DSM2190F4
• Description: DSM (Digital Signal Processor System Memory) For Analog Devices ADSP-2191 DSPs (3.3V Supply)
• Manufacturer: STMicroelectronics

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 hexadecimal) from
the csiop base address needed to access individ-
ual DSM control and status registers. The DSP will
access these registers in I/O memory space using
Table 4. CSIOP Registers and their Offsets (in hexadecimal)
Data In
Data Out
Direction
Drive Select
Input Macrocells
Enable Out
Output Macrocells AB
Output Macrocells BC
Mask Macrocells AB
Mask Macrocells BC
Main Flash Sector
Protection
Security Bit and
Secondary Flash
Sector Protection
JTAG Enable
PMMR0
PMMR2
Page
Register Name
Port B
0B
0D
01
05
07
09
Port C
10
12
14
16
18
1A
Port D
1B
11
13
15
17
Other
C0
C2
C7
B0
B4
E0
20
21
22
23
MCUI/O input mode. Read to obtain current logic level of
Port pins. No writes.
MCU I/O output mode. Write to set logic level on Port
pins. Read to check status.
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.
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.
Read to obtain state of IMCs. No writes.
Read to obtain the status of the output enable logic on
each I/O Port driver. No writes.
Read to get logic state of output of OMC bank AB.
Write to load registers of OMC bank AB.
Read to get logic state of output of OMC bank BC.
Write to load registers of OMC bank BC.
Write to set mask for loading OMCs in bank AB. A logic
1 in a bit position will block reads/writes of the
corresponding OMC. A logic 0 will pass OMC value.
Read to check status.
Write to set mask for loading OMCs in bank BC. A logic
1 in a bit position will block reads/writes of the
corresponding OMC. A logic 0 will pass OMC value.
Read to check status.
Read to determine Main Flash Sector Protection
Setting. No writes.
Read to determine if DSM devices Security Bit is active.
Logic 1 = device secured.
Also read to determine Secondary Flash Protection
Setting status. No Writes.
Write to enable JTAG Pins (optional feature). Read to
check status.
Power Management Register 0. Write and read.
Power Management Register 2. Write and read.
Memory Page Register. Write and read.
its
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.
IOMS
strobe. These registers are accesses in
Description
DSM2190F4
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