DS3112+W Maxim Integrated Products, DS3112+W Datasheet - Page 19

IC MUX T3/E3 3.3V 256-PBGA

DS3112+W

Manufacturer Part Number
DS3112+W
Description
IC MUX T3/E3 3.3V 256-PBGA
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of DS3112+W

Controller Type
Framer, Multiplexer
Interface
Parallel/Serial
Voltage - Supply
3.135 V ~ 3.465 V
Current - Supply
150mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
256-PBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
2.2 CPU Bus Signal Description
Signal Name:
Signal Description:
Signal Type:
This signal should be tied low when the device is to be operated as a 16-bit bus. This signal should be tied
high when the device is to be operated as an 8-bit bus.
Signal Name:
Signal Description:
Signal Type:
The signal determines whether the CPU Bus will operate in the Intel Mode (CIM = 0) or the Motorola
Mode (CIM = 1). The signal names in parentheses are operational when the device is in the Motorola
Mode.
Signal Name:
Signal Description:
Signal Type:
The external host will configure the device and obtain real-time status information about the device via
these signals. When reading data from the CPU Bus, these signals will be outputs. When writing data to
the CPU Bus, these signals will become inputs. When the CPU bus is operated in the 8-bit mode
(CMS = 1), CD8 to CD15 are inactive and should be tied low.
Signal Name:
Signal Description:
Signal Type:
These input signals determine which internal device configuration register that the external host wishes to
access. When the CPU bus is operated in the 16-bit mode (CMS = 0), CA0 is inactive and should be tied
low. When the CPU bus is operated in the 8-bit mode (CMS = 1), CA0 is the least significant address bit.
Signal Name:
Signal Description:
Signal Type:
In Intel Mode (CIM = 0), this signal will determine when data is to be written to the device. In Motorola
Mode (CIM = 1), this signal will be used to determine whether a read or write is to occur.
Signal Name:
Signal Description:
Signal Type:
In Intel Mode (CIM = 0) this signal will determine when data is to be read from the device. In Motorola
Mode (CIM = 1), a rising edge will be used to write data into the device.
0 = CPU Bus is in the 16-Bit Mode
1 = CPU Bus is in the 8-Bit Mode
0 = CPU Bus is in the Intel Mode
1 = CPU Bus is in the Motorola Mode
CMS
CPU Bus Mode Select
Input
CIM
CPU Bus Intel/Motorola Bus Select
Input
CD0 to CD15
CPU Bus Data Bus
Input/Output (Tri-State Capable)
CA0 to CA7
CPU Bus Address Bus
Input
CWR (CR/W)
CPU Bus Write Enable (CPU Bus Read/Write Select)
Input
CRD (CDS)
CPU Bus Read Enable (CPU Bus Data Strobe)
Input
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DS3112

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