CO2144/48LI-3 Connect One, CO2144/48LI-3 Datasheet - Page 36

• Manufacturer Part Number: CO2144/48LI-3
• Description: Ethernet ICs CO2144 LFBGA FORM FACTOR
• Manufacturer: Connect One

Specifications of CO2144/48LI-3

• Ethernet Connection Type: 10/100 BaseT LAN
• Maximum Power Dissipation: 200 mW
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Product: Ethernet Controllers
• Standard Supported: 802.11b/g
• Data Rate: 2.4 Kbps to 3 Mbps
• Supply Voltage (max): 3.3 V
• Supply Voltage (min): 1.2 V
• Maximum Operating Temperature: + 85 C
• Package / Case: LQFP-144
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Connect One
5.2.9 Serial Connection to Analog Modem
iChip supports a full-duplex, TTL-level serial communications link with a modem device. Full
EIA-232-D hardware flow control, including Tx, Rx, CTS, RTS, DTR, DSR, CD and RI lines, is
supported.
5.2.10
Hardware flow control is supported between the host serial connection and iChip. Flow
control is programmed via the AT+iFLW command. The default flow control method is set to
―wait/continue‖ software flow control (which is similar to XON/XOFF software flow control)
between iChip and the host processor.
The hardware flow control method frees the host CPU from monitoring and handling the
software flow control. The host can program iChip to either use hardware flow control or
―wait/continue‖ software flow control. The flow control mechanism is based on the RTS/CTS
signals.
Hardware flow control is supported on iChip‘s serial and parallel (HPI) connections. The host
parallel connection has built-in hardware flow control signals as part of the interface logic.
iChip CO2064/CO2128/CO2144 Data Sheet
64-pin
32
29
37
38
35
31
30
36
128-pin
66
63
71
72
69
65
64
70
Hardware and Software Flow Control
144-pin
K10
L10
M12
L12
L11
M11
M10
K11
Table 5-4: Serial Modem Interface
Pin name
TXD1
RXD1
nCTS1
nRTS1
nDSR1
nDCD1
nDTR1
nRI1
Functional Description
Function
USART1 transmit data
USART1 receive data
USART1 clear to send
USART1 request to
send
USART1 data set ready
USART1 data carrier
detect
USART1 data terminal
ready
USART1 ring indicator
5-7