Datasheet

ULPI
DATA0:UART_TX
DATA1:UART_RX
DATA2:UART_RTS
DATA3:UART_CTS
Device
MCPC
connector
DP/RXD/MIC_R
DM/TXD/SPKR_L
RTSO
CTSI
032-050
TPS65950
SWCS032E–OCTOBER 2008–REVISED JANUARY 2011 www.ti.com
7.2.1 MCPC Carkit Port Timing
MCPC UART specification:
• 11-pin MCPC ARIB-USBI analog carkit interface
• Integrated 50 RRTSO resistor
• UART signaling (from 600 bps to 460.8 kbps)
• Audio (mono/stereo) signaling: In this mode, the ULPI data bus is redefined as a 4-pin UART interface,
which exchanges data through a direct access to the FS/LS analog transmitter and receiver.
The UART data are sent and received on the USB D+/D– pads, and the handshake signals are sent and
received on the RTSO/CTSI pads.
Figure 7-3 shows the MCPC UART and handshake mode data flow.
Figure 7-3. MCPC UART and Handshake Mode Data Flow
Table 7-1 lists the McPC UART and handshake mode timings.
Table 7-1. MCPC UART and Handshake Mode Timings
Notation Parameter Min Max Unit
CK5 t
d(UART_TXH-DM)
Delay time, UART_TX rising edge to DM transition 10 37 ns
CK6 t
d(UART_TXL-DM)
Delay time, UART_TX falling edge to DM transition 2.5 13 ns
CK7 t
d(DPH-UART_RX)
Delay time, DP rising edge to UART_RX transition 17 40 ns
CK8 t
d(DPL-UART_RX)
Delay time, DP falling edge to UART_RX transition 26 50 ns
CK9 t
d(UART_CTSH-RTSO)
Delay time, UART_CTS rising edge to RTSO transition 1 18 ns
CK10 t
d(UART_CTSL-RTSO)
Delay time, UART_CTS falling edge to RTSO transition 1 18 ns
CK11 t
d(CTSIH-UART_RTS)
Delay time, CTSI rising edge to UART_RTS transition 3 16 ns
CK12 t
d(CTSIL-UART_RTS)
Delay time, CTSI falling edge to UART_RTS transition 3 16 ns
102 USB HS 2.0 OTG Transceiver Copyright © 2008–2011, Texas Instruments Incorporated
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