TMC2074-NU SMSC, TMC2074-NU Datasheet - Page 82

• Manufacturer Part Number: TMC2074-NU
• Description: IC CTRL CIRC 128VTQFP PERIPH MOD
• Manufacturer: SMSC
• Series: CircLink™r

Specifications of TMC2074-NU

• Controller Type: I/O Controller
• Interface: Transceiver
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 40mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1024

NOTE:
Revision 0.2 (10-23-08)
*1 Not equivalent to the ARCNET original specifications. (Reduction function )
*2 Not equivalent to the ARCNET original specifications. (Change initial value)
*3 Not equivalent to the ARCNET original specifications. (Addition of new function)
- When reading/writing: ARCNET Setup2 Register
FARB (bit 6)
Increases the speed of the RAM Access controller. In default setting, it sets the yes/no setting of temporary
relay reception of 128 byte/page during CKP=000 setting. For further details, please refer to section 2.9.1 -
Temporary Receive and Direct Receive.
0: 128-byte/page temporary relay reception denied (Default),
1: 128-byte/page temporary relay reception allowed
The FARB bit switch must be operated during Software Reset.
RCNTM1, RCNTM0 (bits 1 and 0)
These bits set the timeout time of the reconfiguration timer. The following timeout times are applicable
when the transfer rate is 2.5 Mbps. (The values become half at 5 Mbps)
RCNTM1-0
00
01
10
11
The timeout times above are values for COMR6: Reconfiguration register’s ET1 and ET2 = 1,1
respectively. If ET1 and ET2 are other than the above value, the timeout time is doubled. (This includes
the case of ET1 pin=Low.) Refer to section 2.14.2 ET1 pin and 3.2.7 ET1, ET2 bit for details.
*1
*3
*1
*1
*1
*2
COMR7-0100
[READ/WRITE]
RAM Access controller input clock has a single-sided function.
RAM Access controller input clock has a double-sided function. Accordingly, the input clock must
be below 20 MHz.
: Timeout = 840 mS
: Timeout = 210 mS
: Timeout = 105 mS
: Timeout = 52 mS (Default)
15-8
5,4
1-0
bit
7
6
3
2
(Setup2 Register)
Name
--------
--------
FARB
--------
--------
--------
RCNTM1-0
DATASHEET
init. value
0,0
1,1
0
0
0
1
1
Page 82
description
reserved (all "0")
reserved ("0")
reserved ("0")
reserved (all "0")
reserved ("0")
reserved ("0")
Reconfiguration (RECON) Timer 1,0
Dual Mode CircLink™ Controller
SUBAD=0100
address:0Eh
SMSC TMC2074
Datasheet