TCM4400 Datasheet, PDF (57/72 Pages) Texas Instruments – GSM/DCS BASEBAND AND VOICE A/D AND D/A RF INTERFACE CIRCUIT

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _RESERVD
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _R
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₀
Table 4–11. Uplink Q DAC Register
BULQDAC: BASEBAND UPLINK Q DAC REGISTER
ADDRESS: 5 R/W
ULD- ULQ- ULQ- ULQ- ULQ- ULQ- ULQ- ULQ-
RESERVD DAC DAC DAC DAC DAC DAC DAC DAC 0 0 1 0 1 1/0
7
6
5
4
3
2
1
0
R
R/W R/W R/W R/W R/W R/W R/W R/W ←ACCESS TYPE
0
0
0
0
0
0
0
0
0
←VALUE AT RESET
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{ULQDAC0 to ULQDAC7: Data applies to D/A converter of I channel.}
RESERVD:
Bits are reserved for testing purposes.
R/W:
A 1 indicates a read operation; a 0 indicates a write operation.
4.10.11 Power-Down Register 2
The values in each bit position of power-down register 2 are defined in Table 4–12.
Table 4–12. PWDNRG2 Register
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{PWDNRG2: REGISTER FOR POWERING DOWN}
ADDRESS: 8 R/W
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ RESERVD RESERVD TIM TIM BBS BBS VGA CHG VREF VREF 0 1 0 0 0 1/0
GPN GPD IPN IPD PPN UP PN PD
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{R = 0}
R = 0 R/W R/W R/W R/W R/W R/W R/W R/W
←ACCESS TYPE
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ₀
0
0
0
0
0
0
0
0
0
←VALUE AT RESET
VREFPN:
If this bit is cleared to 0, the internal reference voltage is powered down under the
control of terminal PWRDN and bit VREFPD. If bit VREFPN is set to 1, the power
down is controlled only by bit VREFPD.
VREFPD: This bit is functionally associated with bit VREFPN.
VGAPPN:
If this bit is cleared to 0, the internal reference VGAP is powered down under the
control of terminal PWRDN. If this bit is set to 1, the VGAP is not placed in
power-down mode.
TIMGPN:
If this bit is cleared to 0, the timing interface is powered down under the control
of terminal PWRDN. If this bit is set to 1, the power down is controlled only by
bit TIMPGD.
TIMGPD: This bit is functionally associated with bit TIMGPN.
BBSIPN:
If this bit is cleared to 0, the baseband serial interface is powered down under the
control of terminal PWRDN. If this bit is set to 1, the power down is controlled only
by bit BBSIPD.
BBSIPD:
This bit is functionally associated with bit BBSIPN. When this bit is set to 1, the
baseband serial interface is in power-down mode.
CHGUP:
This bit is used for testing purposes to accelerate the band gap settling time.
RESRVD: Bits are reserved for testing purpose.
4–21